Re: [off-topic] CS/IT/SE/CE/IS and analogies to other sciences (was: Re: 7.2 update instructions)

[William Shu]

Thanks Lamar.
William.


On Tuesday, February 23, 2016 3:51 PM, Lamar Owen  wrote:
 

 On 02/23/2016 03:29 AM, Yasha Karant wrote:
> Apologies, but I do not understand the "+1"; is this approval to post 
> additional commentary on this matter, or, again, is this discussion 
> not suitable for this list?  I did not initiate the matter of the ACM 
> view or curricular recommendations, in contrast to that of an 
> information technology approach; but there seem to be fundamental 
> misconceptions concerning the fields of computer science and 
> engineering in the commentary, just as I have met some "applied" 
> physicists who have misconceptions about fundamental physics...

Once again, the primary purpose of my bringing up the ACM curricula was 
simply to use an academically accepted source of definitions to 
establish common terminology, and to relate that even though many on 
this list are in various theoretical sciences they are not necessarily 
'computer scientists' by the ACM's definition of same. Many are in 
scientific institutions (such as my own) who deal with computers used by 
various theoretical/basic research scientists, but who are themselves 
'information technologists,' again by the ACM's definition of same.  I 
am not an astrophysicist; nor am I any one of the various subcategories 
of astronomer (astronomy embodies astrometry, photometry, spectroscopy, 
cosmology, and many other subfields); but I do support research 
astronomers as my $day_job (to use an IT-ism).  I do have an engineering 
degree, incidentally, but that is not my main job for the most part.

My observation was that you are not likely to get a 'computer scientist' 
mindset in answers to systems administration questions (squarely in the 
'information technologist' realm), but you are very likely to get an 
'information technologist' answer instead.  The details of the 
differences are easily found in the ACM's own curricula standards; for 
the list, those may be found at 
http://www.acm.org/education/curricula-recommendations

It boils down to a difference in terminology.  A good example is the 
'+1' used to signify 'I agree with that' that you found alien, but those 
who have been in IT for a long time understood as a part of the tacit 
knowledge in the IT discipline.  The use of '+1' on mailing lists and 
Usenet prior to that is pretty common.  Degree of agreement is expressed 
by a larger number; +1000 would be 'vehemently agree,' for instance.

I would personally be interested in your commentary, and I already know 
that there are others who would be as well, but it is probably not 
appropriate for the list.  So, please send me (and whomever may request 
it directly from you) and if it is ok with you I'll forward along to 
those who have contacted me privately with an interest in reading that 
commentary as well.

>
> For Lamar, who evidently has looked at my not-recently-updated 
> academic home page, the item you mention is posted there from another 
> source (I do not have any graphics artists to support my work, and do 
> not have the spare time to do the stick figure material you see) that 
> I thought was credited.
Yes, I saw the actual author (after following a link in the text of the 
document to grab the example source code) after I made the post, and I 
apologize for the improper attribution.

Hope you have a great day.


  

Re: 7.2 update instructions

[William Shu]

Sorry for the misunderstanding.
I simply meant the following:* I will appreciate a copy of your response on the 
differences between computer science, technology, etc, be it off-list or 
on-list (if moderators approve).* I'll appreciate Lamar's too, and the outcome 
from his University (if available).
Just to provide context, I'm from computer science (CSC); I encounter very 
strange views of CSC, IT, ICT, etc. (e.g., CSC is of Engineering and has no 
place in general [secondary] education or that IT skills are sufficient for 
CSC); and typically feel I and the other party(ies) are from different planets.

William.





On Tuesday, February 23, 2016 9:29 AM, Yasha Karant <ykar...@csusb.edu> 
wrote:
 

  Apologies, but I do not understand the "+1"; is this approval to post 
additional commentary on this matter, or, again, is this discussion not 
suitable for this list?  I did not initiate the matter of the ACM view or 
curricular recommendations, in contrast to that of an information technology 
approach; but there seem to be fundamental misconceptions concerning the fields 
of computer science and engineering in the commentary, just as I have met some 
"applied" physicists who have misconceptions about fundamental physics (e.g., 
high energy physics and general relativity).  (I mention fundamental physics 
because that is the basic reason for the existence of both Fermilab and CERN -- 
at both institutions, EL is the operating environment to enable the research, 
rather than DEC VMS of a previous epoch.  Those in the EL community gain from 
this use.)
 
 For Lamar, who evidently has looked at my not-recently-updated academic home 
page, the item you mention is posted there from another source (I do not have 
any graphics artists to support my work, and do not have the spare time to do 
the stick figure material you see) that I thought was credited.  I use this 
introduction to AES (and cryptography in general), along with a Conan Doyle 
short story, as my part of the "dog and pony show" my department does on an 
annual basis to recruit high school students to come to our ABET accredited 
programs as undergraduate majors.  If a person cannot handle mathematics, 
including that behind encryption, then, regrettably, computer science and 
engineering probably is not a good fit (nor would physics be).  When I teach a 
course involving encryption, I cover it with greater depth than what you see in 
the cartoon -- but I still have the students read the cartoon to get some 
background before I teach the mathematics and then the cryptography.
 
 On 02/22/2016 11:29 AM, William Shu wrote:
  
 
 Yasha/Lamar + 1 for your views on these comparisons, and Lamar's university's 
conclusions (and justifications thereto) when done, on or off list. 
  William. 
  
  
  On Monday, February 22, 2016 6:54 PM, Lamar Owen <lo...@pari.edu> wrote:
  
 
 On 02/22/2016 11:50 AM, Yasha Karant wrote:
 
 
 > would it be appropriate for me to post a response?  The differences 
 > are deep and fundamental.
 >
 
 I can't answer that; a moderator would need to.  I would personally 
 welcome a direct e-mail with the explanation myself, as my .edu is 
 currently investigating 'CS' curricula (where 'CS' is the 
 Google/Microsoft version and not the ACM version of 'CS').
 
 And for the list, one of the more fascinating things you are likely to 
 ever read is Yasha Karant's 'A Stick Figure Guide to the Advanced 
 Encryption Standard (AES)' which is available at 
 http://www.csci.csusb.edu/ykarant/cryptography/aes-cartoon.pdf ; I 
 certainly found it interesting.
 
 My paragraph was simply there to let you know that there are probably 
 many more IT folk here than CS folk, and IT folk tend to have a very 
 hands-on and practical 'here's the standard way to do it' answer and an 
 eye towards maintainability, and all of that is just a part of the IT 
 mindset.  Neither is the more correct mindset; the mindsets are just 
 different.  A CIS-mindset is yet even more different, but that's not 
 nearly as well represented here, nor are the CE or SE mindsets, but the 
 IT mindset is very much predominant here.  As well, it was to serve to 
 let the list as a whole know that there are different mindsets out there 
 that are very different from the typical sysadmin IT-centric mindset. 
  
 
  
 

  

Re: 7.2 update instructions

[William Shu]

Yasha/Lamar + 1 for your views on these comparisons, and Lamar's university's 
conclusions (and justifications thereto) when done, on or off list.
William.


On Monday, February 22, 2016 6:54 PM, Lamar Owen  wrote:
 

 On 02/22/2016 11:50 AM, Yasha Karant wrote:


> would it be appropriate for me to post a response?  The differences 
> are deep and fundamental.
>

I can't answer that; a moderator would need to.  I would personally 
welcome a direct e-mail with the explanation myself, as my .edu is 
currently investigating 'CS' curricula (where 'CS' is the 
Google/Microsoft version and not the ACM version of 'CS').

And for the list, one of the more fascinating things you are likely to 
ever read is Yasha Karant's 'A Stick Figure Guide to the Advanced 
Encryption Standard (AES)' which is available at 
http://www.csci.csusb.edu/ykarant/cryptography/aes-cartoon.pdf ; I 
certainly found it interesting.

My paragraph was simply there to let you know that there are probably 
many more IT folk here than CS folk, and IT folk tend to have a very 
hands-on and practical 'here's the standard way to do it' answer and an 
eye towards maintainability, and all of that is just a part of the IT 
mindset.  Neither is the more correct mindset; the mindsets are just 
different.  A CIS-mindset is yet even more different, but that's not 
nearly as well represented here, nor are the CE or SE mindsets, but the 
IT mindset is very much predominant here.  As well, it was to serve to 
let the list as a whole know that there are different mindsets out there 
that are very different from the typical sysadmin IT-centric mindset.


  

Re: "Not using downloaded repomd.xml because it is older than what we have:"

[William Shu]

This may not be your issue, but I find such "minimal differences" in time, 
mostly less than a second, when I back-up or copy files to MS Windows-based 
machines, and later restore/copy them back again. The hardware is same, as its 
a dual-boot laptop.I discovered the time-stamps were truncated/rounded on the 
MS-Windows machines, making files suddenly newer or older than their exact copy.
Hope that helps.

William.


On Saturday, February 13, 2016 7:24 PM, Peter Boy 
 wrote:
 

 Hi all, 

since several months I  get constantly from anacreon:
> ——<
/etc/cron.daily/0yum-daily.cron:

Not using downloaded repomd.xml because it is older than what we have:
Current  : Thu Feb  4 16:13:26 2016
Downloaded: Thu Feb  4 16:13:25 2016
> ——<


The time difference is quite minimal. And a manual „yum update“ confirms that 
no updates are waiting.

Using my favourite search engine I found it might have be caused by an 
unresponsive of lazy  mirror. But I use the standard configuration, i.e. the 
mirror list just includes the three scientificlinux servers. Other entries 
refer old bugs long fixed.

I tried a yum clean  all but it didn’t fix it.

And all our other don’t show this issue, but the configuration is all the same, 
at least according to my knowledge.


Obviously, there is no harm done and it can be safely ignored. But it always 
pulls our issue alert button.

Anyone any hint how to fix it? 


Thanks
Peter 









—
Dr. Peter Boy
Universität Bremen
Mary-Sommerville-Str. 5
28359 Bremen
Germany

p...@zes.uni-bremen.de
www.zes.uni-bremen.de



Are you looking for a web content management system for scientific research 
organizations?
Have a look at http://www.scientificcms.org

  

Re: WG: Black Display Screen Problem Getting Paraview to work

[William Shu]

Thanks Chris and Andrew for the suggestions/directions.

I now notice fglrx-x11-drv-12.4-1.el6.elrepo.i686.rpm driver does not seem to 
detect the card. Will consider a proprietary driver I googled (e.g., 
amd-driver-installer-12-2-x86.x86_64.run) later, when I'm more stable to look 
at the issue. (Unfortunately, I am not in a position to investigate the display 
 behaviour.)

At the same time, I'm inclined to thinking we have a linux software driver 
problem, as I noticed the machine (fan) was quieter under its Windows 7 
partition. Also, the boot time seems faster, after I did the file system 
repairs under chroot *and* uninstalled the fglrx* driver.


Once again, thanks for the assistance.

William.





 From: Chris Schanzle schan...@nist.gov
To: William Shu ws...@yahoo.com 
Sent: Wednesday, November 21, 2012 1:27 AM
Subject: Re: WG: Black Display Screen Problem  Getting Paraview to work
 
Just an (offline) thought-booting off the cd means you were not using the ati 
kernel drivers, so I would look into that issue really hard when booting off 
the kernel on the disk.


On 11/20/2012 10:41 AM, William Shu wrote:
 Peter, Andrew,
 Thanks for the suggestions.

 Peter, the machine is an HP ProBook 4720s Laptop that I use as a sort of 
 mobile desktop, and I do not have access to its internals. Besides being 
 the only machine I can work on now, I cannot tinker with its hardware! I've 
 been using for about a year now with no problem. Could it be that something 
 has worn out power supply from the PCI bus? (I often charge my phone via the 
 usb slot.). If so, can one add (or redirect) power externally?

 Andrew, I tried another monitor--a CRT--at the time but it did not display 
 anything. Since I could not repeat the event, I could only surmise the 
 screen and/or the keyboard (to switch on multi-display) or the USB Hard 
 drive might have been compromised. (a fsck proved the USB HD drive clean!)

 How does one test the fan of the GPU? Sorry for dumb question. I noticed 
 lately that the fan of the machine goes on for much longer than in times 
 past. Looking back, could briefly using the machine in dusty work 
 environment sometime back have such an adverse effect? (Machine is supposed 
 to be a laptop!)

 Another issue I don't understand is why the same paraview program, run via 
 chroot under the livedvd (6.0), found the same display okay, but does not 
 find it okay when the system is booted directly!

 Regards,
 William.

    
 
--

     *From:* peter.stauff...@boehringer-ingelheim.com 
peter.stauff...@boehringer-ingelheim.com
     *To:* ws...@yahoo.com
     *Sent:* Tuesday, November 20, 2012 2:46 PM
     *Subject:* WG: Black Display Screen Problem  Getting Paraview to work

     Hi William,
     some high-end graphics cards (our Nvidia Quadro cards) need additional 
power, so a special power cable must be connected to the graphics card.
     With normal low resolution the graphics cards work fine without this 
cable, but with higher resolution the power from PCI bus ist no longer 
sufficient and we got a blank screen.
     Peter
     Dr. Peter Stauffert
     Boehringer Ingelheim Pharma GmbH  Co. KG

     *Von:*owner-scientific-linux-us...@listserv.fnal.gov 
[mailto:owner-scientific-linux-us...@listserv.fnal.gov] *Im Auftrag von 
*Andrew Z
     *Gesendet:* Dienstag, 20. November 2012 14:36
     *An:* William Shu
     *Cc:* SCIENTIFIC- LINUX- USERS@ FNAL. GOV
     *Betreff:* Re: Black Display Screen Problem  Getting Paraview to work
     William
     Check if fan on your gpu  actually works.
     Try another monitor.
     I had similar odd behavior a while ago.
     On Nov 20, 2012 4:45 AM, William Shu ws...@yahoo.com 
mailto:ws...@yahoo.com wrote:

     Dear All,

     I state the basic problem, then give further explanations below. Any 
help appreciated, especially as I'm just groping!

       My basic problems are:
     ---
     (1) to ascertain the cause of the black screen

Re: WiFi driver broken w/update

[William Shu]

Thanks Akemi, Phil, for all the assistance.However, still no success.

Regards,

William.





 From: Phil Perry p...@pendre.co.uk
To: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov 
SCIENTIFIC-LINUX-USERS@listserv.fnal.gov 
Sent: Wednesday, August 22, 2012 8:09 AM
Subject: Re: WiFi driver broken w/update
 
On 22/08/12 07:24, Akemi Yagi wrote:
 
 Sorry I meant this link:
 
 http://lists.elrepo.org/pipermail/elrepo/2012-August/001359.html
 
 But expect the updated version of kmod-compat-wireless to be out real
 soon now. :)
 
 Akemi
 

Just released:

http://lists.elrepo.org/pipermail/elrepo/2012-August/001390.html

For those not familiar with the compat-wireless project, they backport the 
wireless branch from the latest stable kernel.

They actually backport a few other bits and pieces too like a few ethernet 
drivers and some bluetooth bits, and they are in the process of renaming their 
project to compat-drivers to better reflect that it's not just wireless but 
I'm going off topic now :-)

Anyway, elrepo packages the compat-wireless project as a kmod for el6.3. The 
latest version is based on the stable 3.5.1 kernel so backports the complete 
wireless stack from that kernel. If your wireless device isn't natively 
supported on SL out of the box then this might be a quick and easy method to 
see if it's supported by the latest upstream kernel drivers.

If anyone has wireless issues on 6.3 and would like to test this then we'd 
really appreciate the feedback (preferably on the elrepo list).

Thanks.

Re: WiFi driver broken w/update

[William Shu]

Thank Akemi, and also for the suggestion to start a new thread on such matters.

REgards,

William.






 From: Akemi Yagi amy...@gmail.com
To: William Shu ws...@yahoo.com 
Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov 
SCIENTIFIC-LINUX-USERS@listserv.fnal.gov 
Sent: Wednesday, August 22, 2012 7:24 AM
Subject: Re: WiFi driver broken w/update
 
On Tue, Aug 21, 2012 at 4:56 PM, Akemi Yagi amy...@gmail.com wrote:
 On Tue, Aug 21, 2012 at 2:25 PM, William Shu ws...@yahoo.com wrote:

 $ lspci -nn | grep -i net
 44:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g
 LP-PHY [14e4:4727] (rev 01)

 Your wifi device is different, so it would have been better if you
 started a new thread.

 Broadcom BCM4313 [14e4:4727] has been problematic. I refer you to a
 recent conversation on the ELRepo mailing list that has dealt with
 getting this device working on EL 6.3.  It is a long thread entitled
 [elrepo] Broken kmod-compat-wireless package:

 http://lists.elrepo.org/pipermail/elrepo/2012-August/thread.html#1350

 You may want to jump to:

 http://lists.elrepo.org/pipermail/elrepo/2012-August/001375.html

Sorry I meant this link:

http://lists.elrepo.org/pipermail/elrepo/2012-August/001359.html

But expect the updated version of kmod-compat-wireless to be out real
soon now. :)

Akemi

Re: WiFi driver broken w/update

[William Shu]

Hi,

I also have a similar problem, but thought it was due my change of 
location/networks. Reinstalling as per link similar to this:

    http://elrepo.org/tiki/wl-kmodhighlight=broadcom
did not work!

My details:


$ lspci -nn | grep -i net
44:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g 
LP-PHY [14e4:4727] (rev 01)
45:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. 
RTL8111/8168B PCI Express Gigabit Ethernet controller [10ec:8168] (rev 03)
$ 


Thanks,

William.




 From: Akemi Yagi amy...@gmail.com
To: Scott Gates msga...@gmail.com 
Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov 
Sent: Tuesday, August 21, 2012 8:25 PM
Subject: Re: WiFi driver broken w/update
 
On Tue, Aug 21, 2012 at 12:15 PM, Scott Gates msga...@gmail.com wrote:
 The last kernel update appears to have broken my WiFi driver.  Wired
 networking still works.

 Anybody have a link to a working driver?

 SL 2.6.32-279.1.1.EL6.i686 won't connect to wifi, but
 prev versions like
 SL 2.6.32-2201.1.EL6.i686 works.

Well, we cannot help you unless you provide useful information about
your wifi device. :-)

Please post the output returned by:

lspci -nn | grep -i net

Akemi

Re: digital signatures for SHASUMS, where?

[William Shu]

Dear Horvath,
I suppose you mean values for Scientific Linux iso's? They are found in the 
relevant iso directories. For example:
        http://ftp1.scientificlinux.org/linux/scientific/6.1/i386/iso/SHA1SUM
        http://ftp1.scientificlinux.org/linux/scientific/6.1/x86_64/iso/SHA1SUM


William.





 From: Horvath Andras m...@log69.com
To: scientific-linux-us...@fnal.gov 
Sent: Tuesday, February 28, 2012 8:39 AM
Subject: digital signatures for SHASUMS, where?
 
Dear List,

Could anyone kindly tell me where I can find any digital signatures
that belong to the SHA1SUM or other hashes of the downloadable .iso
files (installer and live ISO)?

Since the ISO files have to be downloaded through an unencrypted FTP or
HTTP connection along with their hash files, both could easily be
manipulated and changed on the way to the user's machine.

What am I missing here?


Thanks!

Re: momentarily disabling synaptic touchpad

[William Shu]

Vladimir,
Thanks for the assistance. Just to give feedback on state of things now since, 
for now, I have to settle for a suboptimal solution -- option (C) below, 
toggling touchpad on/off using xinput -- so as to get on with other things. 
Ideally, getting synclient to work predictably (A) would enable me control 
other things, such as the sensitivity/pressure on the touchpad.



A) using synclient and syndaemon (partial success).

syndaemon works all the time, but synclient only works *sometimes*. However, 
I'm not sure what I did, as my activities (below) don't seem 
repeatable/reproducible. My guess is they are being controlled/overidden from 
two or more independent sources.

First, I reversed the order of lines in *.fdi file, though I'm not convinced 
that matters, to:

       merge key=input.x11_driver type=stringsynaptics/merge
       merge key=input.x11_options.SHMConfig type=stringtrue/merge

and then restarted the hal daemon.

Then, I went to system - preferences - mouse - touchpad and unchecked 
Disable touchpad when typing; Enable mouse clicks with touchpad was checked.


I tried the following to switch touchpad, and tapping (for clicks) on and off. 
They worked as expected: 

[wss@localhost synaptics]$  synclient  TapButton1=1  TapButton3=3 TapButton3=2
[wss@localhost synaptics]$ synclient TouchpadOff=1
[wss@localhost synaptics]$ synclient TouchpadOff=0
[wss@localhost synaptics]$  synclient  TapButton1=0  TapButton3=0 TapButton3=0
[wss@localhost synaptics]$ 
[wss@localhost synaptics]$  synclient  TapButton1=1  TapButton3=3 TapButton3=2
[wss@localhost synaptics]$ synclient TouchpadOff=0
[wss@localhost synaptics]$ synclient TouchpadOff=1


Assuming that gnome was interfering, I tried the exercise again, but could not 
get synclient to work!


I also noticed that the option SHMConfig may be deprecated, as this man page 
excerpt [from synaptics(4)] suggests:

  Option SHMConfig boolean
  Switch  on/off shared memory for run-time debugging. This option
  does not have an effect on run-time configuration anymore and is
  only useful for hardware event debugging.




B) gnome desktop manipulation (unsuccessful).
The script for gnome could not work. complained of not finding 
/desktop/gnome/ find could not trace it (rooted elsewhere) and so I 
abandon the approach.




C) toggling touchpad on/off using xinput (successful).
I've used the shellscript you proposed using xinput. It works well. I attached 
it to the key Alt-T using system - preferences - keyboard shortcuts.


Once more, thanks for the assistance.

Regards,

William.




From: Vladimir Mosgalin mosga...@vm10124.spb.edu
To: scientific-linux-us...@fnal.gov
Sent: Tuesday, September 20, 2011 10:03 PM
Subject: Re: momentarily disabling synaptic touchpad

Hi William Shu!

On 2011.09.20 at 13:24:20 -0700, William Shu wrote next:

 Vladimir,
 Thank you so much for the suggestion. I followed the instructions on the web 
 page. For a moment it seems it will not work, then the touchpad was actually 
 disabled, but I have no clue what I did. Then, of its own, the pad was 
 activated after a few hours. I have rebooted the system as well as give the 
 command as root but no success. The output of synclient is given below.o

Did you create .fdi file and enabled configuring with synclient in it?
Because otherwise only options from .fdi file are going to work, you
have to enable synclient run-time configuring with separate option.

 The other command you gave seems to have an error! Not clear if part of a 
 shell script, but the characters -- ,0,*) -- after the last  seem 
 redundant.:


 
  syndaemon -i 1 -d -K  xinput set-int-prop \SynPS/2 Synaptics 
 TouchPad\ \Synaptics Two-Finger Pressure\ 32 10 ,0,*)
 
 ignoring them and unquoting the 's removed the errors, but seemed to have no 
 effect!

Yes, sorry. quotes were unneeded. Here is alternate version of second
command, anyhow, to enable two-finger tap, if you need middle button on
touchpad

xinput --set-prop --type=int --format=32 SynPS/2 Synaptics TouchPad 
Synaptics Two-Finger Pressure 10  


First one (syndaemon command) disables touchpad *temporarily* when you
are typing only; that's merely one of the options, as most people just
don't want touchpad to interfere with typing. Value after -i is in
seconds for how long touchpad will stay disabled after keypress. Maybe
you saw effect of that when thinking that touchpad was disabled
permanently?

I believe both syndaemon and synclient will work only when run-time
configuration is enabled in .fdi (after which you might need to reboot
or restart hal, as you can't detach and re-attach touchpad).


If you want to disable touchpad permanently, you can also use xinput,
like
xinput --set-prop --type=int SynPS/2 Synaptics TouchPad  Device Enabled 8 0

By the way, if finding device by text string in xinput not working for
you, you can call xinput list to find device id of your

Re: momentarily disabling synaptic touchpad

[William Shu]

- Original Message -
 From: Vladimir Mosgalin mosga...@vm10124.spb.edu
 To: scientific-linux-us...@fnal.gov
 Cc: 
 Sent: Wednesday, September 21, 2011 1:35 PM
 Subject: Re: momentarily disabling synaptic touchpad
 
 Hi William Shu!
 
 On 2011.09.21 at 03:48:40 -0700, William Shu wrote next:
 
  A) using synclient and syndaemon (partial success).
 
  syndaemon works all the time, but synclient only works *sometimes*. 
 However, I'm not sure what I did, as my activities (below) don't seem 
 repeatable/reproducible. My guess is they are being controlled/overidden from 
 two or more independent sources.
 
  First, I reversed the order of lines in *.fdi file, though I'm not 
 convinced that matters, to:
 
         merge key=input.x11_driver 
 type=stringsynaptics/merge
         merge key=input.x11_options.SHMConfig 
 type=stringtrue/merge
 
 Did you try on, btw? I believe true might be deprecated.

Yes, it was On before I changed to true. it does not seem to matter though. 
I still get intermittent responses.

 
 Unfortunately, I can't assist you on gnome interfering issues.. these
 are hard to debug and deal with. Can give another idea, though - there
 is alternative way to turning touchpad off while typing with syndaemon -
 it's to make it ignore palm touch, the synclient setting for that is
 described here
 https://wiki.archlinux.org/index.php/Synaptics#Disable_Trackpad_while_Typing
 (sadly, most of this article contents is for Xorg 8 w/udev, so it won't
 work with SL6 which uses Xorg 7.4 w/hal)
 

I have just tried set PalmDetect=1, but no visible change (yet):

$ synclient PalmDetect=1

but I may just be in one of the non-responsive phase of the system!
 
 
  B) gnome desktop manipulation (unsuccessful).
  The script for gnome could not work. complained of not finding 
 /desktop/gnome/ find could not trace it (rooted elsewhere) and 
 so I abandon the approach.
 
 There won't be such file - it's gconf key (you can browse around with
 gconf-editor after installing corresponding package, for example).
 But if there is no such key, probably touchpad manipulation from isn't
 supported on SL6.. (this key exists on Fedora system, for example).

it seems the key needs a physical directory somewhere, even if it is not
literally stored there as a file or subdirectory, as the following shows:

I've traced the directory root to be ~/.gconf, viz:
  /home/wss/.gconf/desktop/gnome/peripherals/touchpad/
but meet handicap that gconftool-2 --set ... does not want subdirectories
starting with a period (e.g., .gconf), and the file touchpad_enabled
does NOT exist in it (since it's a key?).

having a soft link via:

$ ln -s /home/wss/.gconf tmpgconf

solved the first problem. Repeated running of the script made the second
problem go away. The transcript follows (script in file gnome-touchpadtoggle):

[wss@localhost synaptics]$ ./gnome-touchpadtoggle
Failed to get value for 
`/home/wss/.gconf/desktop/gnome/peripherals/touchpad/touchpad_enabled': Bad key 
or directory name: 
/home/wss/.gconf/desktop/gnome/peripherals/touchpad/touchpad_enabled: Can't 
have a period '.' right after a slash '/'
Error setting value: Bad key or directory name: 
/home/wss/.gconf/desktop/gnome/peripherals/touchpad/touchpad_enabled: Can't 
have a period '.' right after a slash '/'
[wss@localhost synaptics]$ 
[wss@localhost synaptics]$ ./gnome-touchpadtoggle
No value set for 
`/home/wss/tmpgconf/desktop/gnome/peripherals/touchpad/touchpad_enabled'$(gconftool-2
 --get /desktop/gnome/peripherals/touchpad/touchpad_enabled)
[wss@localhost synaptics]$ $(gconftool-2 --get 
/desktop/gnome/peripherals/touchpad/touchpad_enabled)
[wss@localhost synaptics]$ $(gconftool-2 --get 
/desktop/gnome/peripherals/touchpad/touchpad_enabled)
[wss@localhost synaptics]$ echo  $(gconftool-2 --get 
/desktop/gnome/peripherals/touchpad/touchpad_enabled)
true
[wss@localhost synaptics]$ gconftool-2 --set 
/desktop/gnome/peripherals/touchpad/touchpad_enabled --type boolean false
[wss@localhost synaptics]$ echo  $(gconftool-2 --get 
/desktop/gnome/peripherals/touchpad/touchpad_enabled)
false
[wss@localhost synaptics]$ ./gnome-touchpadtoggle
[wss@localhost synaptics]$ ./gnome-touchpadtoggle

 
 
  Once more, thanks for the assistance.
 
 No problem, I'm glad at least some solution worked :)
 
 
 -- 
 
 Vladimir

Re: momentarily disabling synaptic touchpad

[William Shu]

Hi Todd,
Thanks for the hint with awk.

I also finally figured out why sed was not working: besides confusion with the 
specific types of regular expression to use, the erratic touchpad made me miss 
an escape (\) character just before the + sign. Thus, one should have had:
    ... |sed -ne 's/.*id=\([0-9]\+\).*/\1/p'`

Regards,

William.





From: Todd And Margo Chester toddandma...@gmail.com
To: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Sent: Wednesday, September 21, 2011 7:31 PM
Subject: Re: momentarily disabling synaptic touchpad


On 09/20/2011 01:47 PM, William Shu wrote: 
Thanks Todd,
The script works when I manually give the value for $DeviceID. There are some 
trailing characters beyond the device ID that make the system to complain. 
The external mouse can't seem to handle click/select and copy (I think the 
mouse has probs, and I'm still to get another model and use.)



my awk is too rusty to figure how to output only the number after id=. Trying 
to use sed as in, e.g.,


$   echo -n dkdksl id=13 dkdsl |  sed -ne 's/.*id=\([0-9]+\).*/\1/p'


does not extract the id (13, here). (I hope I'm not slowly messing up the 
system!)]
Hi William,

SED is a nightmare at times.  Do two AWKs.  I drop the echo -n
in the example.

$ echo dkdksl id=13 dkdsl | awk -F id= '{print $2}' | awk
'{print $1}'

13


-T




While I would like to see your version work, the solution proposed by 
Vladimir would meet my needs better when it works!


William.





From: Todd And Margo Chester toddandma...@gmail.com
To: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Sent: Tuesday, September 20, 2011 2:55 AM
Subject: Re: momentarily disabling synaptic touchpad


On 09/19/2011 04:28 PM, William Shu wrote: 
Hi,
I have SL 6.0 installed on a Seagate FreeAgent GoFlex USB drive, which I use 
on various laptops (and desktops). The touchpad is so sensitive on some 
machines and I would like to disable it. At the same time, the attached 
mouse seems to be selectively responsive, notably its left button. Looking 
through the docs etc, a synaptics input driver has been installed, but the 
corresponding xorg.conf file is not in place for me to modify. (From a 
separate thread on nVidia, creating this file is NOT automatic in SL 6.)
 

Hi William,

This is probably not exactly what you wanted.  But,
  anyway...

I have a sweet little old lady (70+) on FC15 that the
  slide pad drives
her crazy.  She is constantly putting her had down on it
  when she types.
She prefers to use her USB attached mouse.  So I wrote the
  following
script for her.  I don't remember where I put it though. 
  Maybe her
rc.local.

HTH,
-T

#!/bin/bash
#Disable the [annoying] Slide Pad mouse

#DeviceStr=`xinput list | grep -i touchpad | awk '{print
  $6}'`
#DeviceID=`echo $DeviceStr | sed -e 's/id=//'`

DeviceID=`xinput list | grep -i touchpad | awk -F id=
  '{print $2}'`
if [ -z $DeviceID ]; then
   echo DeviceID failed to resolve.  There is something
  wrong.
   echo Cowardly exiting.  Bummer, dude ...
   echo 
   exit 1
fi

xinput set-prop $DeviceID Device Enabled 0
echo touchpad mouse on device id $DeviceID has been
  disabled
echo 

Re: momentarily disabling synaptic touchpad

[William Shu]

    PalmDetect  = 0
    PalmMinWidth    = 10
    PalmMinZ    = 199
    CoastingSpeed   = 0
    PressureMotionMinZ  = 29
    PressureMotionMaxZ  = 159
    PressureMotionMinFactor = 1
    PressureMotionMaxFactor = 1
    GrabEventDevice = 1
    TapAndDragGesture   = 1
    AreaLeftEdge    = 0
    AreaRightEdge   = 0
    AreaTopEdge = 0
    AreaBottomEdge  = 0
[wss@localhost ~]$ 






From: Vladimir Mosgalin mosga...@vm10124.spb.edu
To: scientific-linux-us...@fnal.gov
Sent: Tuesday, September 20, 2011 1:16 AM
Subject: Re: momentarily disabling synaptic touchpad

Hi William Shu!

On 2011.09.19 at 16:28:32 -0700, William Shu wrote next:

 I have SL 6.0 installed on a Seagate FreeAgent GoFlex USB drive, which
 I use on various laptops (and desktops). The touchpad is so sensitive
 on some machines and I would like to disable it. At the same time, the
 attached mouse seems to be selectively responsive, notably its left
 button. Looking through the docs etc,a synaptics input driver has been
 installed, but the corresponding xorg.conf file is not in place for me
 to modify. (From a separate thread on nVidia, creating this file is
 NOT automatic in SL 6.)  
 
 Question 1: If I create the xorg.conf file, would that later create
 problems for me when I switch to other machines--legacy or recent? I
 would not want some of the clashes (no/incorrect video, etc.) I
 experienced with SL 52 on USB sticks.

It will create problems if you switch configuration if you create
full-fledged xorg.conf; for example video card ID on PCI bus creates
problem, and video card driver. However good thing is, you don't have to
create xorg.conf; modern xorg supports small snippets of config files in
which you can tweak only some part of config, and letting everything
else to be autoconfigured. Sadly, this doesn't work for some stuff like
video (if you have to set gamma, you have to put all sections like video
card - display - etc), but it works perfectly for input devices.
So, it's best to be without xorg.conf at all, if your system can handle
it (if you install nvidia binary drivers, you probably must have that
file :( )


Here lies the trouble, however, as SL6 uses Xorg 7.4 which doesn't
support udev-based configuration (it appeared in Xorg 8 and higher)
or config snippets from /etc/X11/xorg.conf.d; it uses older method of
hal-based configuration with config snippets from .fdi files. Check out
this page, here you can find exact solution which should work in SL6.0:
http://en.gentoo-wiki.com/wiki/Synaptics_Touchpad/Xorg_7.3

(of course, skip kernel  X11 compiling part :)


So, just create .fdi and customize it with options from manpage to your
liking, you can enable synclient real-time configuration, too. You won't
have to touch anything else or xorg.conf and this file won't interfere
with systems that don't have touchpads at all. This should answer your
second question, too.

 Question 3: Can the touchpad sometimes interfere with the use of the
 mouse? If so, how to minimize interference. the [replacement] mouse I
 use may not be the right quality?

Seems unlikely, I'd suspect faulty mouse, but can never be sure.. Still,
never heard or experienced any kind of interference between mouse,
touchpad and touchscreen - they all seem to work in any combination.


-- 

Vladimir

Re: momentarily disabling synaptic touchpad

[William Shu]

Thanks Todd,
The script works when I manually give the value for $DeviceID. There are some 
trailing characters beyond the device ID that make the system to complain. The 
external mouse can't seem to handle click/select and copy (I think the mouse 
has probs, and I'm still to get another model and use.)


my awk is too rusty to figure how to output only the number after id=. Trying 
to use sed as in, e.g.,

$   echo -n dkdksl id=13 dkdsl |  sed -ne 's/.*id=\([0-9]+\).*/\1/p'

does not extract the id (13, here). (I hope I'm not slowly messing up the 
system!)


While I would like to see your version work, the solution proposed by Vladimir 
would meet my needs better when it works!

William.




From: Todd And Margo Chester toddandma...@gmail.com
To: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Sent: Tuesday, September 20, 2011 2:55 AM
Subject: Re: momentarily disabling synaptic touchpad


On 09/19/2011 04:28 PM, William Shu wrote: 
Hi,
I have SL 6.0 installed on a Seagate FreeAgent GoFlex USB drive, which I use 
on various laptops (and desktops). The touchpad is so sensitive on some 
machines and I would like to disable it. At the same time, the attached mouse 
seems to be selectively responsive, notably its left button. Looking through 
the docs etc, a synaptics input driver has been installed, but the 
corresponding xorg.conf file is not in place for me to modify. (From a 
separate thread on nVidia, creating this file is NOT automatic in SL 6.)
 

Hi William,

This is probably not exactly what you wanted.  But, anyway...

I have a sweet little old lady (70+) on FC15 that the slide pad
drives
her crazy.  She is constantly putting her had down on it when she
types.
She prefers to use her USB attached mouse.  So I wrote the following
script for her.  I don't remember where I put it though.  Maybe her
rc.local.

HTH,
-T

#!/bin/bash
#Disable the [annoying] Slide Pad mouse

#DeviceStr=`xinput list | grep -i touchpad | awk '{print $6}'`
#DeviceID=`echo $DeviceStr | sed -e 's/id=//'`

DeviceID=`xinput list | grep -i touchpad | awk -F id= '{print
$2}'`
if [ -z $DeviceID ]; then
   echo DeviceID failed to resolve.  There is something wrong.
   echo Cowardly exiting.  Bummer, dude ...
   echo 
   exit 1
fi

xinput set-prop $DeviceID Device Enabled 0
echo touchpad mouse on device id $DeviceID has been disabled
echo 

Re: momentarily disabling synaptic touchpad

[William Shu]

Yes, I did create the fdi file, see below. (I also copied the file from 
/usr/share/hal/policy/99-synaptics.fdi  to 
/usr/share/hal/policy/20thirdparty/99-ssynaptics.fdi and renamed originals to 
*.save)


Your inititial solution seems the best .

Dumb question: how is it enabled for synclient?




William.

---[ file: /usr/share/hal/policy/20thirdparty/99-synaptics.fdi ]---

?xml version=1.0 encoding=ISO-8859-1?

!-- DO NOT EDIT THIS FILE IN PLACE.
 This file will be overwritten with the next update. If you need to add
 custom options, copy the file into /etc/hal/fdi/policy/ first. 

 MODIFIED FILE:
    Added the *SHMConfig* line, for shared memory, so that touchpad
    properties can be tweaked (in real-time) using synclient OR
    syndaemon used to disable touchpad on keyboard activity.


 See https://fedoraproject.org/wiki/Input_device_configuration --

deviceinfo version=0.2
  device
    match key=info.capabilities contains=input.touchpad
    !-- To add custom options for the touchpad, modify the examples below
 to suit your needs. The available options are listed in the
 synaptics man page. After modifyfing this file, you must
 restart HAL. Check the output of lshal whether your modifications
 have been merged successfully.

 Note: Options must always be type string.
 The following examples enable left, right, middle clicks on
 single, double, triple finger tapping, respectively.

 merge key=input.x11_options.TapButton1 type=string1/merge
 merge key=input.x11_options.TapButton2 type=string3/merge
 merge key=input.x11_options.TapButton3 type=string2/merge
    --
    merge key=input.x11_options.SHMConfig type=stringOn/merge
    merge key=input.x11_driver type=stringsynaptics/merge
    /match
  /device
/deviceinfo





From: Vladimir Mosgalin mosga...@vm10124.spb.edu
To: scientific-linux-us...@fnal.gov
Sent: Tuesday, September 20, 2011 10:03 PM
Subject: Re: momentarily disabling synaptic touchpad

Hi William Shu!

On 2011.09.20 at 13:24:20 -0700, William Shu wrote next:

 Vladimir,
 Thank you so much for the suggestion. I followed the instructions on the web 
 page. For a moment it seems it will not work, then the touchpad was actually 
 disabled, but I have no clue what I did. Then, of its own, the pad was 
 activated after a few hours. I have rebooted the system as well as give the 
 command as root but no success. The output of synclient is given below.o

Did you create .fdi file and enabled configuring with synclient in it?
Because otherwise only options from .fdi file are going to work, you
have to enable synclient run-time configuring with separate option.

 The other command you gave seems to have an error! Not clear if part of a 
 shell script, but the characters -- ,0,*) -- after the last  seem 
 redundant.:


 
  syndaemon -i 1 -d -K  xinput set-int-prop \SynPS/2 Synaptics 
 TouchPad\ \Synaptics Two-Finger Pressure\ 32 10 ,0,*)
 
 ignoring them and unquoting the 's removed the errors, but seemed to have no 
 effect!

Yes, sorry. quotes were unneeded. Here is alternate version of second
command, anyhow, to enable two-finger tap, if you need middle button on
touchpad

xinput --set-prop --type=int --format=32 SynPS/2 Synaptics TouchPad 
Synaptics Two-Finger Pressure 10  


First one (syndaemon command) disables touchpad *temporarily* when you
are typing only; that's merely one of the options, as most people just
don't want touchpad to interfere with typing. Value after -i is in
seconds for how long touchpad will stay disabled after keypress. Maybe
you saw effect of that when thinking that touchpad was disabled
permanently?

I believe both syndaemon and synclient will work only when run-time
configuration is enabled in .fdi (after which you might need to reboot
or restart hal, as you can't detach and re-attach touchpad).


If you want to disable touchpad permanently, you can also use xinput,
like
xinput --set-prop --type=int SynPS/2 Synaptics TouchPad  Device Enabled 8 0

By the way, if finding device by text string in xinput not working for
you, you can call xinput list to find device id of your touchpad and
then use it instead. 

In case you absolutely can't get synclient  syndaemon working for you,
just stick with xinput, they should work regardless of .fdi settings, I
believe. More examples of xinput are here
https://wiki.ubuntu.com/X/Config/Input


Here is automated script to turn touchpad on  off. Customize to your
liking and then bind its execution to some key. Script isn't mine, I'm
merely copypasting it:

#!/bin/sh
# get touchpad id
XINPUTNUM=`xinput list | grep 'SynPS/2 Synaptics TouchPad' | sed -n 
-e's/.*id=\([0-9]\+\).*/\1/p'`

# get the current state of the touchpad
TPSTATUS=`xinput list-props $XINPUTNUM | awk '/Device Enabled/ { print $NF }'`

# if getting the status failed, exit
test -z $TPSTATUS

Re: Farewell from Troy

[William Shu]

Congratulations Troy!

It feels like Scientific Linux has a major configuration shift triggered!  ;) 


Many thanks for all your assistance over the years.


All the best in your new job.

William.





From: Troy Dawson daw...@fnal.gov
To: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov; 
scientific-linux-de...@fnal.gov scientific-linux-de...@fnal.gov
Sent: Wednesday, August 24, 2011 7:40 PM
Subject: Farewell from Troy

Hi,
I have loved all the years that I have been a developer and architect for 
Scientific Linux, but it is time for me to move on.  I have accepted a job 
offer from Red Hat to work on their new openshift project.
( https://www.redhat.com/openshift/ )
My last day working for Fermilab, and on the Scientific Linux project will be 
September 2, 2011.

Thank you to everyone who has encouraged, thanked, and helped me over
the past 8 years that I have worked on Scientific Linux.  I have said it  
before, and I'll say it now, The Scientific Linux community is one of  the best 
communities there is.

Troy
-- __
Troy Dawson  daw...@fnal.gov  (630)840-6468
Fermilab  ComputingDivision/SCF/FEF/SLSMS Group
__

Re: Persistent Data in SL LiveDVD on USB

[William Shu]

Many Many thanks Urs,
Will surely follow your suggestions, once I have a window. I 
believe persistence will work smoothly now!
 
Regards,
 
William.

--- On Thu, 3/17/11, Urs Beyerle urs.beye...@env.ethz.ch wrote:


From: Urs Beyerle urs.beye...@env.ethz.ch
Subject: Re: Persistent Data in SL LiveDVD on USB
To: William Shu ws...@yahoo.com
Cc: scientific-linux-us...@fnal.gov
Date: Thursday, March 17, 2011, 11:38 PM


Hi William, 

You have definitely no overlay file with the name overlay--4C04-9372 in 
/LiveOS folder on your USB stick. So overlay will not work.

 [root@livecd sluser]# dir /overlayfs/LiveOS/
 home.img  osmin.img squashfs.img 

It's hard to say why this happened. However, it should be possible to create 
the overlay file just manually.
Change to the /LiveOS on your USB stick and run 

dd if=/dev/zero of=overlay--4C04-9372 count=1024 bs=1M 

This will create a 1024 MB file (/LiveOS/overlay--4C04-9372) filled with zeros. 

If you now boot your USB stick the file /LiveOS/overlay--4C04-9372 should be 
found and take to store the persistence changes.

Please note that the overlay file should not be used completely:
http://www.livecd.ethz.ch/usbdisk.html#limits

In worst case you can just remove it again and start with a new and empty one.

Cheers,

    Urs




On 03/17/2011 08:56 PM, William Shu wrote: 
Dear Urs,

What I obtained is below. Unfortunately, a bit mobile now, I have only the USB 
stick to work on SL6 and so cannot un-install it as such; but I had no 
complaints!

I recall when installing SL6 on the USB that I had warning about its label 
(made up of some control-character sequence, starting, I think, with ^17). 
Since installation was complete, and in prior attempts the label was changed, I 
did not think it was a problem. Now, I'm not so sure!

Regards,

William.

[sluser@livecd ~]$ su
[root@livecd sluser]# dir /LiveOS/overlay--4C04-9372
dir: cannot access /LiveOS/overlay--4C04-9372: No such file or directory
[root@livecd sluser]# dir /LiveOS/overlay--4C04-9372
[root@livecd sluser]# find / -iname *4C04-9372* -print
/dev/disk/by-uuid/4C04-9372
/dev/.udev/links/disk\x2fby-uuid\x2f4C04-9372
[root@livecd sluser]# mkdir /overlayfs
[root@livecd sluser]# mount -n -t auto UUID=4C04-9372 /overlayfs
[root@livecd sluser]# [ -f /overlayfs/LiveOS/overlay--4C04-9372 -a -w 
/overlayfs/LiveOS/overlay--4C04-9372 ]  echo ok
[root@livecd sluser]# dir /overlayfs/
boot/ EFI/  LiveOS/   syslinux/ 
[root@livecd sluser]# dir /overlayfs/LiveOS/
home.img  osmin.img squashfs.img  
[root@livecd sluser]# 

William

--- On Thu, 3/17/11, Urs Beyerle urs.beye...@env.ethz.ch wrote:


From: Urs Beyerle urs.beye...@env.ethz.ch
Subject: Re: Persistent Data in SL LiveDVD on USB
To: William Shu ws...@yahoo.com
Cc: scientific-linux-us...@fnal.gov
Date: Thursday, March 17, 2011, 10:00 AM
Hi William

On 03/17/2011 06:15 AM, William Shu wrote:

Thank you very much Urs.

Below are the requested outputs: (A) for losetup; and
(B) for dracut. It seems the overlay is not being found!


On a related matter, you say livecd-tools and
liveusb-creator are part of the live iso's, but I had to
yum install them before I could use them in making the
USB!



Thanks for the debug info.

You are right. liveusb-creator is not part of Live iso's.
But livecd-tools and therefore livecd-iso-to-disk should be

installed. However, doing yum update livecd-tools is
always a good idea.

Yes, the overlay is not found in your case:

dracut: + mkdir /overlayfs
dracut: + mount -n -t auto UUID=4C04-9372 /overlayfs
dracut: + [ -f /overlayfs/LiveOS/overlay--4C04-9372 -a -w
/overlayfs/LiveOS/overlay--4C04-9372 ]
dracut: + umount -l /overlayfs
dracut: + [ -z  ]
dracut: + [ -n UUID=4C04-9372 -a -n
/LiveOS/overlay--4C04-9372 ]
dracut: + warn Unable to find persistent overlay; using
temporary

Can you quickly check, if the overlay file is on your Live
USB drive and if it is writable (w)? In your case the
overlay 
file should be

/LiveOS/overlay--4C04-9372

You might want to reproduce the mounting of your USB stick
(as done be dracut) on a SL6 system. Plugin the stick. If it

gets auto-mounted, un-mount it. As root try

mkdir /overlayfs
mount -n -t auto UUID=4C04-9372 /overlayfs
[ -f /overlayfs/LiveOS/overlay--4C04-9372 -a -w
/overlayfs/LiveOS/overlay--4C04-9372 ]  echo ok


Cheers,

    Urs



  



  

Re: install the full SL6, SL5.5 OS's and GRUB on external USB hard drive

[William Shu]

Troy, Konstantin,
Thank you very much for your quick reply and valuable information.

As suggested, I hope to use extlinux for grub, and sl5.6 for sl5.5. However, 
I'm currently very mobile (for the next week or so) but will give feedback once 
I try out the suggestions.

Kind Regards,

William.

--- On Wed, 3/16/11, Konstantin Olchanski olcha...@triumf.ca wrote:

 From: Konstantin Olchanski olcha...@triumf.ca
 Subject: Re: install the full SL6, SL5.5 OS's and GRUB on external USB hard 
 drive
 To: Troy Dawson daw...@fnal.gov
 Cc: William Shu ws...@yahoo.com, scientific-linux-us...@fnal.gov 
 scientific-linux-us...@fnal.gov
 Date: Wednesday, March 16, 2011, 5:12 PM
 On Wed, Mar 16, 2011 at 09:45:13AM
 -0500, Troy Dawson wrote:
  I have a full distro on a USB stick.  It's
 currently Fedora 13 instead 
  of SL6, but the procedure is the exact same.
  
  Do a normal install with the USB hard drive plugged in
 and selected as 
  the main hard drive, and with all your partitions on
 it.  The only thing 
  you have to be careful of is where grub is put, and
 what order grub 
  thinks the drives are.
 
 
 In my experience, trying to USB-boot Linux using SL5 GRUB
 is futile. GRUB gets
 hopelessly confused by the ordering of BIOS hard drives -
 which seems to
 change between cold and warm reboots.
 
 BTW, on the machines where I looked into it, one cannot
 select USB hard drive
 as the main hard drive on a permanent basis - if you ever
 boot the machine
 with the USB drive accidentally unplugged or powered down,
 I see BIOS settings
 reverting back to whatever crazy random order you use and
 GRUB will fail
 to boot until you go back to the BIOS setup screen and
 change the settings.
 
 The best I can tell, the root of the problem is with GRUB
 insisting on booting
 from disk 0 (or whatever number is specified in grub.conf)
 instead of continuing
 to use the boot disk selected by the BIOS (as
 SYSLINUX/EXTLINUX seems to do).
 
 This strategy of booting from BIOS disk number selected in
 some config file
 may have worked well in the days of hardwired primary
 master IDE disks and
 mostly continues to function with hardwired SATA disks
 (i.e. fails on ASUS A8N-E mobos
 where ordering of SATA ports by BIOS and Linux is not the
 same), but completely
 makes no sense with dynamically assigned USB disks (if I
 have 2 USB disks, which
 one is disk 0? Yes, it is in the USB enumeration order, so
 it is deterinistic,
 but if I plug in a 3rd USB disk, USB enumeration order may
 change and GRUB will
 not boot).
 
 Anyhow, according to http://www.gnu.org/software/grub/ GRUB has
 been abandoned, so why are we still using it?!? In
 contrast, SYSLINUX/EXTLINUX/PXELINUX
 is still in active development. (Yes, there is GRUB-2, if
 you can find it, but SL5 is not
 using it).
 
 
 K.O.
 
 
 
 
 
  
  http://www.scientificlinux.org/distributions/6x/installing/boot.loader.configuration.html
  
  On SL6, be sure to select Change device and make
 sure your USB drive 
  is marked as the First BIOS drive.  Then make
 sure it's set to install 
  the boot loader on the MBR of our USB hard drive.
  http://www.scientificlinux.org/distributions/6x/installing/large/boot.loader.5.png
 
 
 
 -- 
 Konstantin Olchanski
 Data Acquisition Systems: The Bytes Must Flow!
 Email: olchansk-at-triumf-dot-ca
 Snail mail: 4004 Wesbrook Mall, TRIUMF, Vancouver, B.C.,
 V6T 2A3, Canada
 

Re: Persistent Data in SL LiveDVD on USB

[William Shu]

Dear Urs,

What I obtained is below. Unfortunately, a bit mobile now, I have only the USB 
stick to work on SL6 and so cannot un-install it as such; but I had no 
complaints!

I recall when installing SL6 on the USB that I had warning about its label 
(made up of some control-character sequence, starting, I think, with ^17). 
Since installation was complete, and in prior attempts the label was changed, I 
did not think it was a problem. Now, I'm not so sure!

Regards,

William.

[sluser@livecd ~]$ su
[root@livecd sluser]# dir /LiveOS/overlay--4C04-9372
dir: cannot access /LiveOS/overlay--4C04-9372: No such file or directory
[root@livecd sluser]# dir /LiveOS/overlay--4C04-9372
[root@livecd sluser]# find / -iname *4C04-9372* -print
/dev/disk/by-uuid/4C04-9372
/dev/.udev/links/disk\x2fby-uuid\x2f4C04-9372
[root@livecd sluser]# mkdir /overlayfs
[root@livecd sluser]# mount -n -t auto UUID=4C04-9372 /overlayfs
[root@livecd sluser]# [ -f /overlayfs/LiveOS/overlay--4C04-9372 -a -w 
/overlayfs/LiveOS/overlay--4C04-9372 ]  echo ok
[root@livecd sluser]# dir /overlayfs/
boot/ EFI/  LiveOS/   syslinux/ 
[root@livecd sluser]# dir /overlayfs/LiveOS/
home.img  osmin.img squashfs.img  
[root@livecd sluser]# 

William

--- On Thu, 3/17/11, Urs Beyerle urs.beye...@env.ethz.ch wrote:

 From: Urs Beyerle urs.beye...@env.ethz.ch
 Subject: Re: Persistent Data in SL LiveDVD on USB
 To: William Shu ws...@yahoo.com
 Cc: scientific-linux-us...@fnal.gov
 Date: Thursday, March 17, 2011, 10:00 AM
 Hi William
 
 On 03/17/2011 06:15 AM, William Shu wrote:
  Thank you very much Urs.
 
  Below are the requested outputs: (A) for losetup; and
 (B) for dracut. It seems the overlay is not being found!
 
  On a related matter, you say livecd-tools and
 liveusb-creator are part of the live iso's, but I had to
 yum install them before I could use them in making the
 USB!
 
 
 Thanks for the debug info.
 
 You are right. liveusb-creator is not part of Live iso's.
 But livecd-tools and therefore livecd-iso-to-disk should be
 
 installed. However, doing yum update livecd-tools is
 always a good idea.
 
 Yes, the overlay is not found in your case:
 
 dracut: + mkdir /overlayfs
 dracut: + mount -n -t auto UUID=4C04-9372 /overlayfs
 dracut: + [ -f /overlayfs/LiveOS/overlay--4C04-9372 -a -w
 /overlayfs/LiveOS/overlay--4C04-9372 ]
 dracut: + umount -l /overlayfs
 dracut: + [ -z  ]
 dracut: + [ -n UUID=4C04-9372 -a -n
 /LiveOS/overlay--4C04-9372 ]
 dracut: + warn Unable to find persistent overlay; using
 temporary
 
 Can you quickly check, if the overlay file is on your Live
 USB drive and if it is writable (w)? In your case the
 overlay 
 file should be
 
 /LiveOS/overlay--4C04-9372
 
 You might want to reproduce the mounting of your USB stick
 (as done be dracut) on a SL6 system. Plugin the stick. If it
 
 gets auto-mounted, un-mount it. As root try
 
 mkdir /overlayfs
 mount -n -t auto UUID=4C04-9372 /overlayfs
 [ -f /overlayfs/LiveOS/overlay--4C04-9372 -a -w
 /overlayfs/LiveOS/overlay--4C04-9372 ]  echo ok
 
 
 Cheers,
 
     Urs
 

Re: Persistent Data in SL LiveDVD on USB

[William Shu]

 ]
dracut: + echo 6dracut: Loading SELinux policy
dracut: + [ yes != yes ]
dracut: + [ -x /sysroot/sbin/load_policy ]
dracut: + chroot /sysroot /sbin/load_policy -i
dracut: + out=
dracut: + ret=0
dracut: + info
dracut: + check_quiet
dracut: + [ -z yes ]
dracut: 
dracut: + echo 6dracut:
dracut: + [ yes != yes ]
dracut: + [ enforcing = disabled ]
dracut: + [ 0 -eq 0 -o 0 -eq 2 ]
dracut: + [ -e /sysroot/.autorelabel ]
dracut: + mount --bind /dev /sysroot/dev
dracut: + chroot /sysroot /sbin/restorecon -R /dev
dracut: + return 0
dracut: + [ -e /pre-pivot/90plymouth-newroot.sh ]
dracut: + . /pre-pivot/90plymouth-newroot.sh
dracut: + [ -x /bin/plymouth ]
dracut: + /bin/plymouth --newroot=/sysroot
dracut: + getarg init=
dracut: + set +x
dracut: + return 1
dracut: + [ -f /sysroot -a -x /sysroot ]
dracut: + [ -f /sysroot/sbin/init -a -x /sysroot/sbin/init ]
dracut: + INIT=/sbin/init
dracut: + break
dracut: + [ /sbin/init ]
dracut: + getarg rdbreak
dracut: + set +x
dracut: + return 1
dracut: + udevadm control --stop-exec-queue
dracut: + HARD=
dracut: + pidof udevd
dracut: + pidof udevd
dracut: + kill 622
dracut: + kill 317
dracut: + kill 316
dracut: + kill 91
dracut: + HARD=-9
dracut: + pidof udevd
dracut: + pidof udevd
dracut: + kill -9 622
dracut: + kill -9 317
dracut: + kill -9 316
dracut: + kill -9 91
dracut: + HARD=-9
dracut: + pidof udevd
dracut: + pidof udevd
dracut: + kill -9 622
dracut: + kill -9 317
dracut: + kill -9 316
dracut: + kill -9 91
dracut: + HARD=-9
dracut: + pidof udevd
dracut: + export -p
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=BOOT_IMAGE='vmlinuz0'
dracut: + i=BOOT_IMAGE='vmlinuz0'
dracut: + i=BOOT_IMAGE
dracut: + [ BOOT_IMAGE = root -o BOOT_IMAGE = PATH -o BOOT_IMAGE = HOME -o 
BOOT_IMAGE = TERM ]
dracut: + unset BOOT_IMAGE
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=HOME='/'
dracut: + i=HOME='/'
dracut: + i=HOME
dracut: + [ HOME = root -o HOME = PATH -o HOME = HOME -o HOME = TERM ]
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=LANG='en_US.utf8'
dracut: + i=LANG='en_US.utf8'
dracut: + i=LANG
dracut: + [ LANG = root -o LANG = PATH -o LANG = HOME -o LANG = TERM ]
dracut: + unset LANG
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=PATH='/sbin:/bin:/usr/sbin:/usr/bin'
dracut: + i=PATH='/sbin:/bin:/usr/sbin:/usr/bin'
dracut: + i=PATH
dracut: + [ PATH = root -o PATH = PATH -o PATH = HOME -o PATH = TERM ]
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=PWD='/'
dracut: + i=PWD='/'
dracut: + i=PWD
dracut: + [ PWD = root -o PWD = PATH -o PWD = HOME -o PWD = TERM ]
dracut: + unset PWD
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: Switching root
dracut: + unset
dracut: + i=TERM='linux'
dracut: + i=TERM='linux'
dracut: + i=TERM
dracut: + [ TERM = root -o TERM = PATH -o TERM = HOME -o TERM = TERM ]
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=initrd='initrd0.img'
dracut: + i=initrd='initrd0.img'
dracut: + i=initrd
dracut: + [ initrd = root -o initrd = PATH -o initrd = HOME -o initrd = TERM ]
dracut: + unset initrd
dracut: + i=export
dracut: + i=
dracut: + i=
dracut: + [  = root -o  = PATH -o  = HOME -o  = TERM ]
dracut: + unset
dracut: + i=overlay='UUID=4C04-9372'
dracut: + i=overlay='UUID=4C04-9372'
dracut: + i=overlay
dracut: + [ overlay = root -o overlay = PATH -o overlay = HOME -o overlay = 
TERM ]
dracut: + unset overlay
dracut: + initargs=
dracut: + read CLINE
dracut: + getarg init=
dracut: + set +x
dracut: + return 1
dracut: + set initrd=initrd0.img root=live:UUID=4C04-9372 rootfstype=vfat rw 
liveimg overlay=UUID=4C04-9372 LANG=en_US.utf8 rdinitdebug rd_NO_LUKS rd_NO_MD 
rd_NO_DM BOOT_IMAGE=vmlinuz0
dracut: + shift
dracut: + getarg rdcopystate
dracut: + set +x
dracut: + return 1
dracut: + info Switching root
dracut: + check_quiet
dracut: + [ -z yes ]
dracut: + echo 6dracut: Switching root
dracut: + [ yes != yes ]
dracut: + wait_for_loginit
dracut: + getarg rdinitdebug
dracut: + set +x
dracut: + return 0
dracut: + set +x


---[end dracut output]--

--- On Wed, 3/16/11, Urs Beyerle urs.beye...@env.ethz.ch wrote:

 From: Urs Beyerle urs.beye...@env.ethz.ch
 Subject: Re: Persistent Data in SL LiveDVD on USB
 To: William Shu ws...@yahoo.com
 Cc: scientific-linux-us...@fnal.gov
 Date: Wednesday, March 16, 2011, 3:43 PM
 Hi William
 
 On 03/15/2011 11:19 PM, William Shu wrote:
  Dear All,
  I must be missing something. I do not seem to install
 and retain packages on liveDVD installed on a USB stick,
 despite using

Persistent Data in SL LiveDVD on USB

[William Shu]

Dear All,
I must be missing something. I do not seem to install and retain packages on 
liveDVD installed on a USB stick, despite using the data persistence options on 
livecd-iso-to-disk, viz:

# livecd-iso-to-disk --reset-mbr --overlay-size-mb 1024 \
 --home-size-mb 512 \
 path/SL-60-i386-2011-03-07-LiveDVD.iso \
 /dev/partition name

The programs livecd-tools and liveusb-creator are retained on reboot, but not 
the others. Also, configuration data, etc. stored in the home directory, 
/home/sluser, are retained. 



Some sample installs that disappeared (Id not matter whether I used yum, ume:
$ su -c 'rpm -Uvh 
http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm'
$ su -c 'yum install yumex'
$ su -c 'yum install xfig transfig fig2ps gv'
$ su -c 'yum install ocaml ocaml-emacs ocaml-lablgl ocaml-lablgl-devel 
ocaml-lablgtk ocaml-lablgtk-devel ocaml-lablgtk-doc ocaml-doc'
$ su -c 'yum install latex2rtf latex2html'


Ragards,

William.



  

thread scheduling and migration

[William Shu]

Dear all, wonder if anybody can help: (Tried googling on behalf of third party 
to no success)

Does anyone know of any software (free preferred) -- or group of software 
packages -- that can assist in: (a) spliting a process into, say threads, with  
(b) possibility of migrating the thread (or processes) to other machines that 
would continue running the threads/processes. Machines could be virtual 
machines.

Ideally, (I think) one of the ideas is to have access to the threads (+ 
executing environment) and somehow have [authorised] user control on which 
machines to schedule them, and to get output.

Software could run on linux or windows (Software on windows was actually asked, 
but linux (SL) can also be considered.




Anyhelp / leads will be appreciated.

William



  

Re: a request for independent confirmation|refutation of observed behavior of 5.6 x86_64 X11

[William Shu]

Dear Larry,
Not sure if this will help, but I had the observed behaviour when updating some 
packages of the stock SL5.5 x386 LiveDVD using yumex. The OS was installed on a 
USB stick. (Unfortunately, I didn't pursue it further: I assumed it was freak 
given occasional corruption of my USB stick.) This was on an AMD 64 bit machine 
with an nvidia graphics card that I happened on.

As I recall, the USB mouse and keyboard stopped working with a message that 
interrupt 193 (I think) was henceforth ignored. However, I regained keyboard 
control when I attached a PS/2 keyboard. (I didn't have a PS/2 Mouse to try 
out.) On reboot, I didn't have the problem again!

Hope the above is of help

William.

--- On Tue, 2/15/11, Larry Vaden va...@texoma.net wrote:

 From: Larry Vaden va...@texoma.net
 Subject: a request for independent confirmation|refutation of observed 
 behavior of 5.6 x86_64 X11
 To: scientific-linux-us...@fnal.gov
 Date: Tuesday, February 15, 2011, 12:19 AM
 Hello SL list members,
 
 This is a request for independent confirmation or
 refutation of
 observed behavior of 5.6 x86_64 X11.
 
 The observed behavior is that X11 on an AMD 64 locks up
 when probed
 with 'nmap -A -PN host.domain.tld' (Nmap v 4.11 from 5.6)
 whereas it
 does not lock up when probed with a relatively recent
 release, Nmap
 5.21.
 
 Specifically, the console session's mouse pointer can still
 be moved,
 but mouse clicks and the keyboard aren't functional.
 
 Further, other jobs running in non-X11 mode proceed as
 normal.
 
 If you can confirm or refute this observed behavior, please
 reply.
 
 kind regards/ldv
 


 

8:00? 8:25? 8:40? Find a flick in no time 
with the Yahoo! Search movie showtime shortcut.
http://tools.search.yahoo.com/shortcuts/#news

Any Experience of SL 5.5 or later with these HP machines?

[William Shu]

Dear All,

I would be grateful if you can share with me your experiences with the 
following HP machines using SL 5.5 or later. SL is the chosen O/S and so 
compromises can be made on hardware, not change of O/S. I am most concern with:
  ++ the processor performance
  ++ graphics card (for basic but fast simulation display, nothing critical)
  ++ WLAN and bluetooth connections, and
  ++ use of external HD/dvd drive working on SL.

* Would like the touch screen to work for the TouchSmart tm2t series, but it 
could be sacrificed. I'm aware it might be slower processor, and so may need to 
run for longer.

* Also, I am happy to wait for SL 6.x to activate features that work on SL 6.x.



1) HP TouchSmart tm2t series

Processor  graphics options:
* Intel(R) Core(TM) i3-380UM (1.33GHz, 3MB L3 Cache) + Intel(R) HD Graphics 
[HDMI, VGA]
* Intel(R) Core(TM) i3-380UM (1.33GHz, 3MB L3Cache) +512MB ATI Mobility 
Radeon(TM) HD 5450 [HDMI, VGA]
* Intel(R) Core(TM) i5-470UM (1.33GHz, 3MB L3Cache) +512MB ATI Mobility 
Radeon(TM) HD 5450 [HDMI, VGA] 

Network Options:
* Intel Wireless-N Card
* 802.11b/g/n WLAN and Bluetooth(R)
* Intel Wireless-N Card with Bluetooth

Memory options:
4GB DDR3 System Memory (2 Dimm)
4GB DDR3 System Memory (1 Dimm)
6GB DDR3 System Memory (2 Dimm)
8GB DDR3 System Memory (2 Dimm) 

External Drive Options:
* External Tray Super Multi 8X DVD+/-RW w/Double Layer
* External Tray Lightscribe Blu-Ray ROM with SuperMulti DVD+/-R/RW Double Layer 

Webcam/Fingerprinting:
HP TrueVision Webcam and FingerPrint 


2) ENVY 17 series

Processor   Intel(R) Core(TM) i7-720QM Quad Core processor (1.6GHz, 6MB L3 
Cache) with Turbo Boost up to 2.8GHz
Graphics card   1GB ATI Mobility Radeon(TM) HD 5850 Graphics [HDMI]
Memory  8GB DDR3 System Memory (2 Dimm)
Hard drive  500GB 7200RPM Hard Drive with HP ProtectSmart Hard Drive 
Protection
Primary battery 6 Cell Lithium Ion Battery (standard) - Up to 2.25 hours of 
battery life +++
Display 17.3 diagonal HD+ HP BrightView Infinity LED Display (1600 x 900)
Primary optical drive   SuperMulti 8X DVD+/-R/RW with Double Layer Support 
(Slot Load)
Personalization HP TrueVision HD Webcam
Networking  Intel Wireless-N Card with Bluetooth
KeyboardBacklit Keyboard


3) dv6t series

Processor   Intel(R) Core(TM) i5-580M Dual Core Processor (2.66GHz, 3MB L3 
Cache) with Turbo Boost up to 3.33GHz
Graphics card   1GB ATI Mobility Radeon(TM) HD 5650 switchable graphics [HDMI, 
VGA] - For Dual Core Processors
Memory  4GB DDR3 System Memory (2 Dimm)
Hard drive  500GB 7200RPM Hard Drive with HP ProtectSmart Hard Drive 
Protection
Primary battery High Capacity 6 Cell Lithium Ion Battery (standard)
Display 15.6 diagonal High Definition LED HP Brightview Widescreen Display 
(1366x768)
Primary optical drive   LightScribe SuperMulti 8X DVD+/-RW with Double Layer 
Support
Personalization HP TrueVision Webcam and Digital Microphone
Networking  Intel Wireless-N Card with Bluetooth
KeyboardStandard Keyboard

Feedback appreciated,

William.



  

Re: Fw: 9825 wireless card auto disconnects!

[William Shu]

Thanks Greg,
The connection still fails over an open network. The only difference is that 
the SIOCSIFFLAGS: Unknown error 132 error does not occur with /sbin/ifconfig 
wlan0 up, viz:
[r...@slinux sluser]# `/sbin/ifconfig wlan0 down; /sbin/modprobe -r ath9k`
[r...@slinux sluser]# /sbin/modprobe ath9k; /sbin/ifconfig wlan0 up
[r...@slinux sluser]# exit

Thanks for the suggestions Greg, but I can't tinker with the machine, given 
that it's a wrong specification and I expect it to be swapped for what was 
originally requested. Unfortunately, I now have to make do as everything is 
taking forever ...

William.


--- On Tue, 8/31/10, Greg Heilers gheil...@earthlink.net wrote:

 From: Greg Heilers gheil...@earthlink.net
 Subject: Re: Fw: 9825 wireless card auto disconnects!
 To: William Shu ws...@yahoo.com
 Date: Tuesday, August 31, 2010, 5:32 AM
 I had trouble with the Atheros cards
 when I installed Ubuntu on a friend's
 Toshiba Laptop.  On my own Dell laptop, the stock
 Broadcom card gave
 me trouble...so I simply bought an Intel card for about
 $25.00, and it
 works perfectly (running Slackware and Debian).  I
 have also often noticed
 a great difference in performance of the wireless cards,
 between a Live DVD
 environment, and a full-blown hard-drive-installed
 environment.
 
 Does it connect successfully to a free and open network,
 such as at the library?
 
 My suggestion - see if you can find a cheap Intel card that
 is compatible
 with your Compaq. 
 
 
 
 On Mon, 30 Aug 2010 08:59:31 -0700 (PDT)
 William Shu ws...@yahoo.com
 wrote:
 
  Dear All,
  I forwarded this mail back in July buy got no reply.
 So I can use the machine, does anyone have a workaround that
 avoids changing/recompiling stock SL software/kernel?
 (Googling seems to suggest there is a fundamental problem; I
 lack the needed networking skills.)
  
  Many thanks
  
  William.
  
  --- On Wed, 7/21/10, William Shu ws...@yahoo.com
 wrote:
  
   From: William Shu ws...@yahoo.com
   Subject: 9825 wireless card auto disconnects!
   To: scientific-linux-us...@fnal.gov
   Cc: William S. Shu ws...@yahoo.com
   Date: Wednesday, July 21, 2010, 7:54 PM
   Dear all,
   I have an atheros 9825 wireless card (on a
 compaq
   CQ60-615DX) which is detected, but somehow fails
 to connect
   to -- or rather immediately disconnects
 immediately from --
   the network when the password is given. I am
 running it
   using linux 5.5 livedvd, but the same device
 connects
   successfully under Windows7.
   
   It seems this issue was discussed sometime
 before, but I do
   not seem to find it. Any help appreciated. Below
 are details
   from wpa_supplicant.log and dmesg that I guess
 are helpful.
   
   William.
   
   $ uname -a
   Linux slinux 2.6.18-194.3.1.el5 #1 SMP Fri May 7
 01:52:57
   EDT 2010 i686 i686 i386 GNU/Linux
   
   $ cat /var/log/wpa_supplicant.log 
   (wext) Device wlan0 kernel driver name: ath9k.
   Device wlan0 kernel driver name: ath9k.
   Trying to associate with 00:18:e7:01:64:af
   (SSID='doit1wlan' freq=2437 MHz)
   Associated with 00:18:e7:01:64:af
   WPA: Key negotiation completed with
 00:18:e7:01:64:af
   [PTK=TKIP GTK=TKIP]
   CTRL-EVENT-CONNECTED - Connection to
 00:18:e7:01:64:af
   completed (auth) [id=0 id_str=]
   CTRL-EVENT-DISCONNECTED - Disconnect event -
 remove keys
   
   
   $ dmesg |tail -35 
   r8169: eth0: link down
   ADDRCONF(NETDEV_UP): eth0: link is not ready
   ADDRCONF(NETDEV_UP): wlan0: link is not ready
   ACPI: PCI interrupt for device :00:1b.0
 disabled
   PCI: Enabling device :00:1b.0 ( -
 0002)
   ACPI: PCI Interrupt :00:1b.0[A] - GSI 22
 (level,
   low) - IRQ 58
   PCI: Setting latency timer of device :00:1b.0
 to 64
   hfs: unable to find HFS+ superblock
   ACPI: PCI interrupt for device :00:1b.0
 disabled
   PCI: Enabling device :00:1b.0 ( -
 0002)
   ACPI: PCI Interrupt :00:1b.0[A] - GSI 22
 (level,
   low) - IRQ 58
   PCI: Setting latency timer of device :00:1b.0
 to 64
   [drm] Initialized drm 1.0.1 20051102
   ACPI: PCI Interrupt :00:02.0[A] - GSI 16
 (level,
   low) - IRQ 74
   [drm] Initialized i915 1.8.0 20060929 on minor 0
   set status page addr 0x03fff000
   wlan0: direct probe to AP 00:18:e7:01:64:af (try
 1)
   wlan0: deauthenticating from 00:18:e7:01:64:af by
 local
   choice (reason=3)
   wlan0: direct probe to AP 00:18:e7:01:64:af (try
 1)
   wlan0: direct probe responded

   wlan0: authenticate with AP 00:18:e7:01:64:af
 (try 1)
   wlan0: authenticated
   wlan0: associate with AP 00:18:e7:01:64:af (try
 1)
   wlan0: RX AssocResp from 00:18:e7:01:64:af
 (capab=0x431
   status=0 aid=1)
   wlan0: associated
   ADDRCONF(NETDEV_CHANGE): wlan0: link becomes
 ready
   wlan0: no IPv6 routers present
   wlan0: deauthenticating from 00:18:e7:01:64:af by
 local
   choice (reason=3)
   
   
   
         
   
 
 
 --
 
 Greg Heilers
 Registered Linux user #328317 
 Slackware 12.2 (2.6.27.7)
 Debian Lenny (2.6.27.7)
 AUS
 
 For two incredible email

Re: 9825 wireless card auto disconnects!

[William Shu]

Thanks Isaac, Alan.
Sorry I do not currently have immediate access.

Alan, the details of network devices are given below.

Isaac, the suggestion to restart wireless did not work. Details given below.

--- Details of network devices ---
[slu...@slinux ~]$ 
[slu...@slinux ~]$ for BUSID in $(/sbin/lspci | awk '{ IGNORECASE=1 } /net/ { 
print $1 }'); do /sbin/lspci -s $BUSID -m; /sbin/lspci -s $BUSID -n; done
01:00.0 Ethernet controller Realtek Semiconductor Co., Ltd. 
RTL8101E/RTL8102E PCI Express Fast Ethernet controller -r02 Hewlett-Packard 
Company Unknown device 360b
01:00.0 0200: 10ec:8136 (rev 02)
02:00.0 Network controller Atheros Communications Inc. AR9285 Wireless 
Network Adapter (PCI-Express) -r01 Hewlett-Packard Company Unknown device 
303f
02:00.0 0280: 168c:002b (rev 01)
[slu...@slinux ~]$ grep -i 168c /lib/modules/*/modules.alias | grep -i 002b
alias pci:v168Cd002Bsv*sd*bc*sc*i* ath9k
[slu...@slinux ~]$ 



- restart of wireless device -

[slu...@slinux ~]$ su
[r...@slinux sluser]# /sbin/ifconfig wlan0
wlan0 Link encap:Ethernet  HWaddr C4:17:FE:96:B1:B7  
  BROADCAST MULTICAST  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000 
  RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

[r...@slinux sluser]# /sbin/ifconfig wlan0 down; /sbin/modprobe -r ath9k
[r...@slinux sluser]# 
[r...@slinux sluser]# /sbin/modprobe ath9k; /sbin/ifconfig wlan0 up
SIOCSIFFLAGS: Unknown error 132
[r...@slinux sluser]# 
[r...@slinux sluser]# dmesg |tail -23
ACPI: PCI interrupt for device :02:00.0 disabled
ath9k: Driver unloaded
cfg80211: Calling CRDA to update world regulatory domain
cfg80211: World regulatory domain updated:
(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
(2402000 KHz - 2472000 KHz @ 4 KHz), (300 mBi, 2000 mBm)
(2457000 KHz - 2482000 KHz @ 2 KHz), (300 mBi, 2000 mBm)
(2474000 KHz - 2494000 KHz @ 2 KHz), (300 mBi, 2000 mBm)
(517 KHz - 525 KHz @ 4 KHz), (300 mBi, 2000 mBm)
(5735000 KHz - 5835000 KHz @ 4 KHz), (300 mBi, 2000 mBm)
PCI: Enabling device :02:00.0 ( - 0002)
ACPI: PCI Interrupt :02:00.0[A] - GSI 17 (level, low) - IRQ 225
PCI: Setting latency timer of device :02:00.0 to 64
ath: EEPROM regdomain: 0x69
ath: EEPROM indicates we should expect a direct regpair map
ath: Country alpha2 being used: 00
ath: Regpair used: 0x69
phy0: Selected rate control algorithm 'ath9k_rate_control'
Registered led device: ath9k-phy0::radio
Registered led device: ath9k-phy0::assoc
Registered led device: ath9k-phy0::tx
Registered led device: ath9k-phy0::rx
phy0: Atheros AR9285 MAC/BB Rev:2 AR5133 RF Rev:e0: mem=0xf8d0, irq=225
[r...@slinux sluser]# 


--- On Fri, 9/3/10, William Shu ws...@yahoo.com wrote:

 From: William Shu ws...@yahoo.com
 Subject: Re: 9825 wireless card auto disconnects!
 To: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov, 
 Isaac ibid...@lavabit.com
 Date: Friday, September 3, 2010, 1:28 AM
 Many Thanks Isaac,
 I will try out your suggestions ASAP.
 
 William.
 
 
 --- On Tue, 8/31/10, Isaac ibid...@lavabit.com
 wrote:
 
  From: Isaac ibid...@lavabit.com
  Subject: Re: 9825 wireless card auto disconnects!
  To: scientific-linux-us...@fnal.gov
 scientific-linux-us...@fnal.gov
  Date: Tuesday, August 31, 2010, 8:09 AM
  On Mon, 30 Aug 2010 08:59:31 -0700
  (PDT)
  William Shu wrote:
  
   Dear All,
   I forwarded this mail back in July buy got no
 reply.
  So I can use the
   machine, does anyone have a workaround that
 avoids
   changing/recompiling stock SL software/kernel?
  (Googling seems to
   suggest there is a fundamental problem; I lack
 the
  needed networking
   skills.)
   
   Many thanks
   
   William.
   
  ..
I have an atheros 9825 wireless card (on a
  compaq
CQ60-615DX) which is detected, but somehow
 fails
  to connect
to -- or rather immediately disconnects
  immediately from --
the network when the password is given. I
 am
  running it
using linux 5.5 livedvd, but the same
 device
  connects
successfully under Windows7.
  
  Atheros 9825? That sounds like it should be
 wireless-n,
  supported by
  ath9k (or perhaps madwifi-hal-0.10.5.6, but don't
 expect
  the latter to
  be easy).
  Here's a little info:
  http://madwifi-project.org/wiki/Compatibility/Atheros
  
  I'd see whether `ifconfig wlan0 down;modprobe -r
 ath9k`
  and
  `modprobe ath9k; ifconfig wlan0 up` will get it
 working.
  If not, I'd try the CentOS 2.6.32 kernel/some RHEL6
 kernel;
  try another
  distro; or wait a little bit.
  
  Be aware that ath9k is a work in progress.
  

It seems this issue was discussed sometime
  before, but I do
not seem to find it. Any help appreciated.
 Below
  are details
from wpa_supplicant.log and dmesg that I

Re: 9825 wireless card auto disconnects!

[William Shu]

Many Thanks Isaac,
I will try out your suggestions ASAP.

William.


--- On Tue, 8/31/10, Isaac ibid...@lavabit.com wrote:

 From: Isaac ibid...@lavabit.com
 Subject: Re: 9825 wireless card auto disconnects!
 To: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
 Date: Tuesday, August 31, 2010, 8:09 AM
 On Mon, 30 Aug 2010 08:59:31 -0700
 (PDT)
 William Shu wrote:
 
  Dear All,
  I forwarded this mail back in July buy got no reply.
 So I can use the
  machine, does anyone have a workaround that avoids
  changing/recompiling stock SL software/kernel?
 (Googling seems to
  suggest there is a fundamental problem; I lack the
 needed networking
  skills.)
  
  Many thanks
  
  William.
  
 ..
   I have an atheros 9825 wireless card (on a
 compaq
   CQ60-615DX) which is detected, but somehow fails
 to connect
   to -- or rather immediately disconnects
 immediately from --
   the network when the password is given. I am
 running it
   using linux 5.5 livedvd, but the same device
 connects
   successfully under Windows7.
 
 Atheros 9825? That sounds like it should be wireless-n,
 supported by
 ath9k (or perhaps madwifi-hal-0.10.5.6, but don't expect
 the latter to
 be easy).
 Here's a little info:
 http://madwifi-project.org/wiki/Compatibility/Atheros
 
 I'd see whether `ifconfig wlan0 down;modprobe -r ath9k`
 and
 `modprobe ath9k; ifconfig wlan0 up` will get it working.
 If not, I'd try the CentOS 2.6.32 kernel/some RHEL6 kernel;
 try another
 distro; or wait a little bit.
 
 Be aware that ath9k is a work in progress.
 
   
   It seems this issue was discussed sometime
 before, but I do
   not seem to find it. Any help appreciated. Below
 are details
   from wpa_supplicant.log and dmesg that I guess
 are helpful.
 ..
 


  

Fw: 9825 wireless card auto disconnects!

[William Shu]

Dear All,
I forwarded this mail back in July buy got no reply. So I can use the machine, 
does anyone have a workaround that avoids changing/recompiling stock SL 
software/kernel? (Googling seems to suggest there is a fundamental problem; I 
lack the needed networking skills.)

Many thanks

William.

--- On Wed, 7/21/10, William Shu ws...@yahoo.com wrote:

 From: William Shu ws...@yahoo.com
 Subject: 9825 wireless card auto disconnects!
 To: scientific-linux-us...@fnal.gov
 Cc: William S. Shu ws...@yahoo.com
 Date: Wednesday, July 21, 2010, 7:54 PM
 Dear all,
 I have an atheros 9825 wireless card (on a compaq
 CQ60-615DX) which is detected, but somehow fails to connect
 to -- or rather immediately disconnects immediately from --
 the network when the password is given. I am running it
 using linux 5.5 livedvd, but the same device connects
 successfully under Windows7.
 
 It seems this issue was discussed sometime before, but I do
 not seem to find it. Any help appreciated. Below are details
 from wpa_supplicant.log and dmesg that I guess are helpful.
 
 William.
 
 $ uname -a
 Linux slinux 2.6.18-194.3.1.el5 #1 SMP Fri May 7 01:52:57
 EDT 2010 i686 i686 i386 GNU/Linux
 
 $ cat /var/log/wpa_supplicant.log 
 (wext) Device wlan0 kernel driver name: ath9k.
 Device wlan0 kernel driver name: ath9k.
 Trying to associate with 00:18:e7:01:64:af
 (SSID='doit1wlan' freq=2437 MHz)
 Associated with 00:18:e7:01:64:af
 WPA: Key negotiation completed with 00:18:e7:01:64:af
 [PTK=TKIP GTK=TKIP]
 CTRL-EVENT-CONNECTED - Connection to 00:18:e7:01:64:af
 completed (auth) [id=0 id_str=]
 CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys
 
 
 $ dmesg |tail -35 
 r8169: eth0: link down
 ADDRCONF(NETDEV_UP): eth0: link is not ready
 ADDRCONF(NETDEV_UP): wlan0: link is not ready
 ACPI: PCI interrupt for device :00:1b.0 disabled
 PCI: Enabling device :00:1b.0 ( - 0002)
 ACPI: PCI Interrupt :00:1b.0[A] - GSI 22 (level,
 low) - IRQ 58
 PCI: Setting latency timer of device :00:1b.0 to 64
 hfs: unable to find HFS+ superblock
 ACPI: PCI interrupt for device :00:1b.0 disabled
 PCI: Enabling device :00:1b.0 ( - 0002)
 ACPI: PCI Interrupt :00:1b.0[A] - GSI 22 (level,
 low) - IRQ 58
 PCI: Setting latency timer of device :00:1b.0 to 64
 [drm] Initialized drm 1.0.1 20051102
 ACPI: PCI Interrupt :00:02.0[A] - GSI 16 (level,
 low) - IRQ 74
 [drm] Initialized i915 1.8.0 20060929 on minor 0
 set status page addr 0x03fff000
 wlan0: direct probe to AP 00:18:e7:01:64:af (try 1)
 wlan0: deauthenticating from 00:18:e7:01:64:af by local
 choice (reason=3)
 wlan0: direct probe to AP 00:18:e7:01:64:af (try 1)
 wlan0: direct probe responded
 wlan0: authenticate with AP 00:18:e7:01:64:af (try 1)
 wlan0: authenticated
 wlan0: associate with AP 00:18:e7:01:64:af (try 1)
 wlan0: RX AssocResp from 00:18:e7:01:64:af (capab=0x431
 status=0 aid=1)
 wlan0: associated
 ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
 wlan0: no IPv6 routers present
 wlan0: deauthenticating from 00:18:e7:01:64:af by local
 choice (reason=3)
 
 
 
       
 

9825 wireless card auto disconnects!

[William Shu]

Dear all,
I have an atheros 9825 wireless card (on a compaq CQ60-615DX) which is 
detected, but somehow fails to connect to -- or rather immediately disconnects 
immediately from -- the network when the password is given. I am running it 
using linux 5.5 livedvd, but the same device connects successfully under 
Windows7.

It seems this issue was discussed sometime before, but I do not seem to find 
it. Any help appreciated. Below are details from wpa_supplicant.log and dmesg 
that I guess are helpful.

William.

$ uname -a
Linux slinux 2.6.18-194.3.1.el5 #1 SMP Fri May 7 01:52:57 EDT 2010 i686 i686 
i386 GNU/Linux

$ cat /var/log/wpa_supplicant.log 
(wext) Device wlan0 kernel driver name: ath9k.
Device wlan0 kernel driver name: ath9k.
Trying to associate with 00:18:e7:01:64:af (SSID='doit1wlan' freq=2437 MHz)
Associated with 00:18:e7:01:64:af
WPA: Key negotiation completed with 00:18:e7:01:64:af [PTK=TKIP GTK=TKIP]
CTRL-EVENT-CONNECTED - Connection to 00:18:e7:01:64:af completed (auth) [id=0 
id_str=]
CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys


$ dmesg |tail -35 
r8169: eth0: link down
ADDRCONF(NETDEV_UP): eth0: link is not ready
ADDRCONF(NETDEV_UP): wlan0: link is not ready
ACPI: PCI interrupt for device :00:1b.0 disabled
PCI: Enabling device :00:1b.0 ( - 0002)
ACPI: PCI Interrupt :00:1b.0[A] - GSI 22 (level, low) - IRQ 58
PCI: Setting latency timer of device :00:1b.0 to 64
hfs: unable to find HFS+ superblock
ACPI: PCI interrupt for device :00:1b.0 disabled
PCI: Enabling device :00:1b.0 ( - 0002)
ACPI: PCI Interrupt :00:1b.0[A] - GSI 22 (level, low) - IRQ 58
PCI: Setting latency timer of device :00:1b.0 to 64
[drm] Initialized drm 1.0.1 20051102
ACPI: PCI Interrupt :00:02.0[A] - GSI 16 (level, low) - IRQ 74
[drm] Initialized i915 1.8.0 20060929 on minor 0
set status page addr 0x03fff000
wlan0: direct probe to AP 00:18:e7:01:64:af (try 1)
wlan0: deauthenticating from 00:18:e7:01:64:af by local choice (reason=3)
wlan0: direct probe to AP 00:18:e7:01:64:af (try 1)
wlan0: direct probe responded
wlan0: authenticate with AP 00:18:e7:01:64:af (try 1)
wlan0: authenticated
wlan0: associate with AP 00:18:e7:01:64:af (try 1)
wlan0: RX AssocResp from 00:18:e7:01:64:af (capab=0x431 status=0 aid=1)
wlan0: associated
ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
wlan0: no IPv6 routers present
wlan0: deauthenticating from 00:18:e7:01:64:af by local choice (reason=3)



  

Re: Wine Question?

[William Shu]

Codeweaver's wine (non-free) also has variants of wine for games. Never used it 
but its variant for MS Word/office is known to be much less hassle to use.

Regards,

William.

--- On Mon, 4/12/10, Andy Mastbaum mastb...@hep.upenn.edu wrote:

From: Andy Mastbaum mastb...@hep.upenn.edu
Subject: Re: Wine Question?
To: Nathan Jeffrey Allen nathan_all...@juno.com
Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
Date: Monday, April 12, 2010, 3:36 PM

Nathan,

SL may indeed be intended for stable workstations and servers, but it's Linux 
all the same and no better or worse than any other distro for this.

Most games and other software using 3D acceleration and other such fanciness 
don't work so well with the standard wine distribution (latest from 
winehq.org), but give it a try. If that doesn't work, there are some good 
non-free (but cheap) commercial/gaming versions of wine -- I've had success 
with one called Cedega (transgaming.com).

Good luck!

Andy

Nathan Jeffrey Allen wrote:
 How do i get wine installed to play my windows games?

Any 'best' hard drives and incremental backup approaches to home systems?

[William Shu]

Hi,
I would be grateful for feedback on the following.

At some point in time, I preferred to backup data and software on disks
on separate machines so as to be able to have incremental backups. Use
of CD/DVD R or RW was not adequate, as they frequently went bad, kept 
incoherent trail of updates or simply could not be updated. Thus, I settled for 
having material on multiple drives.



I've been having disk crash on my computers at home (with Maxtor drives) and 
some informal
investigations suggested Western Digital harddrives were among the best
on the market. Unfortunately, I suddenly lost my laptop and two western
digital internal disk drives, and one external drive (also a Western
digital), sort of without warning. Ironically, the Fijutsu drive on a clone I 
had 10 years ago, and bought the WD for fear it might fail, is working (it 
fails the S. M. A. R. T. boot test sometimes)!

My questions are:
QUESTION 1
What is the best approach to handle incremental backup data, if hard disks are 
not that reliable this days? (This is a home system, and tape drives and 
variants are out!)


QUESTION 2)
Which are the best marks of hard drives to purchase, especially for linux-based 
systems that can be on for relatively long periods -- 6-24 hours a day?

REgards,

William.

Re: one-sided ssh connection, restricted access to X.

[William Shu]

Thanks Miles,
Will implement solution for #2 ASAP..

For #1, the settings are the defaults obtained when installing from DVD (x86) 
-- enforcing, I think. Or is there a more specific setting I should search for? 
(can only access machine on working day, earliest.)

William.

--- On Sat, 12/5/09, Miles O'Neal roadkills.r...@gmail.com wrote:

From: Miles O'Neal roadkills.r...@gmail.com
Subject: Re: one-sided ssh connection, restricted access to X.
To: William Shu ws...@yahoo.com
Cc: scientific-linux-us...@fnal.gov
Date: Saturday, December 5, 2009, 7:22 PM

For #1, what are your SELinux settings

For #2, that also applies, but... you should NOT by default be able to have 
other users access your X display.  That's the way it is supposed to work.

If you want local users to be able to access your display, type in a terminal 
window:


xhost +localhost

Then as long as the DISPLAY is :0 they should work (if SELinux isn't in the 
way).  If you wnat DISPLAY to be set to $HOST:0 you need to type

xhost +$HOST


On Sat, Dec 5, 2009 at 8:58 AM, William Shu ws...@yahoo.com wrote:


Hi, Please for help on two [related] problems (I'm probably missing something 
glaring!):

1)  On my newly installed SL54 on a machine *not* connected to the internet, I 
tried to connect to a remote machine (Redhat 9) via ssh and it does not allow 
me. I am lost, as sshd is activated on both machines, and I had used a laptop 
to make the connection to the remote machine  before. I can ssh connect from 
the Redhat 9 machine.


QUESTION:  What could I be doing wrong? (script of my attempts below). I can;t 
pick up what to do from man pages.


2) I tried to open emacs as root, but was not allowed.  I was only allowed 
connection after I executed 

$ xhost + 
to allow everybody access.

QUESTION: Is there no more secure way of enabling users on local machine to use 
X without having to enumerate them, or allow all to
 access? In the past, I've always been able to open a terminal window as root 
or 3rd party and use without probs.

Regards,

William.
 


[...@csc101a ~]$ uname -a
Linux csc101A 2.6.18-164.2.1.el5PAE #1 SMP Tue Sep 29 19:14:47 EDT 2009 i686 
i686 i386 GNU/Linux

[...@csc101a ~]$ 
[...@csc101a ~]$ ssh -XY 192.168.10.1
ssh: connect to host 192.168.10.1 port 22: Connection refused
[...@csc101a ~]$ xhost
access control enabled, only authorized clients can connect
SI:localuser:wss

[...@csc101a ~]$ xhost +
access control disabled, clients can connect from any host
[...@csc101a ~]$ ssh -XY w...@192.168.10.1
ssh: connect to host 192.168.10.1 port 22: Connection refused

[...@csc101a ~]$ ssh -XY w...@192.168.10.1
ssh: connect to host 192.168.10.1 port 22: Connection refused
[...@csc101a ~]$ ssh -XY w...@192.168.10.1

ssh: connect to host 192.168.10.1 port 22: Connection refused
[...@csc101a ~]$
 man xhost
[...@csc101a ~]$ ssh -v -XY 192.168.10.1
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.10.1 [192.168.10.1] port 22.

debug1: connect to address 192.168.10.1 port 22: Connection refused
ssh: connect to host 192.168.10.1 port 22: Connection refused
[...@csc101a ~]$ ssh -vv -XY 192.168.10.1
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 192.168.10.1 [192.168.10.1] port 22.
debug1: connect to address 192.168.10.1 port 22: Connection refused

ssh: connect to host 192.168.10.1 port 22: Connection refused
[...@csc101a ~]$ ssh -vvv -XY 192.168.10.1
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
debug1: Reading configuration data
 /etc/ssh/ssh_config
debug1: Applying options for *
debug2: ssh_connect: needpriv 0
debug1: Connecting to 192.168.10.1 [192.168.10.1] port 22.
debug1: connect to address 192.168.10.1 port 22: Connection refused

ssh: connect to host 192.168.10.1 port 22: Connection refused
[...@csc101a ~]$ 


--
[r...@csc101a wss]# emacs 
[1] 4833
[r...@csc101a wss]# Xlib: connection to :0.0 refused by server

Xlib: No protocol specified

emacs: Cannot connect to X server :0.0.
Check the DISPLAY environment variable or use `-d'.
Also use the `xhost' program to verify that it is set to permit
connections from your machine.







  





  

Re: Which of SL5.3 x86 and x86_64 is better on a Core 2 Duo T6500, 4GB HP laptop?

[William Shu]

Thanks for all the replies.

We'll wait for SL 5.4, and probably for the i386 version as Troy suggested. 
This best suits the requirements of minimal updates and hassles.

William.


--- On Mon, 10/19/09, Troy Dawson daw...@fnal.gov wrote:

From: Troy Dawson daw...@fnal.gov
Subject: Re: Which of SL5.3 x86 and x86_64 is better on a Core 2 Duo T6500, 4GB 
HP laptop?
To: William Shu ws...@yahoo.com
Cc: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Date: Monday, October 19, 2009, 4:22 PM

Hello,
Either x86 (often called i386) or x86_64 would work equally well on that 
machine.  As long as Windows is installed first, Scientific Linux should  see 
windows and set things up so that during bootup it will be easy to bootup 
whichever OS they want.

Which would I recommend.  I would recommend the x86 (i386) version.  The only 
reason is because it works best with browser plugins.  For speed both x86 and 
x86_64 are going to be the same for your day to day stuff.

One warning.  I am not impressed with Scientific Linux startup time, especially 
after playing with Fedora 11.  SL startup time might be good enough for your 
user, and after some tweeking can get much faster.  But I'm just warning you up 
front.

---

As for when SL 5.4 comes out, here is the plan.  This is just a plan, and 
things could slip.

SL 5.4 Release Candidate 2 should come out at the end of this week (Oct. 22 or 
23).  This is should be the last real Release Candidate. Everything should say 
5.4 and point to 5.4, except the release notes.

Release Candidate 2 is going to sit for the next week to let everything give it 
lots of good tests.

We will then roll up the last of the security updates, the last of the bugs and 
make SL 5.4 Release Candidate 2.5.  This should be November 2 or 3rd.
SL 5.4 Release Candidate 2.5 is essentially the release.  Even the release 
notes should say released.  As long as there aren't any show stoppers, The next 
day or two we release it for real.
So currently, if nothing happens, we expect to release it November 4 or 5.

---

Troy

William Shu wrote:
 Hi,
 This may be a naive or repeated question but could someone please suggest 
 which of SL 5.3 (x86 or x86_64) would be better to dual-boot (with Windows 
 Vista Home and eventually Windows 7) for the Core 2 Duo T6500, 4 GB 
 customised HP laptop whose purchase details are further given below. The 
 machine is for a novice wants minimum update hassles, can flip between Vista 
 and SL easily, and prefers speed, especially at start-up.
 
 The owner is  not familiar with Windows Vista (me neither), and I was not 
 impressed by the time it took to boot. Would there be any speed penalty 
 and/or tweaking penalty in using x86 instead of x86-64 or vice-versa on 
 this processor?
 
 Given the newness of the machine (and so perhaps some of its components may 
 not yet have drivers etc), would waiting for SL 5.4 be worthwhile. If yes, 
 can Troy hasard an informed guess on possible release date/period for SL 5.4?
 
 I would be grateful for suggestions
 
 William.
 
 --[ Specification of HP dvt6 laptop ]-
 HP Pavilion Entertainment dv6t customizable Notebook PC
 • Genuine Windows Vista Home Premium with Service Pack 1 (64-bit)
 • Intel(R) Core(TM)2 Duo Processor T6500 (2.1GHz, 2MB L2 Cache, 800MHz FSB)
 • 4GB DDR2 System Memory (2 Dimm)
 • 320GB 7200RPM SATA Hard Drive with HP ProtectSmart Hard Drive Protection
 • Intel(R) Graphics Media Accelerator 4500MHD
 • 16.0 diagonal High Definition HP Brightview Display (1366x768)
 • LightScribe SuperMulti 8X DVD+/-RW with Double Layer Support
 • Webcam Only
 • Wireless-G Card with Bluetooth
 • 6 Cell Lithium Ion Battery
 • No Modem
 
 


-- __
Troy Dawson  daw...@fnal.gov  (630)840-6468
Fermilab  ComputingDivision/LCSI/CSI LMSS Group
__



  

How can I access a possibly corrupted hard drive

[William Shu]

Hi,
I suddenly could not boot from my Western Digital hard drive connected through 
a SATA PCI card. I was told the drive is 'seen' in the hardware and that my 
problem is in the operating system problem (software), which the tecnician 
cannot handle.

booting with a scientific linux 5.3 livedvd, I have tried to use fdisk to list 
and fsck to correct the errors but to no avail. tried gparted which seems to 
suggest disk is not formatted, and testdisk ends up with IO read errors. The 
drive was formatted for logical volume management (LVM), but it does not even 
appear when I click System-Adminstration-Logical Volume Management. from the 
desktop

Is there anyone who can suggest what could be wrong, what I could do to correct 
this problem, or at least get back my data?

Details of outputs from commands below.

Many thanks,

William.

[ fdisk and fsck outputs ]-

[r...@slinux sluser]# uname -a
Linux slinux 2.6.18-128.1.1.el5 #1 SMP Tue Feb 10 11:42:49 EST 2009 i686 i686 
i386 GNU/Linux
[r...@slinux sluser]# 
[r...@slinux sluser]# /sbin/fdisk -l
 
Disk /dev/hda: 81.9 GB, 81964302336 bytes
255 heads, 63 sectors/track, 9964 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot  Start End  Blocks   Id  System
/dev/hda1   *   1 637 5116671    b  W95 FAT32
/dev/hda2 638    9963    74911095    f  W95 Ext'd (LBA)
/dev/hda5 651    1415 6144831    b  W95 FAT32
/dev/hda6    9243    9499 2064321    c  W95 FAT32 (LBA)
/dev/hda7 638 650  104359+  83  Linux
/dev/hda8    1416    9242    62870346   8e  Linux LVM

Unable to read /dev/sda
[r...@slinux sluser]# /sbin/fsck -s /dev/sda{2,3,5,6,7} -ap
fsck 1.39 (29-May-2006)
fsck.ext2: No such file or directory while trying to open /dev/sda2
/dev/sda2: 
The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 device

snip


-[ Content of backup log testdisk backup.log ]-
#1255771918 Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63
 1 : start=   63, size=123780762, Id=07, P
 2 : start=123780825, size=  5012280, Id=83, *
 3 : start=128793105, size=496344240, Id=05, E




-[ Content of logfile of testdisk testdisk.log ]-


Sat Oct 17 05:28:14 2009
Command line: TestDisk /log /dev/sda

Using locale 'en_US.UTF-8'.
TestDisk 6.10, Data Recovery Utility, July 2008
Christophe GRENIER gren...@cgsecurity.org
http://www.cgsecurity.org
OS: Linux, kernel 2.6.18-128.1.1.el5 (#1 SMP Tue Feb 10 11:42:49 EST 2009)
Compiler: GCC 4.1 - Jul 26 2008 03:55:42
ext2fs lib: 1.39, ntfs lib: 9:0:0, reiserfs lib: 0.3.0.4, ewf lib: none
Hard disk list
Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63, sector size=512 - ATA WDC 
WD3200AAKS-0

Partition table type (auto): Intel
Disk /dev/sda - 320 GB / 298 GiB - ATA WDC WD3200AAKS-0
Partition table type: Intel

Interface Advanced
Geometry from i386 MBR: head=255 sector=63
get_geometry_from_list_part_aux head=255 nbr=6
get_geometry_from_list_part_aux head=8 nbr=1
get_geometry_from_list_part_aux head=16 nbr=1
get_geometry_from_list_part_aux head=32 nbr=1
get_geometry_from_list_part_aux head=64 nbr=1
get_geometry_from_list_part_aux head=128 nbr=1
get_geometry_from_list_part_aux head=240 nbr=1
get_geometry_from_list_part_aux head=255 nbr=6
 1 P HPFS - NTFS  0   1  1  7704 254 63  123780762
 NTFS, 63 GB / 59 GiB
 2 * Linux 7705   0  1  8016 254 63    5012280 [/boot1]
 EXT3 Large file Sparse superblock Recover, 2566 MB / 2447 MiB
 3 E extended  8017   0  1 38912 254 63  496344240

Analyse Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63
Geometry from i386 MBR: head=255 sector=63
get_geometry_from_list_part_aux head=255 nbr=6
get_geometry_from_list_part_aux head=8 nbr=1
get_geometry_from_list_part_aux head=16 nbr=1
get_geometry_from_list_part_aux head=32 nbr=1
get_geometry_from_list_part_aux head=64 nbr=1
get_geometry_from_list_part_aux head=128 nbr=1
get_geometry_from_list_part_aux head=240 nbr=1
get_geometry_from_list_part_aux head=255 nbr=6
Current partition structure:
 1 P HPFS - NTFS  0   1  1  7704 254 63  123780762
 2 * Linux 7705   0  1  8016 254 63    5012280 [/boot1]
 3 E extended  8017   0  1 38912 254 63  496344240
Backup partition structure
Ask the user for vista mode
Allow partial last cylinder : No
search_vista_part: 0

search_part()
Disk /dev/sda - 320 GB / 298 GiB - CHS 38913 255 63
   D HPFS - NTFS  0   1  1  7704 254 63  123780762
 NTFS, 63 GB / 59 GiB
   D Linux 7705   0  1  8016 254 63    5012280 [/boot1]
 EXT3 Large file Sparse 

Which of SL5.3 x86 and x86_64 is better on a Core 2 Duo T6500, 4GB HP laptop?

[William Shu]

Hi,

This may be a naive or repeated question but could someone please
suggest which of SL 5.3 (x86 or x86_64) would be better to dual-boot
(with Windows Vista Home and eventually Windows 7) for the Core 2 Duo
T6500, 4 GB customised HP laptop whose purchase details are further
given below. The machine is for a novice wants minimum update hassles,
can flip between Vista and SL easily, and prefers speed, especially at
start-up.



The owner is  not familiar with Windows Vista (me neither), and I was
not impressed by the time it took to boot. Would there be any speed
penalty and/or tweaking penalty in using x86 instead of x86-64 or
vice-versa on this processor?



Given the newness of the machine (and so perhaps some of its components
may not yet have drivers etc), would waiting for SL 5.4 be worthwhile.
If yes, can Troy hasard an informed guess on possible release
date/period for SL 5.4?



I would be grateful for suggestions



William.



--[ Specification of HP dvt6 laptop ]-

HP Pavilion Entertainment dv6t customizable Notebook PC 

• Genuine Windows Vista Home Premium with Service Pack 1 (64-bit) 

• Intel(R) Core(TM)2 Duo Processor T6500 (2.1GHz, 2MB L2 Cache, 800MHz FSB) 

• 4GB DDR2 System Memory (2 Dimm)

• 320GB 7200RPM SATA Hard Drive with HP ProtectSmart Hard Drive Protection 

• Intel(R) Graphics Media Accelerator 4500MHD 

• 16.0 diagonal High Definition HP Brightview Display (1366x768) 

• LightScribe SuperMulti 8X DVD+/-RW with Double Layer Support 

• Webcam Only 

• Wireless-G Card with Bluetooth 

• 6 Cell Lithium Ion Battery 

• No Modem 




  

Re: Latest kernel update cripples NetworkManager?

[William Shu]

Sorry Troy,
I am on SL 5.0; guess other relevant details are in prior submission

William.

--- On Mon, 5/11/09, Troy Dawson daw...@fnal.gov wrote:
From: Troy Dawson daw...@fnal.gov
Subject: Re: Latest kernel update cripples NetworkManager?
To: Avetisyan, Aram aram_avetis...@brown.edu
Cc: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Date: Monday, May 11, 2009, 4:21 PM

Hi,
For both of these, which version of Scientific Linux is this?

Troy

Avetisyan, Aram wrote:
 Hi William,
 
 Yes, the same exact thing (it can't see the networks) happens with
Intel's 4965AGN card. I have not been able to fix it though -- if you find a
solution, please let me know.
 
 -- Aram
 
 
 -Original Message-
 From: owner-scientific-linux-us...@listserv.fnal.gov on behalf of William
Shu
 Sent: Sun 5/10/2009 6:59 PM
 To: scientific-linux-us...@fnal.gov
 Cc: William S. Shu
 Subject: Latest kernel update cripples NetworkManager?
  Hi,
 Has anyone noticed this? It looks like the latest kernel update has
crippled NetworkManager! It does not even see wireless network,(using Intel(R)
PRO/Wireless 3945 Network Connection driver), and gives the following message
when I try to activate it manually:
 
 Error for wireless request Set Mode (8B06) :
 SET failed on device eth1 ; No such device.
 Error for wireless request Set Frequency (8B04) :
 SET failed on device eth1 ; No such device.
 Error for wireless request Set Bit Rate (8B20) :
 SET failed on device eth1 ; No such device.
 Error for wireless request Set Encode (8B2A) :
 SET failed on device eth1 ; No such device.
 SIOCGIFFLAGS: No such device
 Failed to bring up eth1.
 
 System detail:
 
 [...@hpsl5 ~]$ uname -a
 Linux hpsl5 2.6.18-128.1.10.el5xen #1 SMP Thu May 7 13:38:34 EDT 2009 i686
i686 i386 GNU/Linux
 [...@hpsl5 ~]$ 
 I use iwl3945 driver, though the system also downloadeds some
kernel*ipw3945 bit (from dependencies).
 
 William.
 
 
 
 
   


-- __
Troy Dawson  daw...@fnal.gov  (630)840-6468
Fermilab  ComputingDivision/LCSI/CSI LMSS Group
__

Re: problems getting eclipse to run on SL5.0

[William Shu]

Hi Troy,
I am using SL 5.0 on the machine (laptop). Barring inadvertency, it has always 
been updated with yum/yumex from SL sites/mirrors. I also have the same problem 
with an SL 5.0 desktop, but not with an SL5.2 desktop.

The requested output is:

[...@hpsl5 ~]$ rpm -qa | grep eclipse |sort
eclipse-cdt-3.1.2-8.el5.i386
eclipse-cdt-sdk-3.1.2-8.el5.i386
eclipse-checkstyle-4.0.1-6.el5.i386
eclipse-ecj-3.2.1-18.el5.i386
eclipse-jdt-3.2.1-18.el5.i386
eclipse-jdt-sdk-3.2.1-18.el5.i386
eclipse-pde-3.2.1-18.el5.i386
eclipse-pde-runtime-3.2.1-18.el5.i386
eclipse-platform-3.2.1-18.el5.i386
eclipse-platform-sdk-3.2.1-18.el5.i386
eclipse-rcp-3.2.1-18.el5.i386
eclipse-rcp-sdk-3.2.1-18.el5.i386
[...@hpsl5 ~]$ 

William.


--- On Mon, 5/11/09, Troy Dawson daw...@fnal.gov wrote:
From: Troy Dawson daw...@fnal.gov
Subject: Re: problems getting eclipse to run on SL5.0
To: ws...@yahoo.com ws...@yahoo.com
Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov 
SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
Date: Monday, May 11, 2009, 8:48 PM

That is the same version of jdk that I am running, and Eclipse comes up fine.
Are you using Eclipse from SL, or downloaded from somewhere?
Can you give the output of
  rpm -qa | grep eclipse | sort

Troy

William Shu wrote:
 Dear Connie,
 The version of java is given as in the command below:
 [...@hpsl5 ~]$ java -version
 java version 1.6.0_13
 Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
 Java HotSpot(TM) Client VM (build 11.3-b02, mixed mode, sharing)
 [...@hpsl5 ~]$
 
 William.
 
 --- On *Mon, 5/11/09, Connie Sieh /cs...@fnal.gov/* wrote:
 
 From: Connie Sieh cs...@fnal.gov
 Subject: Re: problems getting eclipse to run on SL5.0
 To: William Shu ws...@yahoo.com
 Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
 Date: Monday, May 11, 2009, 6:25 PM
 
 Which java is this?
 
 -Connie Sieh
 
 On Sat, 9 May 2009, William Shu wrote:
 
  --Boundary_(ID_tR8ZFhtkJ5pnkuN4BLNX5Q)
  Content-type:
  text/plain; charset=us-ascii
 
  Can anyone help?
 
  In order to learn how to use eclipse, I try running the eclipse
program
 for the first time and get the error message:
  [...@hpsl5 programmingEnvironments]$ eclipse 
  [2] 9568
  [...@hpsl5 programmingEnvironments]$ /usr/bin/java: symbol lookup
error:

/usr/lib/eclipse/configuration/org.eclipse.osgi/bundles/6/1/.cp/libswt-mozilla-gtk-3235.so:
 undefined symbol: _ZN4nsID5ParseEPKc
 
  with the eclipse logo stuck on my screen, and produces a pop-up
display
 with the following:
 
  JVM terminated. Exit code=127
  /usr/bin/java
  -Xms40m
  -Xmx256m
  -Dosgi.sharedConfiguration.area=/usr/lib/eclipse/configuration
  -jar /usr/share/eclipse/startup.jar
  -os linux
  -ws gtk
  -arch x86
  -launcher /usr/bin/eclipse
  -name Eclipse
  -showsplash 600
 
  -exitdata 23802a
  -vm /usr/bin/java
  -vmargs
  -Xms40m
  -Xmx256m
  -Dosgi.sharedConfiguration.area=/usr/lib/eclipse/configuration
  -jar /usr/share/eclipse/startup.jar
 
  I am running SL 5.0 on an HP Pavilion 5000 laptop:
  [...@hpsl5 programmingEnvironments]$ uname -a
  Linux hpsl5 2.6.18-128.1.6.el5xen #1 SMP Wed Apr 1 07:49:37 EDT
2009 i686
 i686 i386 GNU/Linux
  [...@hpsl5 programmingEnvironments]$
 
 
  Not sure if its the laptop, but it seems general/ 3rd party
software which
 install/run without problems on other machines (with SL 5.2 installed)
seem to
 unexpectedly crash on this one.
 
  William.
 
 
 
 
 
  --Boundary_(ID_tR8ZFhtkJ5pnkuN4BLNX5Q)
  Content-type: text/html; charset=us-ascii
 
  table cellspacing=0 cellpadding=0
 border=0 trtd
  valign=top
 style=font: inherit;Can anyone
help?brbrIn order
 to learn how to use eclipse, I try running the eclipse program for the
first
 time and get the error message:br[...@hpsl5
programmingEnvironments]$
 eclipse amp;br[2] 9568br[...@hpsl5
 programmingEnvironments]$ /usr/bin/java: symbol lookup error:

/usr/lib/eclipse/configuration/org.eclipse.osgi/bundles/6/1/.cp/libswt-mozilla-gtk-3235.so:
 undefined symbol: _ZN4nsID5ParseEPKcbrbrwith the
eclipse logo
 stuck on my screen, and produces a pop-up display with the
 following:brbrJVM terminated. Exit

code=127br/usr/bin/javabr-Xms40mbr-Xmx256mbr-Dosgi.sharedConfiguration.area=/usr/lib/eclipse/configurationbr-jar
 /usr/share/eclipse/startup.jarbr-os linuxbr-ws
 gtkbr-arch x86br-launcher
  /usr/bin/eclipsebr-name
 Eclipsebr-showsplash 600br-exitdata
23802abr-vm
 

/usr/bin/javabr-vmargsbr-Xms40mbr-Xmx256mbr-Dosgi.sharedConfiguration.area=/usr/lib/eclipse/configurationbr-jar
 /usr/share/eclipse/startup.jar brbrI am running SL 5.0
on an HP
 Pavilion 5000 laptop:br[...@hpsl5 programmingEnvironments]$
uname
 -abrLinux hpsl5 2.6.18-128.1.6.el5xen #1 SMP Wed Apr 1
07:49:37

Re: problems getting eclipse to run on SL5.0

[William Shu]

Is there a possibility to updating eclipse to that in SL5.2 without upgrading 
Scientific Linux to 5.2? In which case, how?

If not, the trouble is that I am mostly using the laptop (SL 5.0) and my 
desktops are also SL5.0 and Redhat 9.0;  someone else tends to use the desktop 
(SL5.2). I dare not upgrade the laptop because that would break other software 
I cannot yet afford to tinker with!

William.

--- On Mon, 5/11/09, Connie Sieh cs...@fnal.gov wrote:
From: Connie Sieh cs...@fnal.gov
Subject: Re: problems getting eclipse to run on SL5.0
To: William Shu ws...@yahoo.com
Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
Date: Monday, May 11, 2009, 10:03 PM


On Mon, 11 May 2009, William Shu wrote:

 --Boundary_(ID_GLiIs2tSNRJu+7tp3/7zpw)
 Content-type: text/plain; charset=us-ascii

 Hi Troy,
 I am using SL 5.0 on the machine (laptop). Barring inadvertency, it has
always been updated with yum/yumex from SL sites/mirrors. I also have the same
problem with an SL 5.0 desktop, but not with an SL5.2 desktop.

Since the eclipse on SL 5.2 works I suggest you use that.

-connie sieh

 The requested output is:

 [...@hpsl5 ~]$ rpm -qa | grep eclipse |sort
 eclipse-cdt-3.1.2-8.el5.i386
 eclipse-cdt-sdk-3.1.2-8.el5.i386
 eclipse-checkstyle-4.0.1-6.el5.i386
 eclipse-ecj-3.2.1-18.el5.i386
 eclipse-jdt-3.2.1-18.el5.i386
 eclipse-jdt-sdk-3.2.1-18.el5.i386
 eclipse-pde-3.2.1-18.el5.i386
 eclipse-pde-runtime-3.2.1-18.el5.i386
 eclipse-platform-3.2.1-18.el5.i386
 eclipse-platform-sdk-3.2.1-18.el5.i386
 eclipse-rcp-3.2.1-18.el5.i386
 eclipse-rcp-sdk-3.2.1-18.el5.i386
 [...@hpsl5 ~]$

 William.


 --- On Mon, 5/11/09, Troy Dawson daw...@fnal.gov wrote:
 From: Troy Dawson daw...@fnal.gov
 Subject: Re: problems getting eclipse to run on SL5.0
 To: ws...@yahoo.com ws...@yahoo.com
 Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
 Date: Monday, May 11, 2009, 8:48 PM

 That is the same version of jdk that I am running, and Eclipse comes up
fine.
 Are you using Eclipse from SL, or downloaded from somewhere?
 Can you give the output of
  rpm -qa | grep eclipse | sort

 Troy

 William Shu wrote:
 Dear Connie,
 The version of java is given as in the command below:
 [...@hpsl5 ~]$ java -version
 java version 1.6.0_13
 Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
 Java HotSpot(TM) Client VM (build 11.3-b02, mixed mode, sharing)
 [...@hpsl5 ~]$

 William.

 --- On *Mon, 5/11/09, Connie Sieh /cs...@fnal.gov/* wrote:

 From: Connie Sieh cs...@fnal.gov
 Subject: Re: problems getting eclipse to run on SL5.0
 To: William Shu ws...@yahoo.com
 Cc: SCIENTIFIC-LINUX-USERS@listserv.fnal.gov
 Date: Monday, May 11, 2009, 6:25 PM

 Which java is this?

 -Connie Sieh

 On Sat, 9 May 2009, William Shu wrote:

 --Boundary_(ID_tR8ZFhtkJ5pnkuN4BLNX5Q)
 Content-type:
  text/plain; charset=us-ascii

 Can anyone help?

 In order to learn how to use eclipse, I try running the
eclipse
 program
 for the first time and get the error message:
 [...@hpsl5 programmingEnvironments]$ eclipse 
 [2] 9568
 [...@hpsl5 programmingEnvironments]$ /usr/bin/java: symbol
lookup
 error:


/usr/lib/eclipse/configuration/org.eclipse.osgi/bundles/6/1/.cp/libswt-mozilla-gtk-3235.so:
 undefined symbol: _ZN4nsID5ParseEPKc

 with the eclipse logo stuck on my screen, and produces a
pop-up
 display
 with the following:

 JVM terminated. Exit code=127
 /usr/bin/java
 -Xms40m
 -Xmx256m
 -Dosgi.sharedConfiguration.area=/usr/lib/eclipse/configuration
 -jar /usr/share/eclipse/startup.jar
 -os linux
 -ws gtk
 -arch x86
 -launcher /usr/bin/eclipse
 -name Eclipse
 -showsplash 600

  -exitdata 23802a
 -vm /usr/bin/java
 -vmargs
 -Xms40m
 -Xmx256m
 -Dosgi.sharedConfiguration.area=/usr/lib/eclipse/configuration
 -jar /usr/share/eclipse/startup.jar

 I am running SL 5.0 on an HP Pavilion 5000 laptop:
 [...@hpsl5 programmingEnvironments]$ uname -a
 Linux hpsl5 2.6.18-128.1.6.el5xen #1 SMP Wed Apr 1 07:49:37
EDT
 2009 i686
 i686 i386 GNU/Linux
 [...@hpsl5 programmingEnvironments]$


 Not sure if its the laptop, but it seems general/ 3rd party
 software which
 install/run without problems on other machines (with SL 5.2
installed)
 seem to
 unexpectedly crash on this one.

 William.





 --Boundary_(ID_tR8ZFhtkJ5pnkuN4BLNX5Q)
 Content-type: text/html; charset=us-ascii

 table cellspacing=0 cellpadding=0
 border=0 trtd
  valign=top
 style=font: inherit;Can anyone
 help?brbrIn order
 to learn how to use eclipse, I try running the eclipse program for
the
 first
 time and get the error message:br[...@hpsl5
 programmingEnvironments]$
 eclipse amp;br[2] 9568br[...@hpsl5
 programmingEnvironments]$ /usr/bin/java: symbol lookup error:


/usr/lib/eclipse/configuration

Latest kernel update cripples NetworkManager?

[William Shu]

Hi,
Has anyone noticed this? It looks like the latest kernel update has crippled 
NetworkManager! It does not even see wireless network,(using Intel(R) 
PRO/Wireless 3945 Network Connection driver), and gives the following message 
when I try to activate it manually:

Error for wireless request Set Mode (8B06) :
    SET failed on device eth1 ; No such device.
Error for wireless request Set Frequency (8B04) :
    SET failed on device eth1 ; No such device.
Error for wireless request Set Bit Rate (8B20) :
    SET failed on device eth1 ; No such device.
Error for wireless request Set Encode (8B2A) :
    SET failed on device eth1 ; No such device.
SIOCGIFFLAGS: No such device
Failed to bring up eth1.

System detail:

[...@hpsl5 ~]$ uname -a
Linux hpsl5 2.6.18-128.1.10.el5xen #1 SMP Thu May 7 13:38:34 EDT 2009 i686 i686 
i386 GNU/Linux
[...@hpsl5 ~]$ 

I use iwl3945 driver, though the system also downloadeds some kernel*ipw3945 
bit (from dependencies).

William.




  

Re: Problems using X Windows Display

[William Shu]

Dear All,
I think I now have a clearer approach to finding solutions to some of my 
problems. the suggestions of Stephen, Troy and Miles were particularly helpful.

First, the the solutions obtained so far:
enabling Xforwarding and restarting daemons (e.g., sshd) permits me to have 
trouble-free displays over ssh or from xterm windows of different users on the 
same console.

From the help offered, I think my solution strategy for multi-terminal display 
could be one of the following:
1) Bring up vnc display, have a master vnc viewer that can read/write on the 
display, and let all the other vnc viewers be slave vnc viewers that can only 
view the display. Unfortunately, blocking keyboard/mouse actions using the 
options menu from pressing the F8 key can be reset by the user.  An suggestions 
to configure vnc to have such master-slave viewers?

2) Create a separate account, which can possibly become insecure by granting 
xauth authorities, and use vnc to display whatever. While the implications of 
extending access (via xauth) frighten, the use of a video conferencing tool, 
such as EVO, seem to require internet access, whereas the machines I'll use are 
in a closed LAN. Does anyone know of a video conferencing tool that does not 
register to/through the internet?

Once more thank you all for the support.

William.


--- On Tue, 5/5/09, Stephen J. Gowdy go...@cern.ch wrote:
From: Stephen J. Gowdy go...@cern.ch
Subject: Re: Problems using X Windows Display
To: William Shu ws...@yahoo.com
Cc: Miles O'Neal m...@intrinsity.com, scientific-linux-us...@fnal.gov
Date: Tuesday, May 5, 2009, 7:44 AM

On Mon, 4 May 2009, William Shu wrote:

 
 Thank you very much Miles!
 
 I rebooted both machines and I can now view pdf/ *.ps files without
complaints!
 
 vncviewer now opens on the host machine when invoked from the remote
machine through ssh. However, I have the following three problems (whose
solutions I guess will help end this thread):
 
 1) Everything has suddenly become so slow on the host machine (I think);
shortly after opening the vnc window seems to freeze, not displaying X clients,
though the window itself can be reduced or expanded!

Sorry, no idea there.

 2) Trying to open vnc without ssh complains of no route to host (error
113). Also, xclock complains of inability to open display.

This is probably your firewall preventing access as I mentinoed. Looking at it
I think you need to open 5901 on your server. I've never used though so
I'm not sure.

 3) Related to (2) above, it seems I can only project X disply on another
terminal through ssh, which requires login (and hence knowing another user's
password). Is there no other secure way of doing this, where the target user can
selectively authorise the display?

Each user could have an account on the host machine that is different.
They'd all need to know the shared password for the VNC server though.
Probably not a good idea.

You can use xauth as described before to allow a user to do everything with
your X session either via an ssh tunnel or directly if you open port 6000
(assuming your display is :0) on your firewall. However, something like EVO
would be a much safer way to share a desktop window. There are probably other
applications that would do it too.

 
 The following outputs show what transpired:
 
 [...@hpsl5 ~]$ ssh -XY w...@192.168.10.20
 w...@192.168.10.20's password:
 Last login: Tue May  5 02:57:19 2009
 [...@inteksl52 ~]$ echo $DISPLAY
 localhost:10.0
 [1]+  Done    evince
Desktop/semanticKnowledge-a4-geissler.pdf
 [...@inteksl52 ~]$ vncviewer 
 [1] 6612
 [...@inteksl52 ~]$
 VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
 Copyright (C) 2002-2005 RealVNC Ltd.
 See http://www.realvnc.com for information on VNC.
 
 Tue May  5 03:08:35 2009
  CConn:   connected to host localhost port 5901
  CConnection: Server supports RFB protocol version 3.8
  CConnection: Using RFB protocol version 3.8
 
 Tue May  5 03:08:54 2009
  TXImage: Using default colormap and visual, TrueColor, depth 24.
  CConn:   Using pixel format depth 6 (8bpp) rgb222
  CConn:   Using ZRLE encoding
 
 Tue May  5 03:18:27 2009
  main:    End of stream
 
 [1]+  Done    vncviewer
 [...@inteksl52 ~]$
 
 ... snip ...
 
 [...@hpsl5 ~]$ vncviewer 192.168.10.20:1 
 [1] 3888
 [...@hpsl5 ~]$
 VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
 Copyright (C) 2002-2005 RealVNC Ltd.
 See http://www.realvnc.com for information on VNC.
 
 Tue May  5 03:38:32 2009
  main:    unable to connect to host: No route to host (113)
 
 [1]+  Exit 1  vncviewer 192.168.10.20:1
 [...@hpsl5 ~]$
 [...@hpsl5 ~]$ xclock -display 192.168.10.20:1 
 [1] 5564
 [...@hpsl5 ~]$ Error: Can't open display: 192.168.10.20:1
 
 --- On Tue, 5/5/09, Miles O'Neal m...@intrinsity.com wrote:
 From: Miles O'Neal m...@intrinsity.com
 Subject: Re: Problems using X Windows Display
 To: ws...@yahoo.com
 Date: Tuesday, May 5

Re: Problems using X Windows Display

[William Shu]

Thank you for all the suggestions. I have tried to make modifications as 
suggested on ISSUE 1, while trying to use vnc as my test case. No success yet. 
Grateful for further suggestions.


Xforwarding:

Changed the Xforwarding to yes in /etc/ssh/sshd_config of remote machine 
(inteksl52):

#X11Forwarding no
X11Forwarding yes

the client machine was already set (barring any surprise in changed notation):

Host *
    ForwardX11Trusted yes
    ForwardX11 yes

Host *.fnal.gov
    GSSAPIAuthentication yes
    GSSAPIDelegateCredentials yes
    ForwardX11Trusted yes
    ForwardX11 yes


xauth and $DISPLAY:
---
I have also checked for xauth and $DISPLAY on both machines.
On host machine (hpsl5): xauth is available and DISPLAY is set to :0.0
[...@hpsl5 ~]$ rpm -q xorg-x11-xauth
xorg-x11-xauth-1.0.1-2.1.i386
[...@hpsl5 ~]$ echo $DISPLAY
:0.0
[...@hpsl5 ~]$ 


On remote machine (inteksl52): xauth is available but DISPLAY is *not* set via 
secure shell.  However, it is set to :0.0 if echoed from its own console.
[...@hpsl5 ~]$ ssh -XY w...@192.168.10.20
w...@192.168.10.20's password: 
Last login: Mon May  4 18:08:12 2009 from 192.168.10.4
[...@inteksl52 ~]$ echo $DISPLAY

[...@inteksl52 ~]$  rpm -q xorg-x11-xauth
xorg-x11-xauth-1.0.1-2.1.i386
[...@inteksl52 ~]$ 


vnc connection:
---
vncviewer sees the vncserver if they are on the same host machine,but not 
accross machines or remotely (via ssh); it basically demonstrates the problem 
persists.

On host machine:

[...@hpsl5 ~]$ echo $DISPLAY
:0.0
[...@hpsl5 ~]$ vncserver 
[1] 5300
New 'hpsl5:2 (wss)' desktop is hpsl5:2

Starting applications specified in /home/wss/.vnc/xstartup
Log file is /home/wss/.vnc/hpsl5:2.log


[1]+  Done    vncserver
[...@hpsl5 ~]$ 




On remote machine (via ssh) the vnc server is activated, but the viewer seems 
to have the following behaviour:
    * for DISPLAY=:2.0, it seems to just hang
    * for DISPLAY=192.168.10.4:1.0 (host vnc), viewer cannot open the display
    * for DISPLAY=192.168.10.20.1.0 (remote vnc, using its IP), it further 
indicates refusal by server. 

sample scenario:

[...@inteksl52 ~]$ vncserver

New 'inteksl52:2 (wss)' desktop is inteksl52:2

Starting applications specified in /home/wss/.vnc/xstartup
Log file is /home/wss/.vnc/inteksl52:2.log

[...@inteksl52 ~]$ 
[...@inteksl52 ~]$ echo $DISPLAY

[...@inteksl52 ~]$ export DISPLAY=:2.0
[...@inteksl52 ~]$ vncviewer 
[1] 9162
[...@inteksl52 ~]$ 
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.


[...@inteksl52 ~]$ echo $DISPLAY
 
[...@inteksl52 ~]$ export DISPLAY=192.168.10.4:1.0
[...@inteksl52 ~]$ echo $DISPLAY
192.168.10.4:1.0
[...@inteksl52 ~]$ vncviewer 
[1] 9528
[...@inteksl52 ~]$ 
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
vncviewer: unable to open display 192.168.10.4:1.0

[1]+  Exit 1  vncviewer
[...@inteksl52 ~]$ 
[...@inteksl52 ~]$ export DISPLAY=192.168.10.20:1.0
[...@inteksl52 ~]$ vncviewer 
[1] 9537
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.
Xlib: connection to 192.168.10.20:1.0 refused by server
Xlib: No protocol specified

vncviewer: unable to open display 192.168.10.20:1.0

[1]+  Exit 1  vncviewer
[...@inteksl52 ~]$ 



--- On Mon, 5/4/09, Troy Dawson daw...@fnal.gov wrote:
From: Troy Dawson daw...@fnal.gov
Subject: Re: Problems using X Windows Display
To: William Shu ws...@yahoo.com
Cc: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Date: Monday, May 4, 2009, 4:21 PM

Hi,
I'll just add a little to what Stephen said.  Focus on getting #1 to 
work, which is to log into a remote machine and open a graphical window.

It looks like you have all the right options on your client end, but you 
also have to have it enabled on the machine you are logging into.
On the machine you are logging into, look at your /etc/ssh/sshd_config 
and look for the line X11Forwarding, and make sure it is yes, like so

X11Forwarding yes

You also have to make sure that xauth is installed.  It is on most every 
machine that has X installed, but if you start with a stripped down 
server, sometimes you don't get xauth.  To check (on SL5) just do

rpm -q xorg-x11-xauth

Also, for me, when I check to see what my display setting is, I always do

echo $DISPLAY

And it should come back something like

localhost:10.0

That is because it's doing an ssh tunnel, so it thinks it's the
localhost.

Hope this helps
Troy

Stephen J. Gowdy wrote:
 Hi William,
   X displays usually are setup to enforce some sort of security. 
 Otherwise anyone would be able to read your password.
   In case 1, was DISPLAY set on hpsl5 before you typed ssh

Re: Problems using X Windows Display

[William Shu]

Thank you very much Miles!

I rebooted both machines and I can now view pdf/ *.ps files without complaints! 

vncviewer now opens on the host machine when invoked from the remote machine 
through ssh. However, I have the following three problems (whose solutions I 
guess will help end this thread):

1) Everything has suddenly become so slow on the host machine (I think); 
shortly after opening the vnc window seems to freeze, not displaying X clients, 
though the window itself can be reduced or expanded!

2) Trying to open vnc without ssh complains of no route to host (error 113). 
Also, xclock complains of inability to open display.

3) Related to (2) above, it seems I can only project X disply on another 
terminal through ssh, which requires login (and hence knowing another user's 
password). Is there no other secure way of doing this, where the target user 
can selectively authorise the display?


The following outputs show what transpired:

[...@hpsl5 ~]$ ssh -XY w...@192.168.10.20
w...@192.168.10.20's password: 
Last login: Tue May  5 02:57:19 2009
[...@inteksl52 ~]$ echo $DISPLAY
localhost:10.0
[1]+  Done    evince Desktop/semanticKnowledge-a4-geissler.pdf
[...@inteksl52 ~]$ vncviewer 
[1] 6612
[...@inteksl52 ~]$ 
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Tue May  5 03:08:35 2009
 CConn:   connected to host localhost port 5901
 CConnection: Server supports RFB protocol version 3.8
 CConnection: Using RFB protocol version 3.8

Tue May  5 03:08:54 2009
 TXImage: Using default colormap and visual, TrueColor, depth 24.
 CConn:   Using pixel format depth 6 (8bpp) rgb222
 CConn:   Using ZRLE encoding

Tue May  5 03:18:27 2009
 main:    End of stream

[1]+  Done    vncviewer
[...@inteksl52 ~]$

... snip ...

[...@hpsl5 ~]$ vncviewer 192.168.10.20:1 
[1] 3888
[...@hpsl5 ~]$ 
VNC Viewer Free Edition 4.1.2 for X - built Feb 11 2009 12:55:24
Copyright (C) 2002-2005 RealVNC Ltd.
See http://www.realvnc.com for information on VNC.

Tue May  5 03:38:32 2009
 main:    unable to connect to host: No route to host (113)

[1]+  Exit 1  vncviewer 192.168.10.20:1
[...@hpsl5 ~]$ 
[...@hpsl5 ~]$ xclock -display 192.168.10.20:1 
[1] 5564
[...@hpsl5 ~]$ Error: Can't open display: 192.168.10.20:1

--- On Tue, 5/5/09, Miles O'Neal m...@intrinsity.com wrote:
From: Miles O'Neal m...@intrinsity.com
Subject: Re: Problems using X Windows Display
To: ws...@yahoo.com
Date: Tuesday, May 5, 2009, 1:02 AM

William Shu said...

|Xforwarding:
|
|Changed the Xforwarding to yes in /etc/ssh/sshd_config of remote mach=
|ine (inteksl52):
|
|#X11Forwarding no
|X11Forwarding yes

Did you restart the ssh daemon after that change?




  

Problems using X Windows Display

[William Shu]

I am having difficulties related to X Windowing system. Being a novice and 
basically overwhelmed by the X.org documentation. I present below the separate 
but related issues which can be summarised as: (1) displaying files from remote 
machines, possibly over secure shell; (2) projecting a window or entire screen 
onto *multiple* remote displays (monitors); and (3) using the same display when 
logged on as distinct users in xterm windows.

In the example, I am on the host machine is hpsl5 (IP: 192.168.10.4) running 
SL5.0 and the remote machine is inteksl52 (192.168.10.20) running SL 5.2.

Any assistance would be appreciated.




 ISSUE 1 =

Displaying *.pdf *.ps files from a remote machine using secure shell ssh -XY, 
whereas it used to work (in the distant past). I get the message: Unable to 
open the diplay .

Even trying to open a specific display (192.168.10.4:0, on tinysl5) with the 
xlsfonts command, I still get the message Unable to open the diplay.

Unfortunately, I do not have a very clear idea how X works; the manpage X(7) is 
not too helpful, and dmesg does not issue any messages.

Example output:

[...@hpsl5 ~]$ ssh -XY w...@192.168.10.20
w...@192.168.10.20's password: 
Last login: Fri May  1 00:45:23 2009 from 192.168.10.4
[...@inteksl52 ~]$ printenv |grep -ie display
[...@inteksl52 ~]$ dir *.ps
tsi.comp.POST.SENT-13032007_pages25_26.ps
[...@inteksl52 ~]$ gv tsi.comp.POST.SENT-13032007_pages25_26.ps 
[1] 23151
[...@inteksl52 ~]$ gv: Unable to open the display.


[...@inteksl52 ~]$ 
[...@inteksl52 ~]$ xlsfonts -fn '-*-*-*-*-*-*-0-0-0-0-*-0-*-*'
xlsfonts:  unable to open display ''
usage:  xlsfonts [-options] [-fn pattern]
where options include:
    -l[l[l]] give long info about each font
    -m   give character min and max bounds
    -C   force columns
    -1   force single column
    -u   keep output unsorted
    -o   use OpenFont/QueryFont instead of ListFonts
    -w width maximum width for multiple columns
    -n columns   number of columns if multi column
    -display displayname X server to contact
    -d displayname   (alias for -display displayname)

[...@inteksl52 ~]$ 
[...@inteksl52 ~]$ 
[...@inteksl52 ~]$ xlsfonts -d 192.168.10.4:0.0 -fn 
'-*-*-*-*-*-*-0-0-0-0-*-0-*-*'
xlsfonts:  unable to open display '192.168.10.4:0.0'
usage:  xlsfonts [-options] [-fn pattern]
where options include:
    -l[l[l]] give long info about each font
    -m   give character min and max bounds
    -C   force columns
    -1   force single column
    -u   keep output unsorted
    -o   use OpenFont/QueryFont instead of ListFonts
    -w width maximum width for multiple columns
    -n columns   number of columns if multi column
    -display displayname X server to contact
    -d displayname   (alias for -display displayname)






 ISSUE 2 =


How can I display a given window (xterm, pdf file, etc.) on a number of remote 
terminal? For exmple, I would want that the pdf file I am scrolling through is 
also visible to my remote audience on their screens.

This is probably related to ISSUE 1.






 ISSUE 3 =

How can I be logged in as 2 distinct users (e.g., wss and wsshu or root) in 
terminal windows and still be able to view files *.pdf and *.ps files or choose 
my X windows display? On some machines, I I can view the files, possibly with 
some complaints, but fails on others, complaining about being unable to open 
display. (Unfortunately I cannot reproduce the failure on this machine, in what 
is given below.) Xnest does not seem to permit it. How can I go about this?

Example output:

[...@hpsl5 ~]$ Xnest :1


[1]+  Stopped Xnest :1
[...@hpsl5 ~]$ bg
[1]+ Xnest :1 
[...@hpsl5 ~]$ xterm -display :1
AUDIT: Mon May  4 01:59:19 2009: 27279 Xnest: client 1 rejected from local host
Xlib: connection to :1.0 refused by server
Xlib: No protocol specified

xterm Xt error: Can't open display: :1
[...@hpsl5 ~]$ su
Password: 
[r...@hpsl5 wss]# xterm -display :1
AUDIT: Mon May  4 02:00:23 2009: 27279 Xnest: client 1 rejected from local host
Xlib: connection to :1.0 refused by server
Xlib: No protocol specified

Warning: This program is an suid-root program or is being run by the root user.
The full text of the error or warning message cannot be safely formatted
in this environment. You may get a more descriptive message by running the
program as a non-root user or by removing the suid bit on the executable.
xterm Xt error: Can't open display: %s
[r...@hpsl5 wss]# exit
exit
[...@hpsl5 ~]$ su wsshu
Password: 
[ws...@hpsl5 wss]$ xterm -display :1

Re: problems with iwl3945 wireless connection properties

[William Shu]

Hi,
[Sorry replying this late -- I preferred to upgrade NetworkManager but the 
laptop's network (wired and wireless) was dysfunctional.]

First, I'm glad to say the update to NetworkManager and wpa_supplicant are 
great! wireless device is detected and I can use WPA-PSK encryption! [For 
information, the suggestion from Markus to try suggestions on: 
https://qa.mandriva.com/show_bug.cgi?id=45062#c48 did not work in my case; 
then, I could only use fixed IP's, not dhcp, to see the router]

However, TWO problems remain and I'd be grateful for assistance:


==[ PROBLEM 1 ]

I seem to loose conversion of domain name services to IP address. 

The prior update of NetworkManager (or whatever) created a wired connection 
that I cannot edit or delete (called System eth0). NetworkManager connects to 
System eth0 on boot, and goes back to it at random intervals when I manually 
change the device.

Through System eth0,  I can ping to IP addresses but not to host names, and 
also seems to connect on a random basis, making upgrades and internet access a 
pain.

How can I get rid of system eth0, and still maintain a functioning network?

[...@hpsl5 ~]$ ping -c10 209.212.96.1
PING 209.212.96.1 (209.212.96.1) 56(84) bytes of data.
64 bytes from 209.212.96.1: icmp_seq=1 ttl=59 time=324 ms
64 bytes from 209.212.96.1: icmp_seq=2 ttl=59 time=300 ms
64 bytes from 209.212.96.1: icmp_seq=3 ttl=59 time=299 ms

--- 209.212.96.1 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1998ms
rtt min/avg/max/mdev = 299.876/38.548/324.843/11.538 ms
[...@hpsl5 ~]$ ping -c10 www.google.com
ping: unknown host www.google.com
[...@hpsl5 ~]$ ping -c10 www.google.com
ping: unknown host www.google.com



==[ PROBLEM 2 ]
The error asking to contact system administrator persists.

The warning message from iwconfig below could very possible that this is the 
reason for the icon being unable to provide statistics.


If that is ithe case, how can this be updated? (I have done all the wireless 
updates available for SL).

The message follows:


[...@hpsl5 ~]$ /sbin/iwconfig eth1
Warning: Driver for device eth1 recommend version 21 of Wireless Extension,
but has been compiled with version 20, therefore some driver features
may not be available...

eth1  IEEE 802.11  ESSID:doit1wlan  
  Mode:Managed  Frequency:2.437 GHz  Access Point: 00:18:E7:01:64:AF   
  Bit Rate=54 Mb/s   Tx-Power=15 dBm   
  Retry min limit:7   RTS thr:off   Fragment thr=2352 B   
  Link Quality=86/100  Signal level=-47 dBm  Noise level=-127 dBm
  Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
  Tx excessive retries:0 r Invalid misc:0   Missed beacon:0

[...@hpsl5 ~]$ 


Just in case it would help, may I indicate that I first noticed the problem 
after I dabbled in installing the driver for webcams on linux:
    gspcav1-kmdl-2.6.18-128.1.1.el5xen

and its dependency packages:

    ieee80211-kmdl-2.6.18-128.1.1.el5xen

which seem to conflict with ipw3945 with messages (taken from dmesg at the 
time) like:
ieee80211_crypt: registered algorithm 'NULL'
e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
e100: Copyright(c) 1999-2005 Intel Corporation
ACPI: PCI Interrupt :08:08.0[A] - GSI 20 (level, low) - IRQ 21
e100: eth0: e100_probe: addr 0xd0006000, irq 21, MAC addr 00:16:D4:3A:20:40
ieee80211: 802.11 data/management/control stack, 1.2.18
ieee80211: Copyright (C) 2004-2005 Intel Corporation jketr...@linux.intel.com
ipw3945: disagrees about version of symbol ieee80211_wx_get_encodeext
ipw3945: Unknown symbol ieee80211_wx_get_encodeext

(I had all ipw* packages removed but the problem persisted. This too was the 
case even when I upgraded the kernel to 2.6.18-128.1.6.el5xen but not the 
corresponding gspca* and ieee*, which seem to install the ipw3945* packages).


Regards,

William.


--- On Mon, 4/13/09, Troy Dawson daw...@fnal.gov wrote:

From: Troy Dawson daw...@fnal.gov
Subject: Re: problems with iwl3945 wireless connection properties
To: ws...@yahoo.com ws...@yahoo.com
Cc: scientific-linux-us...@fnal.gov scientific-linux-us...@fnal.gov
Date: Monday, April 13, 2009, 2:44 PM

Hi,
The new, updated wpa_support will be going out today, for SL50, 51, and 52. 
That (as far as I've tested) doesn't have any side effects.  I'm still testing 
the updated udev, which seems to also be needed.

Although that error about contacting your system administrator is new, I 
haven't seen that one.

Troy

William Shu wrote:
 Hi,
 Can I also conclude that the iwl3945 is also broke for my Intel PRO/Wireless 
 3945ABG/BG Network Connection? (I have been closely following the thread 
 with subject atheros wifi connect problem and its leads in the hope that it 
 can solve mine.) Things have gotten worse as the updated network manager 
 (NetworkManager-0.7.0-4.el5_3.src.rpm) cannot detect wireless connection, and 
 I have to activate the device manually

Re: problems with iwl3945 wireless connection properties

[William Shu]

Hi,
Can I also conclude that the iwl3945 is also broke for my Intel PRO/Wireless 
3945ABG/BG Network Connection? (I have been closely following the thread with 
subject atheros wifi connect problem and its leads in the hope that it can 
solve mine.) Things have gotten worse as the updated network manager 
(NetworkManager-0.7.0-4.el5_3.src.rpm) cannot detect wireless connection, and I 
have to activate the device manually!

I still get the message: 
 Error for wireless request Set Mode (8B06) :
    SET failed on device eth1 ; Invalid argument.
when I manually activate the wireless device (on eth1)

Also, when I click on the icon for the eth1 (wireless) connection properties, I 
still get the error message:
 Please contact your system administrator to resolve the following problem:

Could not parse interface statistics from '  eth1'. prx_idx = 1; ptx_idx = 9; 
brx_idx = 0; btx_idx = 8;

Furthermore, wpa_supplicant does not work and produces the same error messages 
(essentially) to those presented in the above-cited atheros thread.

I would greatly appreciate any assistance or leads. Please assistance should 
not involve changing the stock SL kernel as other programs will not work.

I laptop runs SL 5.0
[...@hpsl5 ~]$ uname -a
    Linux hpsl5 2.6.18-128.1.1.el5xen #1 SMP Tue Feb 10 12:27:46 EST 2009 i686 
i686 i386 GNU/Linux


William.

--- On Thu, 3/26/09, William Shu ws...@yahoo.com wrote:
From: William Shu ws...@yahoo.com
Subject: problems with iwl3945 wireless connection properties
To: scientific-linux-us...@fnal.gov
Cc: ws...@yahoo.com
Date: Thursday, March 26, 2009, 12:06 PM

Hi,
Does anyone have some experience in dealing with statistics errors deriving 
from the Intel PRO/Wireless 3945ABG/BG Network Connection?

Secondly, I do not know from where ipw3945 is coming from (in dmesg), since I 
disabled the ipw3945d daemon. Could this be a problem?



I describe the scenario below.

I have an hp laptop running SL 5.0

    [...@hpsl5 ~]$ uname -a
    Linux hpsl5 2.6.18-128.1.1.el5xen #1 SMP Tue Feb 10 12:27:46 EST 2009 i686 
i686 i386 GNU/Linux

which has the Intel PRO/Wireless 3945ABG/BG Network Connection linked to the 
eth1 device, that I had setup using the ipw3945d daemon. (ipw3945d does not 
permit wpa-psk but in the interim I use WEP protocol)

Things started happening when I installed the gspcav1-*.rpm from the atrpms 
repository and it installed the
 package ieee80211-kmdl-2.6.18-128.1.1.el5xen*, amongst others, for dependency. 
I also had to install some iwl*3945* package which introduced some clashes.

I lost network connection, until, after trial and error, I installed the 
corresponding package, iwlwifi-3945.ucode, from sl-security and disabled the 
ipw3945 daemon from network services. (I then regained wireless connectivity, 
but do not know yet if there are other problems.)

However, when I click on the icon for the eth1 (wireless) connection 
properties, I get the error message:
 Please contact your system administrator to resolve the following problem:

Could not parse interface statistics from '  eth1'. prx_idx = 1; ptx_idx = 9; 
brx_idx = 0; btx_idx = 8;

Unfortunately, I am my own systems administrator, and do not know how to go 
about this. From past mail, I visited the
 sites

http://www.intellinuxwireless.org/?p=iwlwifin=howto-iwlwifi
http://www.intellinuxwireless.org/tar.php?p=iwlwifia=iwlwifi-1.2.25.tgzf=INSTALL
but could not still figure things out! The introduce devices such as wlan0 
which are not found un my machine.

Looking at dmesg, some of the relevant messages seem to be (bits snipped out):

[...@hpsl5 ~]$ dmesg | tail -400 | less
..snip..
Bluetooth: HCI USB driver ver 2.9
usbcore: registered new driver hci_usb
ieee80211_crypt: registered algorithm 'NULL'
e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
e100: Copyright(c) 1999-2005 Intel Corporation
ACPI: PCI Interrupt :08:08.0[A] - GSI 20 (level, low) - IRQ 21
e100: eth0: e100_probe: addr 0xd0006000, irq 21, MAC addr 00:16:D4:3A:20:40
ieee80211: 802.11 data/management/control stack, 1.2.18
ieee80211: Copyright (C) 2004-2005 Intel Corporation
 jketr...@linux.intel.com
ipw3945: disagrees about version of symbol ieee80211_wx_get_encodeext
ipw3945: Unknown symbol ieee80211_wx_get_encodeext
ipw3945: disagrees about version of symbol ieee80211_wx_set_encode
ipw3945: Unknown symbol ieee80211_wx_set_encode
ipw3945: disagrees about version of symbol ieee80211_wx_get_encode
ipw3945: Unknown symbol ieee80211_wx_get_encode
ipw3945: disagrees about version of symbol ieee80211_txb_free
ipw3945: Unknown symbol ieee80211_txb_free
ipw3945: disagrees about version of symbol ieee80211_wx_set_encodeext
ipw3945: Unknown symbol ieee80211_wx_set_encodeext
ipw3945: disagrees about version of symbol ieee80211_wx_get_scan
ipw3945: Unknown symbol ieee80211_wx_get_scan
ipw3945: disagrees about version of symbol ieee80211_freq_to_channel
ipw3945: Unknown symbol ieee80211_freq_to_channel
ipw3945: disagrees about version of symbol

problems with iwl3945 wireless connection properties

[William Shu]

Hi,
Does anyone have some experience in dealing with statistics errors deriving 
from the Intel PRO/Wireless 3945ABG/BG Network Connection?

Secondly, I do not know from where ipw3945 is coming from (in dmesg), since I 
disabled the ipw3945d daemon. Could this be a problem?



I describe the scenario below.

I have an hp laptop running SL 5.0

    [...@hpsl5 ~]$ uname -a
    Linux hpsl5 2.6.18-128.1.1.el5xen #1 SMP Tue Feb 10 12:27:46 EST 2009 i686 
i686 i386 GNU/Linux

which has the Intel PRO/Wireless 3945ABG/BG Network Connection linked to the 
eth1 device, that I had setup using the ipw3945d daemon. (ipw3945d does not 
permit wpa-psk but in the interim I use WEP protocol)

Things started happening when I installed the gspcav1-*.rpm from the atrpms 
repository and it installed the package ieee80211-kmdl-2.6.18-128.1.1.el5xen*, 
amongst others, for dependency. I also had to install some iwl*3945* package 
which introduced some clashes.

I lost network connection, until, after trial and error, I installed the 
corresponding package, iwlwifi-3945.ucode, from sl-security and disabled the 
ipw3945 daemon from network services. (I then regained wireless connectivity, 
but do not know yet if there are other problems.)

However, when I click on the icon for the eth1 (wireless) connection 
properties, I get the error message:
 Please contact your system administrator to resolve the following problem:

Could not parse interface statistics from '  eth1'. prx_idx = 1; ptx_idx = 9; 
brx_idx = 0; btx_idx = 8;

Unfortunately, I am my own systems administrator, and do not know how to go 
about this. From past mail, I visited the sites

http://www.intellinuxwireless.org/?p=iwlwifin=howto-iwlwifi
http://www.intellinuxwireless.org/tar.php?p=iwlwifia=iwlwifi-1.2.25.tgzf=INSTALL
but could not still figure things out! The introduce devices such as wlan0 
which are not found un my machine.

Looking at dmesg, some of the relevant messages seem to be (bits snipped out):

[...@hpsl5 ~]$ dmesg | tail -400 | less
..snip..
Bluetooth: HCI USB driver ver 2.9
usbcore: registered new driver hci_usb
ieee80211_crypt: registered algorithm 'NULL'
e100: Intel(R) PRO/100 Network Driver, 3.5.10-k2-NAPI
e100: Copyright(c) 1999-2005 Intel Corporation
ACPI: PCI Interrupt :08:08.0[A] - GSI 20 (level, low) - IRQ 21
e100: eth0: e100_probe: addr 0xd0006000, irq 21, MAC addr 00:16:D4:3A:20:40
ieee80211: 802.11 data/management/control stack, 1.2.18
ieee80211: Copyright (C) 2004-2005 Intel Corporation jketr...@linux.intel.com
ipw3945: disagrees about version of symbol ieee80211_wx_get_encodeext
ipw3945: Unknown symbol ieee80211_wx_get_encodeext
ipw3945: disagrees about version of symbol ieee80211_wx_set_encode
ipw3945: Unknown symbol ieee80211_wx_set_encode
ipw3945: disagrees about version of symbol ieee80211_wx_get_encode
ipw3945: Unknown symbol ieee80211_wx_get_encode
ipw3945: disagrees about version of symbol ieee80211_txb_free
ipw3945: Unknown symbol ieee80211_txb_free
ipw3945: disagrees about version of symbol ieee80211_wx_set_encodeext
ipw3945: Unknown symbol ieee80211_wx_set_encodeext
ipw3945: disagrees about version of symbol ieee80211_wx_get_scan
ipw3945: Unknown symbol ieee80211_wx_get_scan
ipw3945: disagrees about version of symbol ieee80211_freq_to_channel
ipw3945: Unknown symbol ieee80211_freq_to_channel
ipw3945: disagrees about version of symbol ieee80211_set_geo
ipw3945: Unknown symbol ieee80211_set_geo
ipw3945: disagrees about version of symbol ieee80211_rx
ipw3945: Unknown symbol ieee80211_rx
ipw3945: disagrees about version of symbol ieee80211_get_channel
ipw3945: Unknown symbol ieee80211_get_channel
ipw3945: disagrees about version of symbol ieee80211_channel_to_index
ipw3945: Unknown symbol ieee80211_channel_to_index
ipw3945: disagrees about version of symbol ieee80211_rx_mgt
ipw3945: Unknown symbol ieee80211_rx_mgt
ipw3945: disagrees about version of symbol ieee80211_get_geo
ipw3945: Unknown symbol ieee80211_get_geo
ipw3945: disagrees about version of symbol free_ieee80211
ipw3945: Unknown symbol free_ieee80211
ipw3945: disagrees about version of symbol ieee80211_tx_frame
ipw3945: Unknown symbol ieee80211_tx_frame
ipw3945: disagrees about version of symbol ieee80211_is_valid_channel
ipw3945: Unknown symbol ieee80211_is_valid_channel
ipw3945: disagrees about version of symbol ieee80211_get_channel_flags
ipw3945: Unknown symbol ieee80211_get_channel_flags
ipw3945: disagrees about version of symbol alloc_ieee80211
ipw3945: Unknown symbol alloc_ieee80211
ACPI: PCI Interrupt :00:1f.3[B] - GSI 19 (level, low) - IRQ 19
sdhci: Secure Digital Host Controller Interface driver, 0.12
sdhci: Copyright(c) Pierre Ossman
sdhci: SDHCI controller found at :08:06.3 [104c:803c] (rev 0)
ACPI: PCI Interrupt :08:06.3[D] - GSI 20 (level, low) - IRQ 21
mmc0: SDHCI at 0xd0007800 irq 21 PIO
iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, 1
.2.26ks
iwl3945: Copyright(c) 2003-2008 Intel Corporation
ACPI: PCI 

Re: wireless card problem

[William Shu]

Hi Kashif,
Please find below a script that provides a solution from which you can be 
inspired. I thought I posted it in April 2008, but it seems it went into spam 
instead!

The solution considers only 64-bit and 128-bit WEP encryption. I had since not 
been able to look for the solutions for WPA and WPA-PSK.

For that it seems one has to fiddle with the wpa_supplicant services daemon 
which basically crashes on my laptop (HP Pavilion 5000 running SL50) and the 
HOWTO documents seem to suggest the appropriate driver for my wireless card is 
*not* available.

Note that the default gateway may be on the wrong ethernet device. 
Specifically, when running this script from within /etc/rc.local, the default 
gateway will not be through the wireless card because the wireless card will 
then be activated at the end of the boot process. Simply deactivate then 
reactivate the device from system-config-network,  allow all users to 
reactivate the devices, etc.  Also, you can use, e.g.,

# /sbin/route del default  ; remove default gateway
# /sbin/route add default gw 192.168.10.1 eth1 ; create new default

to set the default gateway to wireless device (eth1 here) with IP address 
192.168.10.1


Hope the above helps.

William.

[start of script]---

# This script is just to activate wireless connection for the
# TrendNet TEW-432BRP Wireless Router to the on the
# HP Pavilion 5000 laptop (dv5250ca). The laptop interface is
# the: Intel Corporation PRO/Wireless 3945ABG Network Connection
#
# This script is called from /etc/rc.local at boot time, where the
# filename of the script *manually* inserted.
#
# The wireless router can be used if the laptop is given a fixed
# IP address. For this to happen, the ipw3945d service (driver) has
# to be activated so that the wireless connection is associated with
# the eth1 interface (or whichever).  (From HOWTO documents this is
# done to meet an FCC legal requirement that a user must not be able
# to give unlawful values to certain wireless connectivity parameters.
# The ipw3945d daemon -- issued in binary only -- encapsulates sofware
# that can change certain wireless connectivity parameters into
# unlawful values, had the user had access to the source code.)
# eth0 is associated with the wired network interface.


# 1) activate the ipw3945d daemon
# NOTE: The ipw3945d service must have been activated for eth1 to be seen.
# this need be done only once either from system-config-services graphical
# interface by using chkconfig as following:
# add service for mgt by chkconfig, if not already there
#
# # /sbin/chkconfig --add ipw3945d 
#
# activate service for [at least] runlevels 3 (command line) and 5 (graphics).
#
# /sbin/chkconfig --levels 35 ipw3945d on


# 2) configure the ethernet device. This can be done before step 3 below
# NOTE: It is not yet known how to use an IP from the router's DHCP,
# since eth1 would not be up by then.

/sbin/ifconfig eth1 192.168.1.4 up


# 3) wireless configuration.  This can be done before step 2 above
# give eth1 an SSID (wlanName), and automatically adjust bit rate (rate) and
# transmission power (txpower).

/sbin/iwconfig eth1 essid wlanName rate auto txpower auto


# give the wireless key in ASCII (s:) and make it shared (restricted)
# NOTE 1: password on command line is insecure as it may appear, say,
#  in ps command.
# NOTE 2: The encryption schem is WEP (Wired Equivalent Protection)
# which is notknown to be secure. For a 128-bit WEP encryption, supply
# a key of 12 ASCII characters (Windows XP may insist on 16 characters).
# Fewer (5 to 8?) may provide a 64-bit WEP encryption.
# NOTE 3: The router also provides WPA and WPA-PSK encryption, but
# iwconfig does not yet handle passphrases, and hence(?) them.

/sbin/iwconfig eth1 key restricted s:

[end of script]---

--- On Mon, 7/21/08, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote:

 From: [EMAIL PROTECTED] [EMAIL PROTECTED]
 Subject: wireless card problem
 To: [EMAIL PROTECTED]
 Date: Monday, July 21, 2008, 11:32 AM
 Hi All
 I have installed SL 5  with dual booting on my  Acer Aspire
 4710 laptop.
 In Window Vista my wireless network is working fine.It is
 showing Intel(R)
 PRO/Wireless 3945BG wireless card.
 But in linux platform when I try to activate wireless
 network through
 network configuration panel it give this error
 3c501 device eth1 does not seem to be present, delaying
 initialization.
 please suggest that how to proceed to troubleshoot the
 problem
 Thanks
 Kashif


  

Re: use of wireless router that issues DHCP IP addresses

[William Shu]

--- John Summerfield [EMAIL PROTECTED] wrote:

 William Shu wrote:
  Hi,
  I have 3 issues related with using my wireless router, and
  making sure changes take effect at boot time.
  
  ISSUE 1: Obtaining DHCP from router
  My wireless router can be used if my machine (an hp
 pavillion
  5000 series laptop) is given a fixed IP address. For this to
  happen, the ipW3945d service (driver) has to be activated so
  that the wireless connection is associated with the eth1
  interface. (From the HOWTO's this is done so that sofware
 that
  can change certain wireless connectivity parameters into
  unlawful values cannot be tampered with by a user, which is
 an
  FCC legal requirement) eth0 is associated with the wired
 network
  interface.
  
  My router may issue DHCP IP addresses, but I cannot use the
  wireless connection because I would need the issued IP
 address
  to configure the eth1 interface needed for the connection!
  Unfortunately, the router cannot issue both fixed and DHCP
 IP
  addresses at the same time! Furthermore, the accepted
 address
  range set for the router need not be known by the user, who
 need
  not have root/admin access.
  
  QUESTION: How can I configure my eth1 interface so that it
 can
  get a DHCP IP address from the router?
 
 What brand/model of wireless router? I failed to get a dlink
 working, 
 though I've had n problems with Apple's airports or a linksys.

The router is a TRENDnet TEW432BRP
(I closed the former thread direct network cable connection
between two SL5 machines to start this thread of limited scope
-- hope the correct course of action! -- but it seems the mail
got corrupted/never got through. I now hope to give one final
feedback to close both threads!) 

 
 I don't use the builtin dhcp server, but I do use dhcp.

Any hints? The problem, as I understand it, is that
system-config-network does not see the eth1 interface until it
has an IP address and so I cannot even configure it to accept
dhcp, the same way eth0 can be configured.  This explains why I
had to use the individual commands /sbin/iwconfig and
/sbin/ifconfig on the command line.

 
  
  
  ISSUE 2: Adding configuration start-up commands at boot time
  The following are actually more of linux boot-related
 questions:
  I used /sbin/chkconfig to start the ipw3945d service at boot
  time. However, the initialisation commands
  # /sbin/iwconfig eth1 essid doit1wlan channel 6 rate auto
  txpower auto
 I would not specify the channel on a client.

Okay, I will remove the channel and try it out again.

 
  # /sbin/iwconfig eth1 key open s:x
 what's that work open? key is supposed to be followed
 immediately 
 by the key.

From iwconfig man page, it seems security has two modes: open vs
restricted; I did try all options, including no option.
Restricted seems to be the same thing as what is termed shared
on the Trendnet. Moreover, I read somewhere (can't give
reference) that if the network is open, then the WEP
encryption security will be guaranteed both in the wireless and
wired segment of the LAN.

I'm afraid I just dabble in all these, following the man pages
and any other documentation available, and the above parameters
are combinations that ended up working!.

 
  # /sbin/ifconfig eth1 up 192.168.110
  which are used to configure the device are lost. 
  
  QUESTION: How should I save these commands so that they are
  automatically executed at time? (.bashrc does not seem
 right!)
 
 If you use RH's configuration tools, it should all work. The 
 information's stored in /etc/sysconfig/network-scripts and
 it's possible 
 to edit the files with a little vim, but I prefer to see
 something to 
 work on.

As explained above, system-config-network does *not* see the
eth1 interface.

I feel slightly un-nerved editing files in the
/etc/sysconfig/network-scripts. Are they not automatically
generated? Or should I just create a shell script and add to the
directory?

 
  
  
  ISSUE 3: Controlling Services across sessions
  Sometimes, when my laptop runs out of power and shuts down,
 the
  subsequent reboot restart or resume some of the programs
  (processes) that were running before. This does not happen
 when
  I shutdown the system. I have deleted the processes from the
  current session services, but they still re-appear on
 subsequent
  boots. (such processes seem to be hvve unusual names, id's
 or
  directory paths appended/prepended to them). I think at one
 time
  in the distant past, pm-hibernate or pm-suspend had been
 called.
  
 
 If the system hibernates, then it should resume to the same
 state it was 
 in before. By definition.
 
  QUESTION 1: How can I turn this on or off -- at my
 discretion?
 
 I have in the past had success setting my choices in KDE

I am on gnome. What commands are actually given?

 



  

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use of wireless router that issues DHCP IP addresses

[William Shu]

Hi,
I have 3 issues related with using my wireless router, and
making sure changes take effect at boot time.

ISSUE 1: Obtaining DHCP from router
My wireless router can be used if my machine (an hp pavillion
5000 series laptop) is given a fixed IP address. For this to
happen, the ipW3945d service (driver) has to be activated so
that the wireless connection is associated with the eth1
interface. (From the HOWTO's this is done so that sofware that
can change certain wireless connectivity parameters into
unlawful values cannot be tampered with by a user, which is an
FCC legal requirement) eth0 is associated with the wired network
interface.

My router may issue DHCP IP addresses, but I cannot use the
wireless connection because I would need the issued IP address
to configure the eth1 interface needed for the connection!
Unfortunately, the router cannot issue both fixed and DHCP IP
addresses at the same time! Furthermore, the accepted address
range set for the router need not be known by the user, who need
not have root/admin access.

QUESTION: How can I configure my eth1 interface so that it can
get a DHCP IP address from the router?


ISSUE 2: Adding configuration start-up commands at boot time
The following are actually more of linux boot-related questions:
I used /sbin/chkconfig to start the ipw3945d service at boot
time. However, the initialisation commands
# /sbin/iwconfig eth1 essid doit1wlan channel 6 rate auto
txpower auto
# /sbin/iwconfig eth1 key open s:x
# /sbin/ifconfig eth1 up 192.168.110
which are used to configure the device are lost. 

QUESTION: How should I save these commands so that they are
automatically executed at time? (.bashrc does not seem right!)


ISSUE 3: Controlling Services across sessions
Sometimes, when my laptop runs out of power and shuts down, the
subsequent reboot restart or resume some of the programs
(processes) that were running before. This does not happen when
I shutdown the system. I have deleted the processes from the
current session services, but they still re-appear on subsequent
boots. (such processes seem to be hvve unusual names, id's or
directory paths appended/prepended to them). I think at one time
in the distant past, pm-hibernate or pm-suspend had been called.

QUESTION 1: How can I turn this on or off -- at my discretion?
QUESTION 2: Which services can be controlled this way?
openOffice.org 2.0 and file-roller seem to behave this way, but
not emacs.

Does anyone have an experience that will help?

William


  

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RE: direct network cable connection between two SL5 machines

[William Shu]

Dear Jim,
Yes, when using the crossover cable, the gateway is not needed.
Barring prior internet connections in the machine's distant
past, I have no clue how the gateways may have been obtained.
All I recognise is that from /sbin/route -n -v, doit is
alias for 192.168.0.1, as found in /etc/hosts. I am yet to look
at gateway-related issues when I focus on installing the
wireless router. Then, I will try out the suggestions.

However, the thorny question now is why does one or the other of
the network cards on the machine not work. This happens whether
or not the cards have different or identical IP addresses! (It
seems to be a chance game!) Decoding the output of
/sbin/ifconfig -a is not yet obvious to me!


William. 

--- Jim McCarthy [EMAIL PROTECTED] wrote:

 William --
 
 You wrote:
 
  Dear all,
  
  I finally got the connection over the crossover cable! For
  reasons that are beyond me, one of the two network cards (on
  the desktop machine) becomes inactive shortly after
 activation
  under system-network-config. After permuting IP addresses
 and
  network cards, I finally got it working!
  
  I am not sure if I had a configuration problem on the cards
 or
  one of them is bad/unstable. However, since I also have
 Redhat
  9.0 on the machine, I am yet to secure an old card (that is
  known to work under RH9) in order to find out.
  
  Nonetheless, I would appreciate if anyone could let me know
 if
  the above solution/problem could have been detected by
  interpreting the /sbin/ifconfig -a and /sbin/route -v
 outputs.
  
  For the router question, I will give feedback once I turn my
  attention to it.
  
  Many thanks to all for the assistance.
  
  William.
 
 I'm just catching up on this thread sorry if this is old
 news.
 In reviewing your output from /sbin/route on machine
 tinys150:
 
  [EMAIL PROTECTED] wss]#  /sbin/route -v
  Kernel IP routing table
  Destination  Gateway  Genmask Flags Metric Ref Use
 Iface
  192.168.0.0 *255.255.255.0  U  00   0  eth0
  169.254.0.0 *255.255.0.0U  00   0  eth0
  default   doit   0.0.0.0UG 00   0  eth0
 
 
 ...the gateway doit for the default route looks
 out-of-place,
 since with a direct network cable connectionn between two SL5
 machines, you do not have Domain Name Service (DNS) to
 identify
 an IP address (192.168.0.3) with the name doit.  Hence I
 might
 suggest you try on tiny150:
 
 % /sbin/route del default
 % /sbin/route add default gw 192.168.0.3 eth0
 % /sbin/route -v
 
 and likewise on hps150 try:
 
 % /sbin/route del default
 % /sbin/route add default gw 192.168.0.1 eth0
 % /sbin/route -v
 
 ... and in the -v output, check that each machine is
 configured
 so that the other machine is its default gateway.  Maybe this 
 will help ensure that the two machines communicate reliably
 via
 the cross-over network cable ?
 
 Good luck,
 
 -- Jim McCarthy
 
 


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Re: direct network cable connection between two SL5 machines

[William Shu]

snip

QUESTION 1: How should I go about having the desired
peer-to-peer connection, without trying to use an
 Internet
Service Provider, or start managing a local area
 network.
  I
understand linux is a network operating system and so
   nothing
special needs to be done. That is, the desired service
  (ftp,
ssh, etc) is requested and used, if it is set up on both
machines.
   
   If you are connected with a crossover-cable (or have a
  network
   card that 
   support crossover simulation), you have to only setup IP
   addresses of 
   the same local vlan. For example 192.168.0.1 for your
  desktop
   interface 
   and 192.168.0.2 for your laptop. You should be able to
 ping
   each other 
   without having a route.
  
  Yes, this is what I think I did. Later, I will verify the
  connection.
 
 I have now got the details of:
   route -v
 and:
   /sbin/ifconfig -a
 
 on both machines. I notice there is a destination,
 169.254.0.0,
 (under route -v) that I do not remember ever using!
 
Dear all,

I finally got the connection over the crossover cable! For
reasons that are beyond me, one of the two network cards (on the
desktop machine) becomes inactive shortly after activation
under system-network-config. After permuting IP addresses and
network cards, I finally got it working!

I am not sure if I had a configuration problem on the cards or
one of them is bad/unstable. However, since I also have Redhat
9.0 on the machine, I am yet to secure an old card (that is
known to work under RH9) in order to find out.

Nonetheless, I would appreciate if anyone could let me know if
the above solution/problem could have been detected by
interpreting the /sbin/ifconfig -a and /sbin/route -v outputs.

For the router question, I will give feedback once I turn my
attention to it.


Many thanks to all for the assistance.


William.

 
snip



  

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Re: direct network cable connection between two SL5 machines

[William Shu]

--- William Shu [EMAIL PROTECTED] wrote:

 --- Marek Mahut [EMAIL PROTECTED] wrote:
 
  Hello William,
  
  William Shu wrote:
   Hi,
   
   I have secured a network cable (rj45 heads) to link a
 laptop
   directly to a desktop machine which has *no* access to a
   network. The desktop has TWO network cards and an rj11
  socket
   (for telephone). The heads of the network cable have been
   rewired so that a switch or hub is *not* used. The
  technician
   tested the cable by pinging between 2 Windows XP machines,
  but
   knows nothing of linux and unix-based machines.
  Unfortunately,
   when I do a ping from laptop to desktop or vice-versa, I
 get
  the
   message Destination Host Unreachable (See sample output
   below).
   
   (I know next to nothing about networks and so I hope the
   questions below still make sense!)
   
   QUESTION 1: How should I go about having the desired
   peer-to-peer connection, without trying to use an Internet
   Service Provider, or start managing a local area network.
 I
   understand linux is a network operating system and so
  nothing
   special needs to be done. That is, the desired service
 (ftp,
   ssh, etc) is requested and used, if it is set up on both
   machines.
  
  If you are connected with a crossover-cable (or have a
 network
  card that 
  support crossover simulation), you have to only setup IP
  addresses of 
  the same local vlan. For example 192.168.0.1 for your
 desktop
  interface 
  and 192.168.0.2 for your laptop. You should be able to ping
  each other 
  without having a route.
 
 Yes, this is what I think I did. Later, I will verify the
 connection.

I have now got the details of:
route -v
and:
/sbin/ifconfig -a

on both machines. I notice there is a destination, 169.254.0.0,
(under route -v) that I do not remember ever using!


 [ Details on machine tiny: ] ===


Statically set IP addresses on [desktop] tiny (found under the
General tab of system-config-network):
Address: 192.168.0.1
Subnet mask: 255.255.255.0
Default Gateway address: 192.168.0.1



[EMAIL PROTECTED] wss]#  /sbin/route -v
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
   Use Iface
[EMAIL PROTECTED] wss]#  /sbin/route -v
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
   Use Iface
192.168.0.0 *   255.255.255.0   U 0  0  
 0 eth0
169.254.0.0 *   255.255.0.0 U 0  0  
 0 eth0
default doit0.0.0.0 UG0  0  
 0 eth0
[EMAIL PROTECTED] wss]# /sbin/ifconfig -a
eth0  Link encap:Ethernet  HWaddr 00:50:DA:5D:77:A6  
  inet addr:192.168.0.1  Bcast:192.168.0.255 
Mask:255.255.255.0
  inet6 addr: fe80::250:daff:fe5d:77a6/64 Scope:Link
  UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:0 
  RX bytes:0 (0.0 b)  TX bytes:8155 (7.9 KiB)

eth1  Link encap:Ethernet  HWaddr 00:0E:2E:2F:C8:B7  
  BROADCAST MULTICAST  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:1000 
  RX bytes:0 (0.0 b)  TX bytes:8165 (7.9 KiB)
  Interrupt:9 Base address:0xaf00 

loLink encap:Local Loopback  
  inet addr:127.0.0.1  Mask:255.0.0.0
  inet6 addr: ::1/128 Scope:Host
  UP LOOPBACK RUNNING  MTU:16436  Metric:1
  RX packets:2761 errors:0 dropped:0 overruns:0 frame:0
  TX packets:2761 errors:0 dropped:0 overruns:0
carrier:0
  collisions:0 txqueuelen:0 
  RX bytes:4050484 (3.8 MiB)  TX bytes:4050484 (3.8 MiB)

peth0 Link encap:Ethernet  HWaddr FE:FF:FF:FF:FF:FF  
  UP BROADCAST NOARP  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
  [EMAIL PROTECTED] wss]# ping 192.198.0.3
PING 192.198.0.3 (192.198.0.3) 56(84) bytes of data.
From 192.168.0.1 icmp_seq=2 Destination Host Unreachable
From 192.168.0.1 icmp_seq=3 Destination Host Unreachable
From ons:0 txqueuelen:1000 
  RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
  Interrupt:5 Base address:0x6e80 

sit0  Link encap:IPv6-in-IPv4  
  NOARP  MTU:1480  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
  collisions:0 txqueuelen:0 
  RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

veth1 Link encap:Ethernet  HWaddr 00:00:00:00:00:00  
  BROADCAST MULTICAST  MTU:1500  Metric:1
  RX packets:0 errors:0 dropped:0 overruns:0 frame:0
  TX packets:0 errors:0 dropped:0 overruns:0 carrier

How to enable/disable/control touch-sensitive mouse hibernation

[William Shu]

Hi,
The built-in (synaptic) mouse on my laptop (HP Pavilion dv5000
series) is rather too sensitive to touch, and so moves the
cursor or changes windows erratically on slight/unintended
touch.  How can I:
(a) control the sensitivno gpg, etc.ity?
(b) disable/enable the mouse as desired?

B) How can I make use of the hibernation facility: to hibernate
and then resume work were I left.

I use SL 5.0 with the security kernel.

Thanks,

william.



  

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Re: How do I perform manual or automatic mounts/accesses/repairs of hardisk/devices on SL 5.0

[William Shu]

 
 - Original Message 
 From: Jon Peatfield [EMAIL PROTECTED]
 To: William Shu [EMAIL PROTECTED]
 Cc: Troy Dawson [EMAIL PROTECTED]; [EMAIL PROTECTED]
 Sent: Friday, September 7, 2007 1:04:25 AM
 Subject: Re: How do I perform manual or automatic mounts/accesses/repairs of 
 hardisk/devices on SL 5.0
 
... 
  Question: why was the partition /dev/sda6 not automatically reduced in
  size, when the the physical volume was reduced? Do I manually reduce the
  partition to create the free space? Some of the interactions follow:
 snip use of pvresize
 
 Because pvresize just alters the amount of space that LVM is allowed to
 use.  The pvresize manpage says:
 
 Shrink the PV on /dev/sda1 prior to shrinking the partition with
 fdisk (ensure that the PV size is appropriate for your intended new
 partition size):
 
 Altering the pv-size is an unusual operation.  What are you actually
 trying to do?  If you just wanted to move some of the space from one lv to
 another (in the same vg) then tools like system-config-lvm will let you do
 that (though shrinking can't be done while a filesystem is live)...

Wanted to create space for a vfat partition (ntfs is too risky)  which will 
thus enable me transfer data between linux and windows.

 ... 
  [EMAIL PROTECTED] sluser]# mount -text3 /dev/sda6 /mnt/anchor# 
  physical partition is sda6.
  mount:mounting /dev/sda6 failed: No such file or directory
 
 is lvm active at this point?  What do you get from running:
 
vgscan
vgchange -tv -ay
pvdisplay -c
vgdisplay -c
lvdisplay -c
 
 BTW the error I'd expect if the device doesn't exist is:
 
mount: special device /dev/VolGroup00/LogVol00 does not exist
 
 or if the mount-point doesn't exist I'd expect something like:
 
mount: mount point /mnt/anchor does not exist

Was working with the SL 5.0 rescue CD. The above vg* lv* pv* commands seemed to 
provide the desired information, but since another soln path has been used, I 
will not try to hand-copy them.

 
 
  Q3) How do I perform a file system check with LVM partitions?
  I suspect I have a disk crash/bad sectors on my desktop but do not want
  to loose information. fsck does not work, presumably because of wrong
  file type, since I have to unmount the partition!
 
 Copy the raw disk/partitions off to somewhere safe before working on it if
 there is anything 'valuable' on the disk.  If the disk does have bad
 sectors then a utility like ddrescue may be more helpful than plain dd.

My worry here is that with lvm, you can no longer guarantee where information 
is found on the partition -- unless, perhaps, lvm is still in control!. While I 
have gotten yet another hard disk, and my immediate problem solved, I still 
want to be able to bypass lvm in the future, if need be.

... 
 
 snip
  Q4) How can you control where you mount devices automatically  (e.g.,
  flash sticks)?
  The mountpoints are not indicated in /etc/fstab, and the config files
  (*.conf) of automount and autofs do not seem to tell me where! In short
  I do not understand how these or the hal (hardware abstraction layer) 
  work!
 
 
  They get mounted in /media
 
  I'll let others expain how to figure that out.
 
  Is there some documentation that presents things in a coherent fashion.
  So far, I have drifted into finding out about udev, but things are just
  getting more elaborate!
 
 udev isn't really relevant except that it is involved in setting up the
 devices when 'hotplug' stuff happens.
 
 The magic keyword to look for is 'hal' (or 'hald').  The hald keeps track
 of hardware and presents APIs to access it (over d-bus I think).
 
 The shortish answer is that hal picks a mount-point based on info from the
 device or file-system.  Most commonly it will pick the volume-label if the
 file-system has one (and it doesn't clash with an existing mount) and then
 uses that under /media/
 
 Applications like gnome-volume-manager speak to hald (over d-bus) to get
 info about available devices and make requests to have things done (e.g.
 mount or umount volumes).  In fact g-v-m calls gnome-mount which speaks to
 hal for it.  From the command-line you can call gnome-mount directly if
 you want, e.g. I may use:
 
gnome-mount -p JSPDATA
 
 and it mounts my usb-stick (which has the volume-label JSPDATA), under
 /media/JSPDATA/ and later I can say:
 
gnome-mount --unmount -p JSPDATA
 
 to make it go away.  If there isn't a suitable volume-label it probably
 uses something else and I'm sure it you can find out what by reading hal's
 .fdi files - ok I'm not really sure at all the behaviour might possibly be
 hard-wired...  You can ask hal to mount in a different place (still under
 /media) and add mount options by adding extra options to the command-line:
 
 $ gnome-mount -p JSPDATA --mount-point ook
 $ df -hl| grep media
 /dev/sdb1 962M  4.3M  958M   1% /media/ook
 

thanks for the explanations, which have been very helpful. However, I

Re: How do I perform manual or automatic mounts/accesses/repairs of hardisk/devices on SL 5.0

[William Shu]

Thanks Troy,
I've made progress, but still have outstanding issues, as explained below.

...
  media devices, given the logical volume management (LVM). (Also, I am
  not too technical, and just want my machine to work without destroying
  information!)
 
 
  Q1) How do I resize an LVM logical partition? and its underlying file
  system?

...

 
 
 Use  system-config-lvm
 



I used system-config-lvm in the SL 5.0 Live CD to change the logical volume 
from the live CD. I have successfully reduced the size of the physical volume. 
However, the partition size in question (/dev/sda6) does not seem to have been 
reduced. fdisk and parted do not find free space to create a new partition, and 
gparted (free-standing) still shows the old partition size.

Question: why was the partition /dev/sda6 not automatically reduced in size, 
when the the physical volume was reduced? Do I manually reduce the partition to 
create the free space? Some of the interactions follow:

[EMAIL PROTECTED] sluser]# lvm
lvm pvresize --setphysicalvolumesize 63552M -vv /dev/sda6
  Setting global/locking_type to 1
  File-based locking selected.
  Setting global/locking_dir to /var/lock/lvm
Using physical volume(s) on command line

  ...

  /dev/sda6: size is 151251912 sectors
/dev/sda6: Pretending size is 130154496 not 151251912 sectors.
Resizing physical volume /dev/sda6 from 2307 to 1985 extents.
Resizing volume /dev/sda6 to 130154112 sectors.
Updating physical volume /dev/sda6
Test mode: Skipping volume group backup.
  Unlocking /var/lock/lvm/V_VolGroup00
  Physical volume /dev/sda6 changed
  1 physical volume(s) resized / 0 physical volume(s) not resized
Test mode: Wiping internal cache
Wiping internal VG cache
lvm 

[EMAIL PROTECTED] sluser]# /sbin/fdisk /dev/sda

The number of cylinders for this disk is set to 14593.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

   ...

Command (m for help): n
No free sectors available

Command (m for help): 

...


 
  Q2) How do I *manually* mount the Linux LVM file?
   From the rescue CD, the 'conventional' commands do not work, presumably
  because of wrong file type:
 
 # mount -text3 /dev/mapper/VolGroup00/LogVol00 /mnt/anchor
 # mount -text3 /dev/VolGroup00/LogVol00 /mnt/anchor
 # mount -text3 VolGroup00/LogVol00 /mnt/anchor
 # mount -text3 /dev/sda6 /mnt/anchor# physical partition is sda6.
 
 
 You aren't showing any error messages.  It's hard to know what the error is, 
 if
 you don't show the messages.
 I personally would do
mount /dev/mapper/VolGroup00/LogVol00 /mnt/anchor
 

[EMAIL PROTECTED] sluser]# mount -text3 /dev/mapper/VolGroup00/LogVol00 
/mnt/anchor
mount:mounting /dev/mapper/VolGroup00/LogVol00 failed: No such file or directory
[EMAIL PROTECTED] sluser]# mount -text3 /dev/VolGroup00/LogVol00 /mnt/anchor
mount:mounting /dev/VolGroup00/LogVol00 failed: No such file or directory

[EMAIL PROTECTED] sluser]# mount -text3 VolGroup00/LogVol00 /mnt/anchor
mount:mounting VolGroup00/LogVol00 failed: No such file or directory

[EMAIL PROTECTED] sluser]# mount -text3 /dev/sda6 /mnt/anchor# physical 
partition is sda6.
mount:mounting /dev/sda6 failed: No such file or directory



 
  Q3) How do I perform a file system check with LVM partitions?
  I suspect I have a disk crash/bad sectors on my desktop but do not want
  to loose information. fsck does not work, presumably because of wrong
  file type, since I have to unmount the partition!
 
 
 again, you aren't showing any error messages.  fsck should work.

I had messages similar to the one below for various devices tried. (the copy 
below is hand-copied (as I do not know how to copy the screen nor mount a flash 
stick when in rescue mode.)

# e3fsck -fcvn /dev/VolGroup00/LogVol00
e3fsck: Command not found.

# fsck -fcvn
e2fsck 1.39 (29 May-2006)
e2fsck: No such file or directory when to trying to open 
/dev/VolGroup00/LogVol00. The superblock could not be read or does not describe 
the correct ext2 filesystem. If the device is valid and it really contains an 
ext2 filesystem (and not swap or ufs or something else), then the superblock is 
corrupt, and you might try running e2fsck with alternate superbloc:
 e2fsck -b 8193 device.

 Note:  Doing an fsck on a corrupt file system does not bring data back.  It
 might actually remove the data you want.

Yes, but can help get rid of the od badblocks in crucial places. see further 
response below.

 
 
  Q4) How can you control where you mount devices automatically  (e.g.,
  flash sticks)?
  The mountpoints are not indicated in /etc/fstab, and the config files
  (*.conf) of automount and autofs do not seem to tell me where! In short
  I do not understand how these or the hal 

How do I perform manual or automatic mounts/accesses/repairs of hardisk/devices on SL 5.0

[William Shu]

Hi,
I want to move over from Redhat 9.0 to Scientific Linux 5.0, (2.6.18-8.1.3.el5) 
on my laptop and desktop, but I am having some problems which essentially seem 
to be linked to access to harddrive or media devices, given the logical volume 
management (LVM). (Also, I am not too technical, and just want my machine to 
work without destroying information!)


Q1) How do I resize an LVM logical partition? and its underlying file system?
I have a logical volume on my harddrive, which I want ot reduce in size so as 
to make room for a new vfat partition. Unfortunately, the logical volume 
(/dev/VolGroup00/LogVol00), which contains the operating system, must be 
unmounted before I can use the graphical lvm facility on it! Using the SL 5.0 
rescue CD, I decide to reduce it manually, after browsing the RedHat's 
Cluster_Logical Volume Management document. Commands given are [roughly]:

   sh-3.1# lvm
   lvm lvscan
 inactive  '/dev/VolGroup00/LogVol00' [70.16 GB] inherit
 inactive  '/dev/VolGroup00/LogVol01' [1.94 GB] inherit
   lvm lvchange -aly /dev/VolGroup00/LogVol00
   lvm lvscan
 ACTIVE'/dev/VolGroup00/LogVol00' [70.16 GB] inherit
 inactive  '/dev/VolGroup00/LogVol01' [1.94 GB] inherit
   lvm lvreduce --size -10G -r /dev/VolGroup00/LogVol00
 fsadm: execlp failed: No such file or directory
 fsadm failed: 2
   lvm

The problem seems to be deficulties in resizing file systems (from the -r flag 
to lvreduce).


Q2) How do I *manually* mount the Linux LVM file?
From the rescue CD, the 'conventional' commands do not work, presumably 
because of wrong file type:

   # mount -text3 /dev/mapper/VolGroup00/LogVol00 /mnt/anchor
   # mount -text3 /dev/VolGroup00/LogVol00 /mnt/anchor
   # mount -text3 VolGroup00/LogVol00 /mnt/anchor
   # mount -text3 /dev/sda6 /mnt/anchor# physical partition is sda6.


Q3) How do I perform a file system check with LVM partitions?
I suspect I have a disk crash/bad sectors on my desktop but do not want to 
loose information. fsck does not work, presumably because of wrong file type, 
since I have to unmount the partition!


Q4) How can you control where you mount devices automatically  (e.g., flash 
sticks)?
The mountpoints are not indicated in /etc/fstab, and the config files (*.conf) 
of automount and autofs do not seem to tell me where! In short I do not 
understand how these or the hal (hardware abstraction layer) work!


Thanks in advance,

William




   

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