[Ltsp-discuss] Ang: Re: Ang: Re: Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi!



-Rolf-Werner Eilert  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert 
Datum: 2017-02-22 12:35
Ärende: Re: [Ltsp-discuss] Ang: Re: Ang: Re: Client stops at setting up NIC

Hi Johan,

 >
> I attach one of my old dhcpd.conf files for you to have a look at.
>


Browsing the file, I wonder why there is this if-else clause with either 
pxelinux.0 OR nbi.img. I saw this on other examples in the net.

On my system, I have only pxelinux.0 defined in dhcpd.conf, and there is 
no nbi.img file anywhere. So I wonder when a client sends "PXEclient" 
and when not.

Do you have an idea?

Regards
Rolf




The image files are the files that are provided for the clients, that contains 
the OS. The chroot is only there for you to manage software, and then the image 
is built from the chroot. pxelinux.0 will point to other files for the boot 
process to continue.

I can't say much about how your system is working, sorry...





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[Ltsp-discuss] Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi, Alkis!

Suddenly my attitude to ltsp-pnp changed

I don't know if I have been ignorant, or if you have been not clear enough in 
communicating this? I have been in this community for a long time

/J


-Alkis Georgopoulos <alk...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Alkis Georgopoulos <alk...@gmail.com>
Datum: 2017-02-22 09:17
Ärende: Re: [Ltsp-discuss] Client stops at setting up NIC

On 22/02/2017 10:10 , Johan Kragsterman wrote:
>
> Thanks for the clarification of that, didn't know that.
 > What I have read about ltsp-pnp is that it can't use other clients
 > than the architecture of the server. Am I wrong there...?
 > If so, that makes all the difference.

For example, you can have a 64bit server,
with the default 64bit ltsp-pnp chroot that can boot 64bit thin and fat 
clients,
and then you can decide to run ltsp-build-client --arch i386 to support 
older i386 thin clients,
and then you can decide to follow 
https://help.ubuntu.com/community/UbuntuLTSP/RaspberryPi to build an 
armhf chroot to support booting raspberry pis too,
etc etc

ltsp-pnp just helps you set up your initial environment,
and gives you a graphical way to manage your default chroot,
it doesn't impose any limits to what you can do with your ltsp installation.

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[Ltsp-discuss] Ang: Re: Ang: Re: Ang: Re: Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi!



-Alkis Georgopoulos <alk...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Alkis Georgopoulos <alk...@gmail.com>
Datum: 2017-02-22 09:02
Ärende: Re: [Ltsp-discuss] Ang: Re: Ang: Re: Ang: Re: Client stops at setting 
up NIC

On 22/02/2017 09:57 , Johan Kragsterman wrote:
>
> Also, you can consider Alkis suggestion to use ltsp-pnp.
 > With that you got some good simplicity enhancements, but a trade off 
is less flexibility.
 > You can not use different images for different needs and 
architectures, all clients need
 > to use the same. In my setups I have preferred to use normal ltsp, 
but for sure, with a
 > less complicated environment ltsp-pnp would be useful. Though for me, 
I prefer the
 > flexibility of having the choice of different chroots.
>


ltsp-pnp uses the server / as a template for the default "chroot".
It doesn't prohibit you from creating 10 more chroots if you want to.






Thanks for the clarification of that, didn't know that. What I have read about 
ltsp-pnp is that it can't use other clients than the architecture of the 
server. Am I wrong there...? If so, that makes all the difference.

/Johan



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[Ltsp-discuss] Ang: Re: Ang: Re: Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi, Rolf!



-Rolf-Werner Eilert  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert 
Datum: 2017-02-22 08:32
Ärende: Re: [Ltsp-discuss] Ang: Re: Ang: Re: Client stops at setting up NIC

Hi Johan,

when I invoke it like that

> Just run this, and you get a list of the options: ltsp-build-client 
> --extra-help
>

it starts with building a new chroot immediately. Maybe it's too old?




Even with the option: --extra-help? ...strange...

Actually, I don't know much about that kiwi implementation of ltsp. Tried it 
some time several yrs ago, but abandoned it due to complications. But I guess 
you can run it in the live DVD, or if you install it on a external usb drive?

Also, you can consider Alkis suggestion to use ltsp-pnp. With that you got some 
good simplicity enhancements, but a trade off is less flexibility. You can not 
use different images for different needs and architectures, all clients need to 
use the same. In my setups I have preferred to use normal ltsp, but for sure, 
with a less complicated environment ltsp-pnp would be useful. Though for me, I 
prefer the flexibility of having the choice of different chroots.




> I attach one of my old dhcpd.conf files for you to have a look at.
>

Thank you very much, I will have a look at that next :)

Regards
Rolf



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[Ltsp-discuss] Ang: Re: Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi!


Hmm, what about the bios settings for the pxe boot in that nuc? Should be set 
to legacy boot only, not uefi.


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


-Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
Datum: 2017-02-21 18:17
Ärende: Re: [Ltsp-discuss] Ang: Re: Client stops at setting up NIC

Ok, I was alone in the office, shutdown the server and tried the 
edubuntu DVD.

Everyting starts as expected, I could start live-ltsp.

The NUC sees the DHCP, loads everything, starts - and ends up with a 
blinking cursor which disappears from time to time and appears again, 
blinking.

So it seems the graphics mode is not detected correctly, right? I tried 
TTY1, it was waiting for a login, but I didn't know what to use as password.

So I rebooted my server and wrote this mail :)

Regards
Rolf

Am 21.02.2017 12:35, schrieb Johan Kragsterman:
>
> Hi, Rolf!
>
>
> There is still the Edubuntu live DVD to download, according to this site:
>
> http://cdimage.ubuntu.com/edubuntu/releases/14.04.2/release/
>
> It is 14.04 though, but I'm sure it is modern enough.
>
>
> Best regards from/Med vänliga hälsningar från
>
> Johan Kragsterman
>
> Capvert
>
>
> -Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
> Till: ltsp-discuss@lists.sourceforge.net
> Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
> Datum: 2017-02-21 12:28
> Ärende: Re: [Ltsp-discuss] Client stops at setting up NIC
>
> Am 21.02.2017 11:25, schrieb Horst Prote:
>> Hi Rolf,
>>
>>> My brand new Intel NUC connects to the server, loads the kernel, but
>>> stops/hangs at setting up the network card. When booting in debug mode,
>>> it says "try setting the option-129".
>> I had this once, many years ago (ltsp-2.x). The solution was a newer
>> kernel with better support for the network adapter.
>>
>
> I guess it's something like that, unfortunately. And it means setting up
> a newer system for the server, doesn't it?
>
> Regards
> Rolf
>
>
>
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>
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[Ltsp-discuss] Ang: Re: Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi, Rolf!




-Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
Datum: 2017-02-21 17:35
Ärende: Re: [Ltsp-discuss] Ang: Re: Client stops at setting up NIC

Hi Johan,

thanks for that idea. I downloaded and burned one and will test as soon 
as possible.

But: Wouldn't it be possible to let ltsp make a new 64bit image instead 
of the i386.img it made now?





Sure, you can build many types of images with ltsp-build-client. There are many 
different options, like architecture, name, place, what is included, etc. I 
have run ltsp servers with multiple different images for multiple different 
client types.

Just run this, and you get a list of the options: ltsp-build-client --extra-help






I see there is a two-step booting: First

1.
/srv/tftpboot/boot/initrd-ltsp
/srv/tftpboot/boot/linux-ltsp

are loaded and executed (and my linux-ltsp is from 2012). Then I would 
expect

2.
/srv/kiwi-ltsp/i386.img

to be loaded and run. This img was made new when I invoked 
ltsp-built-client the other day.

The /etc/dhcpd.conf points to pxelinux.0 to boot from, is that correct?





I attach one of my old dhcpd.conf files for you to have a look at.








Maybe I'm getting something completely wrong here, but if I could get my 
new NUC running on the old server, I could make a direct test under 
working conditions.

Regards
Rolf


Am 21.02.2017 12:35, schrieb Johan Kragsterman:
>
> Hi, Rolf!
>
>
> There is still the Edubuntu live DVD to download, according to this site:
>
> http://cdimage.ubuntu.com/edubuntu/releases/14.04.2/release/
>
> It is 14.04 though, but I'm sure it is modern enough.
>
>
> Best regards from/Med vänliga hälsningar från
>
> Johan Kragsterman
>
> Capvert
>
>
> -Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
> Till: ltsp-discuss@lists.sourceforge.net
> Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
> Datum: 2017-02-21 12:28
> Ärende: Re: [Ltsp-discuss] Client stops at setting up NIC
>
> Am 21.02.2017 11:25, schrieb Horst Prote:
>> Hi Rolf,
>>
>>> My brand new Intel NUC connects to the server, loads the kernel, but
>>> stops/hangs at setting up the network card. When booting in debug mode,
>>> it says "try setting the option-129".
>> I had this once, many years ago (ltsp-2.x). The solution was a newer
>> kernel with better support for the network adapter.
>>
>
> I guess it's something like that, unfortunately. And it means setting up
> a newer system for the server, doesn't it?
>
> Regards
> Rolf
>
>
>
> --
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>
>
>
>
>
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>


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dhcpd.conf
Description: Binary data
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[Ltsp-discuss] Ang: Re: Client stops at setting up NIC

[Johan Kragsterman]

Hi, Rolf!


There is still the Edubuntu live DVD to download, according to this site:

http://cdimage.ubuntu.com/edubuntu/releases/14.04.2/release/

It is 14.04 though, but I'm sure it is modern enough.


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


-Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
Datum: 2017-02-21 12:28
Ärende: Re: [Ltsp-discuss] Client stops at setting up NIC

Am 21.02.2017 11:25, schrieb Horst Prote:
> Hi Rolf,
>
>> My brand new Intel NUC connects to the server, loads the kernel, but
>> stops/hangs at setting up the network card. When booting in debug mode,
>> it says "try setting the option-129".
> I had this once, many years ago (ltsp-2.x). The solution was a newer
> kernel with better support for the network adapter.
>

I guess it's something like that, unfortunately. And it means setting up 
a newer system for the server, doesn't it?

Regards
Rolf



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[Ltsp-discuss] Ang: Re: Ang: Re: Which flavour of Zotac clients - C or M

[Johan Kragsterman]

Hi, Rolf!



-Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
Datum: 2017-02-01 13:06
Ärende: Re: [Ltsp-discuss] Ang: Re: Which flavour of Zotac clients - C or M

Hej Johan!

How did you realize the power supply? As far as I can see from the data 
sheets, there is no power supply integrated into the chassis, right? So 
I would have to use an external one. Do the plugs for the mobo come with 
the chassis? And what kind of power supply did you use?

Regards
Rolf


Yeah, everything except the external PSU comes with the chassi. You got a power 
front board to fit in, and a rear power plug slot. It is a bit tight to mount, 
but it worked fine for me.

I think I ordered the chassis together with the PSU's, don't really 
remember...but I'm sure the supplier you buy it from will be able to provide 
that too.

I bought them from a Swedish supplier. It is called: Chieftec AC-adapter 90W 
CDP-090ITX

I googled and found a German supplier of the PSU here:

https://www.heise.de/preisvergleich/chieftec-cdp-090itx-a953460.html

And they seem to have the chassi as well:

https://www.heise.de/preisvergleich/chieftec-compact-ix-01b-ix-01b-op-a896121.html?hloc=at=de



Am 18.01.2017 11:11, schrieb Johan Kragsterman:
>
> Hej!
>
>
> Rolf, it would be much cheaper if you build them yourself.
>
> I have used these parts:
>
> Mobo: https://www.asus.com/Motherboards/J1900IC/
>
> Chassi: http://www.chieftec.eu/en/chassis/itx/compact-series/ix-03b.html
>
> Price together around EUR200, no big problems to fit. I've used these for 
> more than a year, and they're silent(no fan) and reliable. Actually seldom 
> turn them off. Use to have uptime of 2 months or so...
>
>
> Best regards from/Med vänliga hälsningar från
>
> Johan Kragsterman
>
> Capvert
>
>
> -Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
> Till: ltsp-discuss@lists.sourceforge.net
> Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
> Datum: 2017-01-18 10:41
> Ärende: Re: [Ltsp-discuss] Which flavour of Zotac clients - C or M
>
> Nobody here who has an opinion or has experience with these machines?
>
> Rolf
>
> Am 12.01.2017 08:27, schrieb Rolf-Werner Eilert:
>> Hi folks,
>>
>> As this year we plan to replace our old clients by newer ones, I was
>> looking around for someone who could show me Zotac ones, but as far as I
>> can see there is no dealer around my home town. So I wont be able to
>> test them prior to buying a whole number of them.
>>
>> This is why I ask here. Who has had experience with C-type and/or M-type
>> Zboxes? C ones are fanless, M ones maybe are more powerful. I wonder how
>> disturbing the fans in M-type ones can be (we need e. g. 16 in one
>> room), or how much weaker the power of the C-type ones is.
>>
>> We already had a discussion about fat clients. Would the C-type Zboxes
>> be ok here, too?
>>
>> Thanks for your opinions.
>>
>> Regards
>> Rolf
>>
>> --
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[Ltsp-discuss] Ang: Re: Ang: Re: Which flavour of Zotac clients - C or M

[Johan Kragsterman]

Hej, Rolf!


If you want more powerful, you can get it, but it will be difficult to get much 
more on an embedded cpu, at the moment. And without the need of a heatsink. But 
you can check out the Z170 chipset mitx mobo's, but they don't come with 
embedded CPU, so the price will rise a LOT!

For my need my suggestion is good enough, but of coarse it will all depend on 
what you will be doing.



Okay, checked out a little bit more...

Seem to be difficult to get an embedded with the latest skylake, but you can 
get it with a j2900 CPU. You can check this out:

http://www.asrock.com/mb/intel/q2900-itx/

http://www.cpubenchmark.net/cpu.php?cpu=Intel+Pentium+J2900+%40+2.41GHz

That one will fit in my suggestion for chassi as well.


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


-Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
Datum: 2017-01-18 17:33
Ärende: Re: [Ltsp-discuss] Ang: Re: Which flavour of Zotac clients - C or M

Thank you very much for your answers.

Alkis, this is an interesting value, >3000 for a new fat client. You are 
right, in this case I would need the big ones with fans. Is this just 
what you read or based on own experience?

Johan, I checked the CPU from your proposal, it has only slightly more 
power than the "weak" ones in Alkis' opinion. What would you say, are 
they powerful enough to give good fat clients?

So... I am still a bit uncertain  :)

Regards
Rolf



Am 18.01.2017 11:11, schrieb Johan Kragsterman:
>
> Hej!
>
>
> Rolf, it would be much cheaper if you build them yourself.
>
> I have used these parts:
>
> Mobo: https://www.asus.com/Motherboards/J1900IC/
>
> Chassi: http://www.chieftec.eu/en/chassis/itx/compact-series/ix-03b.html
>
> Price together around EUR200, no big problems to fit. I've used these for 
> more than a year, and they're silent(no fan) and reliable. Actually seldom 
> turn them off. Use to have uptime of 2 months or so...
>
>
> Best regards from/Med vänliga hälsningar från
>
> Johan Kragsterman
>
> Capvert
>
>
> -Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
> Till: ltsp-discuss@lists.sourceforge.net
> Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
> Datum: 2017-01-18 10:41
> Ärende: Re: [Ltsp-discuss] Which flavour of Zotac clients - C or M
>
> Nobody here who has an opinion or has experience with these machines?
>
> Rolf
>
> Am 12.01.2017 08:27, schrieb Rolf-Werner Eilert:
>> Hi folks,
>>
>> As this year we plan to replace our old clients by newer ones, I was
>> looking around for someone who could show me Zotac ones, but as far as I
>> can see there is no dealer around my home town. So I wont be able to
>> test them prior to buying a whole number of them.
>>
>> This is why I ask here. Who has had experience with C-type and/or M-type
>> Zboxes? C ones are fanless, M ones maybe are more powerful. I wonder how
>> disturbing the fans in M-type ones can be (we need e. g. 16 in one
>> room), or how much weaker the power of the C-type ones is.
>>
>> We already had a discussion about fat clients. Would the C-type Zboxes
>> be ok here, too?
>>
>> Thanks for your opinions.
>>
>> Regards
>> Rolf
>>
>> --
>> Developer Access Program for Intel Xeon Phi Processors
>> Access to Intel Xeon Phi processor-based developer platforms.
>> With one year of Intel Parallel Studio XE.
>> Training and support from Colfax.
>> Order your platform today. http://sdm.link/xeonphi
>> _
>> Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
>> https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
>> For additional LTSP help,   try #ltsp channel on irc.freenode.net
>>
>>
>
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> _
> Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
>https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
> For additional LTSP help,   try #ltsp channel on irc.freenode.net
>
>
>
>
>
>
> --
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
> 

[Ltsp-discuss] Ang: Re: Which flavour of Zotac clients - C or M

[Johan Kragsterman]

Hej!


Rolf, it would be much cheaper if you build them yourself.

I have used these parts:

Mobo: https://www.asus.com/Motherboards/J1900IC/

Chassi: http://www.chieftec.eu/en/chassis/itx/compact-series/ix-03b.html

Price together around EUR200, no big problems to fit. I've used these for more 
than a year, and they're silent(no fan) and reliable. Actually seldom turn them 
off. Use to have uptime of 2 months or so...


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


-Rolf-Werner Eilert <rwe-...@osnanet.de> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Rolf-Werner Eilert <rwe-...@osnanet.de>
Datum: 2017-01-18 10:41
Ärende: Re: [Ltsp-discuss] Which flavour of Zotac clients - C or M

Nobody here who has an opinion or has experience with these machines?

Rolf

Am 12.01.2017 08:27, schrieb Rolf-Werner Eilert:
> Hi folks,
>
> As this year we plan to replace our old clients by newer ones, I was
> looking around for someone who could show me Zotac ones, but as far as I
> can see there is no dealer around my home town. So I wont be able to
> test them prior to buying a whole number of them.
>
> This is why I ask here. Who has had experience with C-type and/or M-type
> Zboxes? C ones are fanless, M ones maybe are more powerful. I wonder how
> disturbing the fans in M-type ones can be (we need e. g. 16 in one
> room), or how much weaker the power of the C-type ones is.
>
> We already had a discussion about fat clients. Would the C-type Zboxes
> be ok here, too?
>
> Thanks for your opinions.
>
> Regards
> Rolf
>
> --
> Developer Access Program for Intel Xeon Phi Processors
> Access to Intel Xeon Phi processor-based developer platforms.
> With one year of Intel Parallel Studio XE.
> Training and support from Colfax.
> Order your platform today. http://sdm.link/xeonphi
> _
> Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
>https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
> For additional LTSP help,   try #ltsp channel on irc.freenode.net
>
>


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[Ltsp-discuss] Ang: Re: Ang: Kerberos ticket upon login

[Johan Kragsterman]

Hi!



Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


-Finn Andersen <xiphias...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Finn Andersen <xiphias...@gmail.com>
Datum: 2016-12-09 10:48
Ärende: Re: [Ltsp-discuss] Ang: Kerberos ticket upon login

Hmm...yes, and no. 
Sssd is used on the server. I'm using a fat-client, which is authenticating the 
"ltsp-way" with ldm/ssh. The kerberos ticket needs to live on the local machine 
running the fat-client image. The fat-client image doesn't have sssd installed. 
Btw I'm using Debian Jessie for my install.

But, thanks for the tip. I'll look into mailinglist for sssd.






Ok, I see. You can of coarse install/configure sssd and the clients, but the 
question is if it needs filesystem write access where it couldn't get it on a 
fat client...? That is perhaps configurable, though...


/Johan






Cheers,
Finn Andersen


On Fri, Dec 9, 2016 at 11:05 AM, Johan Kragsterman 
<johan.kragster...@capvert.se> wrote:

Hi!




-Finn Andersen <xiphias...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Finn Andersen <xiphias...@gmail.com>
Datum: 2016-12-09 09:56
Ärende: [Ltsp-discuss] Kerberos ticket upon login

Hi!

I'm almost done setting up a ltsp in our corporate environment.
I use sssd/samba/kerberos to authenticate against Windows AD.

Screensaver unlocking is working with kerberos.
SSO with Firefox is working including corporate root ca certificate, which I 
thought was going to be the biggest problem.

The only thing left is having a kerberos ticket created upon login. Is that 
something that is possible? Does anyone know how to accomplish this? PAM-magic??




Since you use sssd, it must be sssd that handles kerberos. Perhaps pam is 
involved, but sssd is responsible to handle the pam modules. I suggest you use 
the sssd mailing lists. If you are using ubuntu, though, sssd is a little bit 
of a mess, imho. It is much easier on fedora/rhel/centos.

/Johan








Thanks,
Finn Andersen


--
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[Ltsp-discuss] Ang: Kerberos ticket upon login

[Johan Kragsterman]

Hi!




-Finn Andersen  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Finn Andersen 
Datum: 2016-12-09 09:56
Ärende: [Ltsp-discuss] Kerberos ticket upon login

Hi!

I'm almost done setting up a ltsp in our corporate environment.
I use sssd/samba/kerberos to authenticate against Windows AD.

Screensaver unlocking is working with kerberos.
SSO with Firefox is working including corporate root ca certificate, which I 
thought was going to be the biggest problem.

The only thing left is having a kerberos ticket created upon login. Is that 
something that is possible? Does anyone know how to accomplish this? PAM-magic??




Since you use sssd, it must be sssd that handles kerberos. Perhaps pam is 
involved, but sssd is responsible to handle the pam modules. I suggest you use 
the sssd mailing lists. If you are using ubuntu, though, sssd is a little bit 
of a mess, imho. It is much easier on fedora/rhel/centos.

/Johan








Thanks,
Finn Andersen


--
Developer Access Program for Intel Xeon Phi Processors
Access to Intel Xeon Phi processor-based developer platforms.
With one year of Intel Parallel Studio XE.
Training and support from Colfax.
Order your platform today.http://sdm.link/xeonphi
_
Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
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[Ltsp-discuss] Ang: Re: problem with C-states

[Johan Kragsterman]

Hi!

-Veli-Matti Lintu <veli-matti.li...@opinsys.fi> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Veli-Matti Lintu <veli-matti.li...@opinsys.fi>
Datum: 2016-05-20 07:58
Ärende: Re: [Ltsp-discuss] problem with C-states

2016-05-19 22:26 GMT+03:00 Johan Kragsterman <johan.kragster...@capvert.se>:

Hi!


Just want to report a problem here.

Current system is Ubuntu 16.04 server virtual machine(KVM on OmniOS), latest 
LTSP from greek schools repo, fat clients: mo'bo': ASUS J1900I-C - mITX, 
chassi: Chieftec Compact Series IX-03B, 8 GB DDR3L

I been wining on this list about what I thought was a swap problem. Well, it 
wasn't.

The problem occurred right after I switched from UBU 14.04 to 16.04.

I got help to sort out ONE problem, the one with the metacity causing a reboot, 
but that wasn't my main problem.

The main problem was that ONE of my clients were freezing after 1-2 hours. And 
only that client. I couldn't understand, and thought it was a hardware problem, 
I swapped everything, and I mean EVERYTHING, even mo'bo'.

Didn't help...of coarse swapped network cable and switch port as well, power 
bord and PSU. Nothing helped...

Then I started to check the bios, and found out that C-states was enabled in 
that client, and not in the others. It was also enabled in the new mo'bo' that 
I swapped to.

So, disabled C-states and the problem was gone.

Note that this was NOT a problem in 14.04, where the problematic client ran 
fine, with C-states enabled.

I don't know if this is for Ubuntu or LTSP, I just mention it here, so people 
that perhaps get the same problem should know.






It sounds like you are hitting this kernel bug: 
https://bugzilla.kernel.org/show_bug.cgi?id=109051

We've seen this problem on laptops having Intel Celeron N2940 CPUs and setting 
the kernel parameter max_cstate=1 has made them stable so far. I haven't tried 
any J1900 boards myself. The kernel bug has been open for quite some time, so 
I'd guess that there's no quick fix coming..




Yep, you're right, this is the one! Thanks for the valuable information!

Okay, no problem for me running the C-state 1, or as it is now disabled...

Rgrds Johan





Veli-Matti








--
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For additional LTSP help,   try #ltsp channel on irc.freenode.net



--
Mobile security can be enabling, not merely restricting. Employees who
bring their own devices (BYOD) to work are irked by the imposition of MDM
restrictions. Mobile Device Manager Plus allows you to control only the
apps on BYO-devices by containerizing them, leaving personal data untouched!
https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
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For additional LTSP help,   try #ltsp channel on irc.freenode.net

[Ltsp-discuss] problem with C-states

[Johan Kragsterman]

Hi!


Just want to report a problem here.

Current system is Ubuntu 16.04 server virtual machine(KVM on OmniOS), latest 
LTSP from greek schools repo, fat clients: mo'bo': ASUS J1900I-C - mITX, 
chassi: Chieftec Compact Series IX-03B, 8 GB DDR3L

I been wining on this list about what I thought was a swap problem. Well, it 
wasn't.

The problem occurred right after I switched from UBU 14.04 to 16.04.

I got help to sort out ONE problem, the one with the metacity causing a reboot, 
but that wasn't my main problem. 

The main problem was that ONE of my clients were freezing after 1-2 hours. And 
only that client. I couldn't understand, and thought it was a hardware problem, 
I swapped everything, and I mean EVERYTHING, even mo'bo'.

Didn't help...of coarse swapped network cable and switch port as well, power 
bord and PSU. Nothing helped...

Then I started to check the bios, and found out that C-states was enabled in 
that client, and not in the others. It was also enabled in the new mo'bo' that 
I swapped to.

So, disabled C-states and the problem was gone.

Note that this was NOT a problem in 14.04, where the problematic client ran 
fine, with C-states enabled.

I don't know if this is for Ubuntu or LTSP, I just mention it here, so people 
that perhaps get the same problem should know.


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


--
Mobile security can be enabling, not merely restricting. Employees who
bring their own devices (BYOD) to work are irked by the imposition of MDM
restrictions. Mobile Device Manager Plus allows you to control only the
apps on BYO-devices by containerizing them, leaving personal data untouched!
https://ad.doubleclick.net/ddm/clk/304595813;131938128;j
_
Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:
  https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help,   try #ltsp channel on irc.freenode.net

[Ltsp-discuss] Ang: Re: Ang: Re: Ang: Re: swap -again!

[Johan Kragsterman]

Hi, Jakob!



-Jakob Unterwurzacher <jakob...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Jakob Unterwurzacher <jakob...@gmail.com>
Datum: 2016-05-08 12:55
Ärende: Re: [Ltsp-discuss] Ang: Re: Ang: Re: swap -again!

Hi Johan, ok, if you do not get messages like this

> kernel: Out of memory: Kill process 9163 (mysqld) score 511 or sacrifice child

you are not running out of memory.


No, I haven't seen anything like that...



But this looks like it could be it:
https://bugs.launchpad.net/ubuntu/+source/metacity/+bug/1573478/
And there even seems to be a fix already in xenial-proposed.

Best regards,
Jakob



You're saving my ass here, really!

Thanks a lot, I check this out

Rgrds Johan






On 08.05.2016 09:30, Johan Kragsterman wrote:
> 
> Hi,Jakob!
> 
> 
> Thanks for stepping in here...
> 
> 
> 
> -Jakob Unterwurzacher <jakob...@gmail.com> skrev: -
> Till: ltsp-discuss@lists.sourceforge.net
> Från: Jakob Unterwurzacher <jakob...@gmail.com>
> Datum: 2016-05-08 00:23
> Ärende: Re: [Ltsp-discuss] Ang: Re: swap -again!
> 
> Hi Johan, do you see out of memory messages in the kernel log?
> 
> 
> 
> I can't say I do, but these are some msg I got:
> 
> May  7 19:13:48 ltsp102 kernel: [90371.938999] metacity[29159]: segfault at 
> 16b1000 ip 7f2e5728f208 sp 7fff859af250 error 4 in 
> libcairo.so.2.11400.6[7f2e5722c000+10e000]
> May  7 19:13:48 ltsp102 gnome-session-binary[29107]: Unrecoverable failure in 
> required component metacity.desktop
> May  7 19:13:53 ltsp102 kernel: [90377.420913] block nbd9: NBD_DISCONNECT
> May  7 19:13:53 ltsp102 kernel: [90377.422049] block nbd9: Receive control 
> failed (result -32)
> May  7 19:14:19 ltsp102 gnome-session-binary[8610]: Entering running state
> 
> 
> Another strange thing I got is that another machine with the exact same 
> hardware is freezing, so that one needs to be hard-rebooted, while the one I 
> mainly use is rebooting to login screen.
> 
> Regards Johan
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> On Sat, May 7, 2016 at 9:09 PM, Johan Kragsterman 
> <johan.kragster...@capvert.se> wrote:
> 
> Hi, Alkis!
> 
> 
> -Alkis Georgopoulos <alk...@gmail.com> skrev: -
> Till: ltsp-discuss@lists.sourceforge.net
> Från: Alkis Georgopoulos <alk...@gmail.com>
> Datum: 2016-05-07 20:24
> Ärende: Re: [Ltsp-discuss] swap -again!
> 
>  From http://manpages.ubuntu.com/lts.conf:
> 
>  > NBD_SWAP
>  > boolean, default False
>  > Set this to True if you want to turn on NBD swap.
>  > If unspecified, it's automatically enabled for thin clients with
>  > less than 300 MB RAM and for fat clients with less than 800 MB RAM.
> 
> Your clients have more than 800 MB RAM, so they don't automatically get
> a swap unless you specifically set NBD_SWAP=True in lts.conf.
> 
> 
> 
> I already tried that, but it still look like this:
> 
> admin@ltsp102:~$ sudo cat /proc/swaps
> [sudo] password for admin:
> Filename                                Type            Size    Used    
> Priority
> admin@ltsp102:~$ free
>               total        used        free      shared  buff/cache   
> available
> Mem:        7582448     1802804     2236020     1461384     3543624     
> 4224156
> Swap:             0           0           0
> admin@ltsp102:~$
> 
> 
> Shouldn't it show something here if swap was configured?
> 
> 
> 
> 
> 
> Note that even if you set a swap, by default it's just 512 MB, so it
> won't save you if you think that your 8 GB of RAM isn't enough and that
> the problem is indeed lack of free memory...
> ...which I doubt. I'd suggest you look elsewhere for fixing the crashes,
> e.g. Xorg/graphics drivers or kernel issues.
> 
> 
> 
> 
> 
> Well, graphics drivers should be fine, since I ran the exact same hardware on 
> 14.04, kernel issues I don't know about.
> 
> But I've seen a discussion about the authfile = /etc/ltsp/nbd-server.allow
> 
> People still complain about this, last post was 16.03.28. This file is 
> refered to by the swap.conf, but doesn't not exist. Of coarse I can create it 
> myself, but I don't actually know what to put in there...
> 
> 
> 
> 
> --
> Alkis Georgopoulos
> LTSP developer
> Professional LTSP support: alk...@gmail.com
> 
> 
> On 06/05/2016 11:37 , Johan Kragsterman wrote:
>>
>> Hi!
>>
>>
>> I tried asking a question about swap the other day, but nobody seems to 
>> answer...
>>
>> So I try again:
>>
>> There seems to be no swap configured for my fat clients, since it looks like 
>> this:
>>
>> admin@ltsp102:

[Ltsp-discuss] Ang: Re: Ang: Re: swap -again!

[Johan Kragsterman]

Hi,Jakob!


Thanks for stepping in here...



-Jakob Unterwurzacher <jakob...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Jakob Unterwurzacher <jakob...@gmail.com>
Datum: 2016-05-08 00:23
Ärende: Re: [Ltsp-discuss] Ang: Re: swap -again!

Hi Johan, do you see out of memory messages in the kernel log?



I can't say I do, but these are some msg I got:

May  7 19:13:48 ltsp102 kernel: [90371.938999] metacity[29159]: segfault at 
16b1000 ip 7f2e5728f208 sp 7fff859af250 error 4 in 
libcairo.so.2.11400.6[7f2e5722c000+10e000]
May  7 19:13:48 ltsp102 gnome-session-binary[29107]: Unrecoverable failure in 
required component metacity.desktop
May  7 19:13:53 ltsp102 kernel: [90377.420913] block nbd9: NBD_DISCONNECT
May  7 19:13:53 ltsp102 kernel: [90377.422049] block nbd9: Receive control 
failed (result -32)
May  7 19:14:19 ltsp102 gnome-session-binary[8610]: Entering running state


Another strange thing I got is that another machine with the exact same 
hardware is freezing, so that one needs to be hard-rebooted, while the one I 
mainly use is rebooting to login screen.

Regards Johan










On Sat, May 7, 2016 at 9:09 PM, Johan Kragsterman 
<johan.kragster...@capvert.se> wrote:

Hi, Alkis!


-Alkis Georgopoulos <alk...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Alkis Georgopoulos <alk...@gmail.com>
Datum: 2016-05-07 20:24
Ärende: Re: [Ltsp-discuss] swap -again!

 From http://manpages.ubuntu.com/lts.conf:

 > NBD_SWAP
 > boolean, default False
 > Set this to True if you want to turn on NBD swap.
 > If unspecified, it's automatically enabled for thin clients with
 > less than 300 MB RAM and for fat clients with less than 800 MB RAM.

Your clients have more than 800 MB RAM, so they don't automatically get
a swap unless you specifically set NBD_SWAP=True in lts.conf.



I already tried that, but it still look like this:

admin@ltsp102:~$ sudo cat /proc/swaps
[sudo] password for admin:
Filename                                Type            Size    Used    Priority
admin@ltsp102:~$ free
              total        used        free      shared  buff/cache   available
Mem:        7582448     1802804     2236020     1461384     3543624     4224156
Swap:             0           0           0
admin@ltsp102:~$


Shouldn't it show something here if swap was configured?





Note that even if you set a swap, by default it's just 512 MB, so it
won't save you if you think that your 8 GB of RAM isn't enough and that
the problem is indeed lack of free memory...
...which I doubt. I'd suggest you look elsewhere for fixing the crashes,
e.g. Xorg/graphics drivers or kernel issues.





Well, graphics drivers should be fine, since I ran the exact same hardware on 
14.04, kernel issues I don't know about.

But I've seen a discussion about the authfile = /etc/ltsp/nbd-server.allow

People still complain about this, last post was 16.03.28. This file is refered 
to by the swap.conf, but doesn't not exist. Of coarse I can create it myself, 
but I don't actually know what to put in there...




--
Alkis Georgopoulos
LTSP developer
Professional LTSP support: alk...@gmail.com


On 06/05/2016 11:37 , Johan Kragsterman wrote:
>
> Hi!
>
>
> I tried asking a question about swap the other day, but nobody seems to 
> answer...
>
> So I try again:
>
> There seems to be no swap configured for my fat clients, since it looks like 
> this:
>
> admin@ltsp102:~$ sudo cat /proc/swaps
> Filename
> admin@ltsp102:~$
>
> Type  Size    Used    Priority
> admin@ltsp102:~$ sudo free
>                total        used        free      shared  buff/cache   
> available
> Mem:        7582448     1976300     1930544     1416000     3675604     
> 4099192
> Swap:             0           0           0
> admin@ltsp102:~$
>
>
> nbd-server is up and running, connections are established:
>
> admin@ltsp102:~$ netstat -tu | grep nbd
> tcp        0      0 192.168.20.102:55232    server:nbd              
> ESTABLISHED
> tcp        0      0 192.168.20.102:33850    server:nbd              CLOSE_WAIT
> tcp        0      0 192.168.20.102:55366    server:nbd              CLOSE_WAIT
>
>
> System is an LTSP server KVM virtual machine on OmniOS with enough resources, 
> and the fat clients are quad core celerons with 8 GB DDR3 memory. 8 GB is of 
> coarse a lot, but there seem to be memory loss that causes reboot to login 
> screen, or get the entire client to freeze, which forces a hard reboot.
>
> I checked some other resources, if I should configure swap through ldm.conf, 
> but since I didn't need that in 14.04, I don't understand why I should need 
> it now...? There is no ldm.conf file in /var/lib/tftboot/"myclient", and it 
> was not in 14.04, so this must all be default then.
>
> Only thing I changed since 1

[Ltsp-discuss] Ang: Re: Ang: Re: swap -again!

[Johan Kragsterman]

Hi!


-Alkis Georgopoulos  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Alkis Georgopoulos 
Datum: 2016-05-08 08:31
Ärende: Re: [Ltsp-discuss] Ang: Re: swap -again!

On 08/05/2016 01:21 , Jakob Unterwurzacher wrote:
> Shouldn't it show something here if swap was configured?

It's possible that your lts.conf isn't in the right place or has a 
syntax error etc etc.

admin@ltsp102:~$ grep -r NBD_SWAP /var/cache/ltsp
on the client should tell you if it is so.





admin@ltsp102:~$ sudo grep -r NBD_SWAP /var/cache/ltsp
admin@ltsp102:~$ 


Shows nothing...does that mean there is no nbd swap, or does it mean there is 
an error in lts.conf? I only created lts.conf for this reason, so the only line 
that is in it is that for NBD_SWAP=True







 > Well, graphics drivers should be fine, since I ran the exact
 > same hardware on 14.04, kernel issues I don't know about.

I do have clients that work on 12.04, crash on 14.04, work on 16.04 etc, 
due to changes in graphics drivers. Same goes for the kernel.




Graphic is intel SoC embedded celeron J1900. Shouldn't cause any problems, 
should it?





 > But I've seen a discussion about the authfile = 
/etc/ltsp/nbd-server.allow

That's not an issue unless you actually try to create and use that file, 
at which time the bug appears.

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[Ltsp-discuss] Ang: Re: swap -again!

[Johan Kragsterman]

Hi, Alkis!


-Alkis Georgopoulos <alk...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Alkis Georgopoulos <alk...@gmail.com>
Datum: 2016-05-07 20:24
Ärende: Re: [Ltsp-discuss] swap -again!

 From http://manpages.ubuntu.com/lts.conf:

 > NBD_SWAP
 > boolean, default False
 > Set this to True if you want to turn on NBD swap.
 > If unspecified, it's automatically enabled for thin clients with
 > less than 300 MB RAM and for fat clients with less than 800 MB RAM.

Your clients have more than 800 MB RAM, so they don't automatically get 
a swap unless you specifically set NBD_SWAP=True in lts.conf.



I already tried that, but it still look like this:

admin@ltsp102:~$ sudo cat /proc/swaps
[sudo] password for admin: 
FilenameTypeSizeUsedPriority
admin@ltsp102:~$ free
  totalusedfree  shared  buff/cache   available
Mem:7582448 1802804 2236020 1461384 3543624 4224156
Swap: 0   0   0
admin@ltsp102:~$ 


Shouldn't it show something here if swap was configured?





Note that even if you set a swap, by default it's just 512 MB, so it 
won't save you if you think that your 8 GB of RAM isn't enough and that 
the problem is indeed lack of free memory...
...which I doubt. I'd suggest you look elsewhere for fixing the crashes, 
e.g. Xorg/graphics drivers or kernel issues.





Well, graphics drivers should be fine, since I ran the exact same hardware on 
14.04, kernel issues I don't know about.

But I've seen a discussion about the authfile = /etc/ltsp/nbd-server.allow

People still complain about this, last post was 16.03.28. This file is refered 
to by the swap.conf, but doesn't not exist. Of coarse I can create it myself, 
but I don't actually know what to put in there...




--
Alkis Georgopoulos
LTSP developer
Professional LTSP support: alk...@gmail.com


On 06/05/2016 11:37 , Johan Kragsterman wrote:
>
> Hi!
>
>
> I tried asking a question about swap the other day, but nobody seems to 
> answer...
>
> So I try again:
>
> There seems to be no swap configured for my fat clients, since it looks like 
> this:
>
> admin@ltsp102:~$ sudo cat /proc/swaps
> Filename
> admin@ltsp102:~$
>
> Type  SizeUsedPriority
> admin@ltsp102:~$ sudo free
>                total        used        free      shared  buff/cache   
> available
> Mem:        7582448     1976300     1930544     1416000     3675604     
> 4099192
> Swap:             0           0           0
> admin@ltsp102:~$
>
>
> nbd-server is up and running, connections are established:
>
> admin@ltsp102:~$ netstat -tu | grep nbd
> tcp        0      0 192.168.20.102:55232    server:nbd              
> ESTABLISHED
> tcp        0      0 192.168.20.102:33850    server:nbd              CLOSE_WAIT
> tcp        0      0 192.168.20.102:55366    server:nbd              CLOSE_WAIT
>
>
> System is an LTSP server KVM virtual machine on OmniOS with enough resources, 
> and the fat clients are quad core celerons with 8 GB DDR3 memory. 8 GB is of 
> coarse a lot, but there seem to be memory loss that causes reboot to login 
> screen, or get the entire client to freeze, which forces a hard reboot.
>
> I checked some other resources, if I should configure swap through ldm.conf, 
> but since I didn't need that in 14.04, I don't understand why I should need 
> it now...? There is no ldm.conf file in /var/lib/tftboot/"myclient", and it 
> was not in 14.04, so this must all be default then.
>
> Only thing I changed since 14.04 is that I now use another default GW, I 
> don't go through the LTSP server anymore. But the server responds to the 
> "server" ping in the client network, so I can't see that as a problem.
>
> So I would really appreciate some input here...
>
>
> Best regards from/Med vänliga hälsningar från
>
> Johan Kragsterman
>
> Capvert
>


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[Ltsp-discuss] swap -again!

[Johan Kragsterman]

Hi!


I tried asking a question about swap the other day, but nobody seems to 
answer...

So I try again:

There seems to be no swap configured for my fat clients, since it looks like 
this:

admin@ltsp102:~$ sudo cat /proc/swaps
Filename
admin@ltsp102:~$

TypeSizeUsedPriority
admin@ltsp102:~$ sudo free
  totalusedfree  shared  buff/cache   available
Mem:7582448 1976300 1930544 1416000 3675604 4099192
Swap: 0   0   0
admin@ltsp102:~$


nbd-server is up and running, connections are established:

admin@ltsp102:~$ netstat -tu | grep nbd
tcp0  0 192.168.20.102:55232server:nbd  ESTABLISHED
tcp0  0 192.168.20.102:33850server:nbd  CLOSE_WAIT 
tcp0  0 192.168.20.102:55366server:nbd  CLOSE_WAIT 


System is an LTSP server KVM virtual machine on OmniOS with enough resources, 
and the fat clients are quad core celerons with 8 GB DDR3 memory. 8 GB is of 
coarse a lot, but there seem to be memory loss that causes reboot to login 
screen, or get the entire client to freeze, which forces a hard reboot.

I checked some other resources, if I should configure swap through ldm.conf, 
but since I didn't need that in 14.04, I don't understand why I should need it 
now...? There is no ldm.conf file in /var/lib/tftboot/"myclient", and it was 
not in 14.04, so this must all be default then.

Only thing I changed since 14.04 is that I now use another default GW, I don't 
go through the LTSP server anymore. But the server responds to the "server" 
ping in the client network, so I can't see that as a problem.

So I would really appreciate some input here...


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


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[Ltsp-discuss] Ubuntu 16.04 no swap?

[Johan Kragsterman]

Hi!I installed ubu 16.04 server daily release about a week before the final release, and started to deploy my new environment, consisting on a KVM virtual machine(on OmniOS), and fat clients. I've been running about the same environment since the 12.04, and it have been working very well. I pushed this to production a couple of days after the final release of 16.04.Now though, I experienced som problems with sudden shutdowns under workloads of primarily graphics, but also working with file manager.It seems like memory starvation problems, and when I check out the swap config I get this:admin@ltsp102:~$ sudo cat /proc/swapsFilenameType		Size	Used	Priorityadmin@ltsp102:~$ sudo free              total        used        free      shared  buff/cache   availableMem:        7582448     1976300     1930544     1416000     3675604     4099192Swap:             0           0           0admin@ltsp102:~$ Since I never done this in an LTSP environment before, I'm not sure of the result...but it seems like there is no swap configured...?Is that supposed to be configured by the client config build script, or...?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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[Ltsp-discuss] Ang: proxyDHCP with two different chroots

[Johan Kragsterman]

Hi!


-Fatih ER  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Fatih ER 
Datum: 2016-03-29 10:19
Ärende: [Ltsp-discuss] proxyDHCP with two different chroots

Hi there..

Im using LTSP for a long time without any problems. But with the Ubuntu 
16.04s arrival coming I decided to move forward to new distribution. So 
started some beta server to get ready for production. Everything went well. It 
is great to see -after a long time- again how easy to set up a working LTSP 
System. Ubuntu now has lastest packages which makes me happy.

After updating LTSP, I decided to move further and change the some networking 
settings. And decided to move proxyDHCP to make my pfSense Router do the DHCP 
stuff, which leads to a problem because I got Two chroots, one for amd64 and 
one for i386. And i386 chroot got different distribution (--dist trusty) 
because of sis-media video graphic drivers.

Checked some forums and searched the web but I couldnt find out how to 
solve this.

Anyone did something like this before? 




I run LTSP since several yrs with different chroots, and since perhaps 3-4 yrs 
now I run it as a virtual machine. That gives me more opportunities. I wouldn't 
run LTSP with dnsmasq(I suppose that is what you mean with proxydhcp?)/pfsense 
with multiple chroots if I didn't have a LOT OF thin clients!

I think it is much more easy to use the normal isc-dhcp-server. But perhaps 
that is because I haven't been looking into the dnsmasq very much, but at a 
glance it seems complicated to me...and to use PfSense with different chroots 
means you need to go in and hack in the config file in PfSense, which is risky 
to do, because you might compromise the web interface functionality.

I also use PfSense, but that one too as a virtual machine. I use different 
virtual networks from PfSense, with or without dhcp, for beeing able to handle 
different tasks, like the thin client network.

So in my case, I need only one box for an entire small datacenter. I would 
really recommend this setup.

Rgrds Johan




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[Ltsp-discuss] Ang: Re: VMware resource requirements for hosting thin clients?

[Johan Kragsterman]

Hi!


-Jeff Siddall  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Jeff Siddall 
Datum: 2016-03-03 16:25
Ärende: Re: [Ltsp-discuss] VMware resource requirements for hosting thin 
clients?

On 03/02/2016 03:00 PM, Mike Cammilleri wrote:
> So LTSP memory/processing requirements can vary widely depending on your
> environment and what your users are doing with it. I get that. But I was
> wondering if someone really had a finer sense on what the requirements
> are for the following situation.

Sorry, but I don't have an answer for something of your scale.  I run at 
most 30 concurrent users, many are kiosks and only get used intermittently.

However, my modest 4 core CPU and 8 GB RAM server handles that easily. 
That said it doesn't take many runaway processes (Adobe and Mozilla I am 
looking at you) to suck up those 4 cores.

Also of concern is the NIC.  One full screen video stream can easily eat 
up 500+ Mbps so only two users watching videos means a saturated 1 Gbps 
NIC.  Consider putting clients on throttled ports (ex: 10/100 Mbps 
ports) or going with 10 Gbps NICs or maybe just blocking access to 
obvious resource intensive sites.

Audio is less bad but still significant as each stereo 48 kHz stream is 
a couple of Mbps.

So under "normal" load you might get 100 users on a modest server, but 
you need to be very diligent about monitoring for resource hogs.

> I think it comes down to which is a better scheduler? VMware or Ubuntu?
> If VMware better utilizes the host resources for the LTSP Server VM and
> the strain the clients put on it, then sure, maybe we'll dedicate one of
> our VMware hosts just to this task. But if Ubuntu is a better resource
> scheduler than VMware then might as well just stick with installing
> Ubuntu directly on the machine and skip any virtualization.

That one is easy: a hypervisor will never give you better performance 
than the bare metal server.  Period.  VMs are for flexibility not 
performance.  If you don't need to easily move your LTSP server to 
different hardware, or share the host resources among multiple guests 
then you don't need a VM infrastructure.

That said I am currently working on moving my LTSP server to a KVM guest 
primarily for reasons of resiliency.  If I run into any issues I will 
simply put it back on bare metal.

Jeff





There is a huge difference in the requirements for the server between running 
fat or thin clients. I don't really see the meaning with running thin clients 
anymore, since the hardware that works splendid with fat clients getting so 
cheap.

At home I run Ubuntu/LTSP as a KVM virtual machine on OmniOS(Illumos dist), 
which give me ZFS in the bottom. I do it for resiliency and manageability 
reasons, and because I like OmniOS, as well as I like to have a VM 
infrastructure at hand. I got a lot of other stuff running on that machine in 
zones or in VM's.

If you run fat clients, you don't need to pass through the server, you don't 
even need it to deliver /home if you don't want, you can get that from another 
nfs server if you like.

You can add your users from LDAP, either to the server or directly to your fat 
clients(with some hack). With fat clients you don't need to bother about any 
nic's, you just see to you got a backbone that support your needs.

The fat client H/W I use is some asus mobo with a quad core celeron, and 8 GB 
ram in a very small chenbro chassi. Running 64-bit img. I believe costs/client 
is like $250. It is very fast and has excellent graphics! Lst time I rebooted 
the OmniOS server was about 6 months ago. The LTSP VM I rebooted about 2 months 
ago.

Regards Johan



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For 

[Ltsp-discuss] Ang: Re: ltsp uefi client ?

[Johan Kragsterman]

Hi!


-Truth  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Truth 
Datum: 2016-01-12 09:53
Ärende: Re: [Ltsp-discuss] ltsp uefi client ?

On 11.01.2016 21:10, richard kweskin wrote:
> On 2016-01-10 21:22, Truth wrote:
>> On 09.01.2016 17:04, Truth wrote:
>>> Hi,
>>> I have installed a ltsp-pnp server on Debian jessie and was able to
>>> connect from to different clients.
>>> So far everything is great - and many thanks to the ltsp development 
>>> team.
>>> However, my problem is that I still can not connect from an UEFI 
>>> client
>>> to the ltsp-server.
>>>
>>> In order to solve the problem ...
>>> (compare
>>>
>>> https://forums.fogproject.org/topic/5750/dnsmasq-proxy-booting-with-uefi/22)
>>>
>>> ... I downloded ipxe
>>> apt-get install ipxe
>>>
>>> ... put two additional lines into 
>>> /etc/dnsmasq.d/ltsp-server-dnsmasq.conf
>>> dhcp-vendorclass=uefi,PXEClient
>>> dhcp-boot=net:uefi,/ltsp/i386/ipxe.0
>>>
>>> ... and put some symlinks into /var/lib/tftpboot/ltsp/i386/
>>> ipxe.0 -> /boot/ipxe.efi
>>> ipxe.iso -> /usr/lib/ipxe/ipxe.iso
>>> ipxe.lkrn -> /boot/ipxe.lkrn
>>> ipxe.pxe -> /usr/lib/ipxe/ipxe.pxe
>>> undionly.kkpxe -> /usr/lib/ipxe/undionly.kkpxe
>>> undionly.kpxe -> /usr/lib/ipxe/undionly.kpxe
>>>
>>> Is there something else to do?
>>> The logfile (see below) does not realy tell me what to do ...
>>>
>>> Many thanks in advance.
>>> Truth
>>>
>>>
>>>
>>> After restarting dnsmasq and trying to connect from the UEFI client 
>>> I
>>> get the following messages (dmesg):
>>> Jan  9 16:39:01 ltsp-server dnsmasq[566]: beende nach Empfang von 
>>> SIGTERM
>>> Jan  9 16:39:01 ltsp-server dnsmasq[1447]: dnsmasq: Syntaxprüfung 
>>> OK.
>>> Jan  9 16:39:01 ltsp-server dnsmasq[1456]: gestartet, Version 2.72, 
>>> DNS
>>> abgeschaltet
>>> Jan  9 16:39:01 ltsp-server dnsmasq[1456]: Übersetzungsoptionen: 
>>> IPv6
>>> GNU-getopt DBus i18n IDN DHCP DHCPv6 no-Lua TFTP conntrack ipset 
>>> auth
>>> DNSSEC loop-detect
>>> Jan  9 16:39:01 ltsp-server dnsmasq-dhcp[1456]: DHCP, Proxy im 
>>> Subnetz
>>> 192.168.2.0
>>> Jan  9 16:39:01 ltsp-server dnsmasq-dhcp[1456]: DHCP, IP-Bereich
>>> 192.168.67.20 -- 192.168.67.250, Lease Zeit8h
>>> Jan  9 16:39:01 ltsp-server dnsmasq-tftp[1456]: TFTP Wurzel
>>> ist/var/lib/tftpboot/
>>> Jan  9 16:39:16 ltsp-server NetworkManager[467]:  (eth1): link
>>> connected
>>> Jan  9 16:39:17 ltsp-server avahi-daemon[488]: Joining mDNS 
>>> multicast
>>> group on interface eth1.IPv6 with address xxyy::xxy:xxyy:xxyy:xxyy.
>>> Jan  9 16:39:17 ltsp-server avahi-daemon[488]: New relevant 
>>> interface
>>> eth1.IPv6 for mDNS.
>>> Jan  9 16:39:17 ltsp-server avahi-daemon[488]: Registering new 
>>> address
>>> record for xxyy::xxy:xxyy:xxyy:xxyy on eth1.*.
>>> Jan  9 16:39:17 ltsp-server NetworkManager[467]:  (eth1): link
>>> disconnected
>>> Jan  9 16:39:20 ltsp-server NetworkManager[467]:  (eth1): link
>>> connected
>>> Jan  9 16:39:23 ltsp-server dnsmasq-dhcp[1456]: DHCPDISCOVER(eth1)
>>> xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:23 ltsp-server dnsmasq-dhcp[1456]: DHCPOFFER(eth1)
>>> 192.168.67.64 xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:26 ltsp-server dnsmasq-dhcp[1456]: DHCPREQUEST(eth1)
>>> 192.168.67.64 xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:26 ltsp-server dnsmasq-dhcp[1456]: DHCPACK(eth1)
>>> 192.168.67.64 xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:26 ltsp-server dnsmasq-tftp[1456]: Fehler 8 User 
>>> aborted
>>> the transfer von 192.168.67.64 empfangen
>>> Jan  9 16:39:26 ltsp-server dnsmasq-tftp[1456]: konnte
>>> /var/lib/tftpboot/ltsp/i386/ipxe.0 nicht an 192.168.67.64 senden
>>> Jan  9 16:39:27 ltsp-server dnsmasq-tftp[1456]:
>>> /var/lib/tftpboot/ltsp/i386/ipxe.0 an 192.168.67.64 verschickt
>>> Jan  9 16:39:27 ltsp-server NetworkManager[467]:  (eth1): link
>>> disconnected
>>> Jan  9 16:39:29 ltsp-server NetworkManager[467]:  (eth1): link
>>> connected
>>> Jan  9 16:39:30 ltsp-server dnsmasq-dhcp[1456]: DHCPDISCOVER(eth1)
>>> xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:30 ltsp-server dnsmasq-dhcp[1456]: DHCPOFFER(eth1)
>>> 192.168.67.64 xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:30 ltsp-server dnsmasq-dhcp[1456]: DHCPREQUEST(eth1)
>>> 192.168.67.64 xy:yx:yx:yx:yx:yx
>>> Jan  9 16:39:30 ltsp-server dnsmasq-dhcp[1456]: DHCPACK(eth1)
>>> 192.168.67.64 xy:yx:yx:yx:yx:yx
>>> ...
>>>
>>> On the client side I get:
>>>
>>> iPXE 1.0.0+git-20141004.86285d1-1 -- OPen Source Network Boot 
>>> Firmware
>>> -- http://ipxe.org
>>> Features: VLAN HTTP DNS TFTP EFI Menu
>>>
>>> net0: xy:yx:yx:yx:yx:yx using rtl8168 on PCI02:00.2 (open)
>>>   [Link:up, TX:0 TXE:0 RX:0 RXE:0]
>>> Configuring (net0 xy:yx:yx:yx:yx:yx)... ok
>>> net0: 192.168.67.64/255.255.255.0 gw 192.168.67.1
>>> Next server: 192.168.67.1
>>> Filename: /ltsp/i386/ipxe.0
>>> Root path: /opt/ltsp/i386
>>> tftp://192.168.67.1/ltsp/i386/ipxe.0... ok
>>> iPXE initialising devices...ok
>>>
>>>
>>> iPXE 1.0.0+git-20141004.86285d1-1 -- OPen Source Network Boot 
>>> Firmware
>>> -- http://ipxe.org
>>> Features: VLAN HTTP DNS TFTP EFI 

[Ltsp-discuss] Ang: LTSP Network Printing On LTSP Fat Clients.

[Johan Kragsterman]

Hi!


-Mahmoud Ramadan  skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Mahmoud Ramadan 
Datum: 2015-12-15 13:08
Ärende: [Ltsp-discuss] LTSP Network Printing On LTSP Fat Clients.

Hi dears,
I need to setup network printing on LTSP fat client...can anyone explain how to 
achieve this please.
Best Regards,




You need to edit config files in /etc/cups in the client chroot. What I 
remember, the files I changed was the "cups-browsed.conf", and the 
"printers.conf". If you do it right the printer/-s will show up in your GUI 
printer config.

I remember I had some issues here...hmmm...yeah, I think this was lost during a 
client chroot upgrade, and I had to redo it again...when you got it working, 
take a backup on the config files!

Rgrds Johan















Mahmoud Ramadan Ali

Network and VOIP Specialist.

Mobil: (+2) 01276877112

Blog | Website | LinkedIn

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[Ltsp-discuss] Ang: Re: Ang: LTSP Network Printing On LTSP Fat Clients.

[Johan Kragsterman]

Hi!Please don't top post...-Mahmoud Ramadan <mahmoud.ramadan@gmail.com> skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Mahmoud Ramadan <mahmoud.ramadan@gmail.com>Datum: 2015-12-15 14:25Ärende: Re: [Ltsp-discuss] Ang: LTSP Network Printing On LTSP Fat Clients.What configuration changes u made and what files ? and did u tried to add printer using #lpadmin ?If you ask questions on the list, please read the answers before you ask again...I already answered you which files I used, you find them further down in my answer...If you configure the printer in the server, check out the configuration files under /etc/cups in the server , and compare them to the files in your client chroot under /etc/cups.JohanBest Regards,Mahmoud Ramadan AliNetwork and VOIP Specialist.

Mobil: (+2) 01276877112Blog | Website | LinkedIn
On Tue, Dec 15, 2015 at 2:23 PM, Johan Kragsterman <johan.kragster...@capvert.se> wrote:Hi!


-Mahmoud Ramadan <mahmoud.ramadan@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Mahmoud Ramadan <mahmoud.ramadan@gmail.com>
Datum: 2015-12-15 13:08
Ärende: [Ltsp-discuss] LTSP Network Printing On LTSP Fat Clients.

Hi dears,
I need to setup network printing on LTSP fat client...can anyone explain how to achieve this please.
Best Regards,
You need to edit config files in /etc/cups in the client chroot. What I remember, the files I changed was the "cups-browsed.conf", and the "printers.conf". If you do it right the printer/-s will show up in your GUI printer config.

I remember I had some issues here...hmmm...yeah, I think this was lost during a client chroot upgrade, and I had to redo it again...when you got it working, take a backup on the config files!

Rgrds JohanMahmoud Ramadan Ali

Network and VOIP Specialist.

Mobil: (+2) 01276877112

Blog | Website | LinkedIn

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[Ltsp-discuss] Ang: Re: altering some things in ltsp...

[Johan Kragsterman]

Hi!

-Vagrant Cascadian <vagr...@debian.org> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Vagrant Cascadian <vagr...@debian.org>
Datum: 2015-09-18 20:51
Ärende: Re: [Ltsp-discuss] altering some things in ltsp...

On 2015-09-18, Johan Kragsterman wrote:
> I want fat clients that boots the normal PXE/TFTP/initrd way.

> BUT: I do not want the /home directory to be mounted to the LTSP
> server, but to another (nfs) server.

Specify NFS_HOME=ip.of.server:/path/to/homedir in lts.conf.


> And I do not want users from the LTSP server, but from LDAP.

To add support to LDM you would basically need to rewrite it, as the
only authentication method uses ssh to the server (well, I guess it also
has an RDP plugin, so maybe you could write another plugin).

Instead, you'd want to switch to LightDM, GDM or KDM, and configure PAM
to authenticate against LDAP. Supporting a standard display manager by
using PAM is in the plans for LTSP6... but development on that is
largely stalled at the moment; hope to stir up some activity on that
soon.

On Debian/Ubuntu, Currently, you pretty much need some hackish
workarounds in lts.conf to support an alternate display manager:

 KEEP_SYSTEM_SERVICES=lightdm
 DEFAULT_DISPLAY_MANAGER=/usr/sbin/lightdm
 SCREEN_06=noaction

And you need a simple script that does nothing on the client.
/etc/ltsp/screen.d/noaction:

 #!/bin/sh
 echo pausing
 read pause


> Of coarse I need to install some PAM modules in the chroot, and change
> nsswitch.conf.

Yup. Since LDAP implementations vary greatly, just find documentation on
how to autenticate against LDAP for standalone disked workstations, and
mimic the instructions on your fat client installation. It should work
the same once you've gotten rid of LDM.


> (As a second step in this project, I'd like the whole image to be
> installed in a ram drive on the client, but that is something I can
> discuss in later stages)

That's trivial. I implemented a proof of concept in the Debian/Ubuntu's
ltsp initramfs-tools init-bottom/ltsp hook. The variable to set is
LTSP_NBD_TO_RAM=true. I don't think it can be set from lts.conf; might
need to hard-code it in the initramfs-tools configuration. It could use
some cleanup...


live well,
  vagrant



Thanks, Vagrant, that's EXACTLY what I wanted and needed to know!

Regards Johan
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[Ltsp-discuss] altering some things in ltsp...

[Johan Kragsterman]

Hi!


I would like to use ltsp fat clients(which I presently do, and have done for 
quite a few yrs), but free them from the "influence" of the LTSP server.

I have mailed about this subject before, but I believe I haven't made myself 
understood...perhaps I haven't been clear myself about what I want as well...

Now, though, I believe I know what I want, at least as a first step.

I want fat clients that boots the normal PXE/TFTP/initrd way.

BUT: I do not want the /home directory to be mounted to the LTSP server, but to 
another (nfs) server. And I do not want users from the LTSP server, but from 
LDAP. I only want an admin user in the chroot/image as a root user, all other 
users should be picked up from ldap.

I believe, to achieve this, I need to alter some(many?) scripts, and the 
questions are which? I would think LDM scripts, for picking users...? Mount 
scripts for /home...? Of coarse I need to install some PAM modules in the 
chroot, and change nsswitch.conf.

Any opinions and thought about this is wellcome...

Is this something someone seen before? I believe I seen something similar from 
Ivan mincik?

(As a second step in this project, I'd like the whole image to be installed in 
a ram drive on the client, but that is something I can discuss in later stages)


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


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[Ltsp-discuss] Ang: Re: altering some things in ltsp...

[Johan Kragsterman]

Hi!


-andrea biancalana <andrea.biancal...@gmail.com> skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: andrea biancalana <andrea.biancal...@gmail.com>
Datum: 2015-09-18 18:08
Ärende: Re: [Ltsp-discuss] altering some things in ltsp...

il giorno Fri, 18 Sep 2015 11:02:28 +0200  Johan Kragsterman 
<johan.kragster...@capvert.se> ha scritto:

> BUT: I do not want the /home directory to be mounted to the LTSP server, but 
> to another (nfs) server. And I do not want users from the LTSP server, but 
> from LDAP. I only want an admin user in the chroot/image as a root user, all 
> other users should be picked up from ldap.

I have users from an LTSP server which is client of an LDAP server




But then I guess you provide the users to the LTSP server, right? And when you 
boot the clients, LDM finds them as users on the server?

I DO NOT WANT the users of my fat clients to be present on the server, I want 
them ONLY to be users in the fat client, DIRECTLY provided by LDAP.

Rgrds Johan

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[Ltsp-discuss] Ang: Fatclient when network / PXE booting is not possible

[Johan Kragsterman]

Hi!Nice!DId you read my last mail with subject "lean and clean LTSP"? It sounds like you got inspired of that mail...?I would like a system that is serving a diskless client an image via PXE/TFTP, that builds a RAM drive in the client computer, and connects and mount  /home via nfs. Now a days RAM is cheap, so it is no problem to use that space in RAM that is needed.I would like a server like LTSP to serve the image, and I want to be able to update/rebuild/develope the image centrally.Regards Johan-Valtteri Suojanen  skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Valtteri Suojanen Datum: 2015-09-11 14:10Ärende: [Ltsp-discuss] Fatclient when network / PXE booting is not possible
This is not a LTSP client and image doesn't require a network connection. This is designed for laptops that start the image locally. You can create and use the same ltsp client chroot image on server for both localboot clients (laptops) and ltsp fatclients. User is expecting the same image as he/she gets in the LTSP network at office/school. One benefit of network/PXE booting is that you can update the client image once to all LTSP clients/users.  For testing purposes I started finding a way to get the localboot clients connecting every once in while securely to ltsp server or a separate image server. This allows laptop (or user) to download and update needed images. I have created a special three partition layout to update & rollback the images so that users don't have to manually go download new image or configure new settings when new image is stored on the disk. My goal was automating the update and rollback. The update & rollback process uses some very simple shell scripts in the chroot image / initramfs image. 

https://bitbucket.org/vsuojanen/root-updates/wiki/Homeyes, it's very far from LTSP thin clients, it's just one expiriment to boot/update local images in clients. 
It should be possible to continue developing the idea further if anyone is interested and I'm sure there are already people doing similar (and bigger) in their own multi-user Linux server environment. 

Is the idea of localboot images worth to use further in LTSP project ? 


Short overview how to set up the client localboot with your fatclient image:Using localboot requires in chroot image a local user (guest/username), screen session and session settingslts.conf[default]
SCREEN_04 = "shell"
SCREEN_05 = "xterm"
SCREEN_07 = "localboot"/usr/share/ltsp/screen.d/localboot
#!/bin/sh/usr/sbin/lightdm
#/usr/sbin/gdmHow do you stop LTSP boot in client ?Here is one workaround to solve this problem in ubuntu 14.04:
(this could work also with Debian)Customize initramfs image in client chroot image (e.x. /opt/ltsp/i386)/usr/share/initramfs-tools/init
export serverip=/usr/share/initramfs-tools/init-premount/udhcp
# Exit if an LTSP boot was not requested
grep -Eqsw "init=/sbin/init-ltsp|ltsp" /proc/cmdline || exit 0grep -Eqsw "serverip=127.0.0.1" /proc/cmdline && exit 0Remember to update initramfs: update-initramfs -uCreating the image and setup the local boot devieFinally:
ltsp-update-imageDefault path for the chroot /boot is in /opt/ltsp/i386/bootCopy /opt/ltsp/i386/boot/vmlinuz and /opt/ltsp/i386/boot/initrd.img to laptop hard drive or USB disk.Copy the client image i386.img to laptop hard drive or USB disk in a safely named location e.x.  /Boot/LTSPThe bootloader configuration (how you start the laptop image) depends on the boot device and bootloader.

e.x. Configuring USB and image loading with syslinux/extlinuxInstall syslinux/extlinux:sudo apt-get install extlinux mtools
sudo fdisk -l (tarkista tulosteesta usb-tikun laitenimi)

Unmount the USB device and run:
WRONG DEVICE NAME CAN DESTROY YOUR DATA!sudo syslinux /dev/sdX1 (sdX1 = device/partition)Make sure the UBS is bootable. Write MBR to beginning of the disk and set active partition. dd conv=notrunc bs=440 count=1 if=mbr.bin of=/dev/sdX
parted /dev/sdX set 1 boot onfdisk, sfdisk or any other partitioning tool works here as good as parted. Copy /opt/ltsp/i386/boot/vmlinuz and /opt/ltsp/i386/boot/initrd.img to USB boot device root direcctory Create syslinux.cfgDEFAULT linux
LABEL linux
SAY Now booting the kernel from SYSLINUX...
KERNEL vmlinuz
APPEND ro initrd=initrd.img init=/sbin/init-ltsp root=/dev/sda2 rootflags=ro loop=/Boot/LTSP/i386.img serverip=127.0.0.1USB booting with grub?
Someone told me that with grub you can load Linux kernel and initrd from inside the loop device (i386.img). I hope I have time to test grub in some point and it sure looks like a good option.--_Ltsp-discuss mailing list.   To un-subscribe, or change prefs, goto:      

[Ltsp-discuss] very lean and clean ltsp

[Johan Kragsterman]

Hi!


I have had this idea for a while now, and I would like to bring it up to this 
discussion list.

I would like to have an LTSP server that ONLY serves fat clients, and ONLY 
provides the tftp and chroot services. No dhcp service, no user service, I 
would like to add users from LDAP(only a root user in chroot), and I would like 
these users to get their home dirs from nfs. Swap perhaps also on nfs, or 
perhaps on a small local ssd. No routing pass-through the server, but strait to 
the gateway that provides the dhcp services.


What kind of difficulties would I encounter here...? Someone like to elaborate 
or continue...?



Why would I like it like this? In my opinion the fat client environment have 
many problems. One is the problem that there is no user, and another one is 
that the user is on the server. There are other problems like sound as well. 
LTSP is also very complex, too complex...IMHO.
I run my LTSP server environment as a KVM virtual machine(right now edubuntu) 
on Illumos/ZFS, and I already got a lot of services in there on Illumos/OmniOS, 
as nfs, dhcp, dns, ldap, etc. I don't need and want duplications in the LTSP 
environment as well. I just want LTSP to be able to provide a chroot 
environment served by tftp, and beeing able to build and update the images. 
Lean and clean virtual machine(heh-he, rhyme)...


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


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[Ltsp-discuss] Ang: Re: Deploying LTSP In The Cloud.

[Johan Kragsterman]

Hi!


Many have wanted to do just that, to centralize administration and services for 
LTSP at the "cloud". 

There are no obvious ways to do it in a simple way, but you can do it by 
yourself in some different ways.

I think you said you should have LTSP servers running on all remote sites? Ok, 
and then you can mirror the /opt to centralized LTSP servers, for getting the 
same chroot in all places.

You can have centralized identity and authorization systems, and if you need it 
slave servers for those in the local environment.

The biggest problem is probably the file services. You will probably need local 
nfs servers, that use wan optimization/cacheing of the centralized nfs servers, 
to get a good enough service.


All of this is a lot of work, and you don't really know how good or bad it will 
turn out.

What I would have done, though, would be to use Thinlinc from Cendio. Will not 
be free, but will solve all of this. I've tried many of these thin client 
solutions, including nomachine and sunray, and no one beats thinlinc.

Regards Johan


-Valtteri Suojanen  skrev: -
Till: 
Från: Valtteri Suojanen 
Datum: 2015-09-05 17:08
Ärende: Re: [Ltsp-discuss] Deploying LTSP In The Cloud.

Hi

Cloud is very much service for anything. There are public and private clouds 
and everything between. Are you planning to but the services on internet? 

I think you should check elsewhere like Nomachine first if you are to use 
remote site desktops from your clients

I understand LTSP is for deploying server environments in local networks where 
you can use different thin/fat clients. And server is just for local network. 
And you don't actually deploy LTSP, instead you use LTSP (package and plugins) 
to deploy these, very good  thin/fat client environments on local networks. 
There is no built-in security for running LTSP server in production for 
WAN/internet

Valtteri Suojanen
Lähettäjä: Mahmoud Ramadan
Lähetetty: 4.9.2015 23:40
Vastaanottaja: ltsp-discuss@lists.sourceforge.net
Aihe: [Ltsp-discuss] Deploying LTSP In The Cloud.

Hi dears,
I'm new to LTSP BUT still have basic experience with it including installation 
and configuring thin and fat clients,everything works fine BUT i need to know 
how to deploy it in the cloud to support thin and fat in remote sites.

I have a centralized model in my environment where all the services are 
deployed in the cloud to support remote sites using WAN access so the question 
now how i can deploy LTSP in the cloud and run thin and fat clients in the 
remote sites ?! Thanks in advance for any help !

Best Regards,

Mahmoud Ramadan Ali

Network and VOIP Specialist.

Mobil: (+2) 01276877112

Blog | Website | LinkedIn

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[Ltsp-discuss] Ang: winxp in virtual vdi inside Ubuntu ltsp server

[Johan Kragsterman]

Hi!-richard kweskin rkwesk_l...@hellug.gr skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: richard kweskin rkwesk_l...@hellug.grDatum: 2015-06-01 12:15Ärende: [Ltsp-discuss] winxp in virtual vdi inside Ubuntu ltsp serverI will be assisting in setting up ltsp using 32bit Ubuntu 12.04 in a school for kids aged 9 to 13 yrs old. The school has asked that windows be also available as they have win software they use.My thought was to include on the ltsp server a vdi with windows xp using virtualbox. The 16 clients will all be fat with 1 GB ram each. What advice can anyone offer so that the vdi is small enough but useable on the clients?As not all clients have the same hardware configuration should a live cd image e.g. Hirens be used to accommodate the various clients or is this not an issue?RichardFirst of all, different client hw is normally not a problem for fat clients, but of coarse you need to test. Especially if the graphic driver isn't in the kernel.The best window$ solution depends on the software they want to run. If it is possible to use a windows terminal server, that is for me the best solution.And why use VB if you can use KVM?Rgrds Johan--_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:  https://lists.sourceforge.net/lists/listinfo/ltsp-discussFor additional LTSP help,  try #ltsp channel on irc.freenode.net


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[Ltsp-discuss] Ang: Re: experienced thin client platforms?

[Johan Kragsterman]

Hej!It all depends if you're going to run thin or fat clients, and the performance needs you got.We run 64-bit fat clients, with VERY good performance, on Asus J1900I-C mITX that we put in some cheap chenbro chassi. That's an integrated quad core CPU, and with 8 GB memory. The whole lot, mo'bo', chassi and memory we got for around EUR 180, I guess.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Denis Croombs de...@croombs.org skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Denis Croombs de...@croombs.orgDatum: 2015-05-15 09:15Ärende: Re: [Ltsp-discuss] experienced thin client platforms?
  

  
  
We use the Zotac Zbox devices (approx
  100 euro) and old PC's and currently have 5 LTSP servers (each
  team have their own server) and 250+ people (1 server has 150
  people on it) others are much smaller (we will in 2/3 months time
  have 30+ LTSP servers supporting 800+ people)
  The Zbox is the dual Celeron CPU with 1 or 2gb Ram and PXE boots
  very nicely.
  
  Denis
  
  On 15/05/2015 02:25, Graham Innes wrote:


  
  If you can afford the extra space, for half the price of the NUC
  (with ULV processors), you can get Celeron desktop processors with
  much better performance and even comfortably run them as fat
  clients. That's what we did, and things are good. 
  
  When we built ours early last year, we used Ivy Bridge Asus uATX
  desktop boards (H61M-K) with socketed Intel Celeron G1620
  processors, 2 GB generic RAM (now upgraded to 4 GB) and low power
  generic PSUs with 12cm fans. Total cost at that time was around
  $130 each (without case, I guess $150 with a cheap case). They
  score 2650 on cpubenchmark.net and consume less than 20W (without
  monitor). 
  
  The Haswell Celerons (G1800 series) currently available are the
  same price we paid for our Ivy Bridges at the time. The base G1820
  scores a healthy 2800 on cpubenchmark. Broadwell Celerons should
  be out soon, promising lower power consumption and slightly better
  performance. 
  
  Meanwhile, a NUC with
  
  a Core i3-3217U scores just 2200 on cpubenchmark.net and costs
  $250 barebone, so $300 with 4GB RAM. On the upside I guess they
  run closer to 10W and consume a lot less space. 
  
  Obviously cpubenchmark.net is just one synthetic benchmark, but we
  have found it to be a good indicator of overall desktop
  performance for general office use. 
  
  We have had no compatibility issues with our setup, and aside
  from one DOA board, everything has been reliable and stable. 
  
  
  
  On Friday, 15 May, 2015 03:54 AM,
Kent Schumacher wrote:
  
  
I have had really good luck with the shuttle XS35 series, though I'm having some trouble getting the V4 version to do a pxe-boot.I've only spent 15 minutes on the problem, so I'm presuming I'll figure out the correct settings with a little more effort.On 05/14/2015 02:51 PM, ltsp-discuss@lists.sourceforge.netwrote:

  I've been out of the loop for a couple of years, and wondering whatthe current favourites are for thin client hardware. I used to deploythe Intel D525MW Atom board with a couple GB of RAM and PicoPSU andcase from mini-box.com.With Intel out of the board market, what are people recommending forcompatibility and power savings? Decent graphics performance would benice, but less of a priority for me than cost and idel powerconsumption.The Celeron NUC looks tempting:https://www-ssl.intel.com/content/www/us/en/nuc/nuc-board-dn2820fykh.htmlOf course mini-box has their own pre-config systems, but as I recallthere were problems with some of the Atom graphics chips and lack ofLinux drivers.http://www.mini-box.com/MiniPC-Value-SystemsThoughts or recommendations?db--One dashboard for servers and applications across Physical-Virtual-CloudWidest out-of-the-box monitoring support with 50+ applicationsPerformance metrics, stats and reports that give you Actionable InsightsDeep dive visibility with transaction tracing using APM Insight.http://ad.doubleclick.net/ddm/clk/290420510;117567292;y_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:   https://lists.sourceforge.net/lists/listinfo/ltsp-discussFor additional LTSP help,  try #ltsp channel on irc.freenode.net

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[Ltsp-discuss] Ang: Re: Fat clients can't use printer/scanner connected to server

[Johan Kragsterman]

Hej!


-John Hupp l...@prpcompany.com skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: John Hupp l...@prpcompany.com
Datum: 2015-05-02 20:40
Ärende: Re: [Ltsp-discuss] Fat clients can't use printer/scanner connected to   
server

 -John Hupp l...@prpcompany.com skrev: -
 Till: ltsp-discuss@lists.sourceforge.net
 Från: John Hupp l...@prpcompany.com
 Datum: 2015-04-30 23:52
 Ärende: [Ltsp-discuss] Fat clients can't use printer/scanner connected to 
 server

 Running LTSP-PNP with Lubuntu 14.04.2, I have thin clients running smoothly.

 But with a fat client, Simple Scan reports No scanners detected. And
 System Tools: Printers reports Printing service not available. Start
 the service on this computer or connect to another server.

 In lts.conf, I have:
 SCANNER=True
 LDM_PRINTER_DEFAULT=EPSON-Stylus-C120

 On the server, System Tools: Printers reports that the Epson is Shared.

 The logged in user has permission to use scanners.

 The cupsd process is running on the client.

 Do fat clients need avahi-daemon to detect these peripherals?  Or does
 anyone otherwise recognize the issue?




 On 5/1/2015 2:23 AM, Johan Kragsterman wrote:

 I run edubuntu 14.4 with 4 different chroot's. I don't know about scanners, 
 but printers I configura with editing cups-browsed.conf and adding your own 
 printers.conf. I never touch lts.conf.


 Rgrds Johan


Continuing for the moment to work just on the printing question, the 
Printing service not available message went away after I ran (on the 
server) system-config-printer and under Server: Settings checked 
Publish shared printers connected to this system and then updated the 
image.

But there are still no printers showing up on the fat client when I run 
system-config-printer there, and I see that in the image printers.conf 
has no content except 3 lines of comments.  The content is apparently 
stripped during an image update.  So even if I were to set up a network 
printer on the server (for the printer connected to the server), that 
configuration would be stripped during an image update and so not 
propagated to the fat client.

@ Johan: If the above is true, how do you then add your own printers.conf?





Here's how it looks like in my fat clients filesystem:

admin@ws0:/etc/cups$ ls
cups-browsed.conf  ppd  raw.types   subscriptions.conf.O
cupsd.conf printers.confsnmp.conf
cups-files.confprinters.conf.O  ssl
interfaces raw.convssubscriptions.conf
admin@ws0:/etc/cups$ 


As you can see, I got all the normal cups files there, I don't know if there is 
a different with the ltsp-pnp. I didn't build my chroot's with any special 
options.

 As you also can see, I got both printers.conf and printers.conf.0. The latter 
is the one that cups is building automatically, and it is named like that, 
because the printers.conf already exists.

Here's my cups-browsed.conf:

admin@ws0:/etc/cups$ cat cups-browsed.conf
# Which protocols will we use to discover printers on the network?
# Can use DNSSD and/or CUPS, or 'none' for neither.
BrowseRemoteProtocols dnssd cups

# Which protocols will we use to broadcast shared local printers to the network?
# Can use DNSSD and/or CUPS, or 'none' for neither.
# Only CUPS is actually supported, as DNSSD is done by CUPS itself (we ignore
# DNSSD in this directive).
# BrowseLocalProtocols none

# Settings of this directive apply to both BrowseRemoteProtocols and
# BrowseLocalProtocols.
# Can use DNSSD and/or CUPS, or 'none' for neither.
BrowseProtocols dnssd cups

# Only browse remote printers from selected servers
# BrowseAllow cups.example.com
BrowseAllow 192.168.10.250
BrowseAllow 192.168.10.0/24
BrowseAllow 192.168.10.0/255.255.255.0

# Use BrowsePoll to poll a particular CUPS server
BrowsePoll 192.168.10.250:631
BrowsePoll 192.168.10.250
# BrowsePoll cups.example.com:631/version=1.1

# Use DomainSocket to access the local CUPS daemon via another than the
# default domain socket
# DomainSocket /var/run/cups/cups.sock

# Set CreateIPPPrinterQueues to Yes to let cups-browsed discover IPP
# network printers (native printers, not CUPS queues) with known page
# description languages (PWG Raster, PDF, PostScript, PCL XL, PCL
# 5c/e) in the local network and auto-create PPD-less print queues for
# them (using a System V interface script to control the filter
# chain). Clients have to IPP-poll the capabilities of the printer and
# send option settings as standard IPP attributes. We do not poll the
# capabilities by ourselves to not wake up the printer from
# power-saving mode when creating the queues. Jobs have to be sent in
# PDF format. Other formats are not accepted. This functionality is
# primarily for mobile devices running CUPS to not need a printer
# setup tool nor a collection of printer drivers and PPDs.

CreateIPPPrinterQueues Yes

# The AutoShutdown directive specifies whether cups-browsed should
# automatically terminate when it has no local raw queues set up

[Ltsp-discuss] Ang: Fat clients can't use printer/scanner connected to server

[Johan Kragsterman]

Hi!


-John Hupp l...@prpcompany.com skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: John Hupp l...@prpcompany.com
Datum: 2015-04-30 23:52
Ärende: [Ltsp-discuss] Fat clients can't use printer/scanner connected to   
server

Running LTSP-PNP with Lubuntu 14.04.2, I have thin clients running smoothly.

But with a fat client, Simple Scan reports No scanners detected. And 
System Tools: Printers reports Printing service not available. Start 
the service on this computer or connect to another server.#8221;

In lts.conf, I have:
SCANNER=True
LDM_PRINTER_DEFAULT=EPSON-Stylus-C120

On the server, System Tools: Printers reports that the Epson is Shared.

The logged in user has permission to use scanners.

The cupsd process is running on the client.

Do fat clients need avahi-daemon to detect these peripherals?  Or does 
anyone otherwise recognize the issue?






I run edubuntu 14.4 with 4 different chroot's. I don't know about scanners, but 
printers I configura with editing cups-browsed.conf and adding your own 
printers.conf. I never touch lts.conf.


Rgrds Johan



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Performance metrics, stats and reports that give you Actionable Insights
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For additional LTSP help,   try #ltsp channel on irc.freenode.net




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Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
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[Ltsp-discuss] Ang: No Printers available in LibreOffice

[Johan Kragsterman]

Hi!You need to edit the /etc/cups/cups-browsed.conf file in the chroot of your fat client. After that you can search for your printer in the fat client printer box. It will not be persistent, though, during reboot of the fat client, you will need to search for it again. If you want it persistent during reboot, you need to add the file /etc/cups/printers.conf in chroot. Of coarse, after the chroot changes, you need to rebuild the image.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Michael Peters misa...@hotmail.com skrev: -Till: "ltsp-discuss@lists.sourceforge.net" ltsp-discuss@lists.sourceforge.netFrån: Michael Peters misa...@hotmail.comDatum: 2015-02-21 23:29Ärende: [Ltsp-discuss] No Printers available in LibreOffice


I amready to deployLTSP with Lubuntu 14.04. The home directories, DHCP, CUPS,LDAP for authentication, are all on external servers.All works well except printing in LibreOffice on the fat client. I am having the same issue with LTSP-PNP as well.The printers show in the printer dialog boxes for all programs on the thin clients (including LibreOffice), and all other programs on the fat clients and in LTSP-PNP, but not in LibreOffice on the fat clients nor on ltsp-pnp. Any ideas how to solve as the LibreOffice application Suite is the main program used at my school.ThanksMichael   

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[Ltsp-discuss] Ang: Re: Ang: Re: display manager in fat clients..

[Johan Kragsterman]

-richard kweskin rkwesk_l...@hellug.gr skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: richard kweskin rkwesk_l...@hellug.gr
Datum: 2014-11-27 11:31
Ärende: Re: [Ltsp-discuss] Ang: Re: display manager in fat clients..

On 2014-11-26 13:50, Johan Kragsterman wrote:
 Hi, Vagrant!

 Thanks for the input!

 More questions further down...


 -Vagrant Cascadian vagr...@debian.org skrev: -
 Till: ltsp-discuss@lists.sourceforge.net
 Från: Vagrant Cascadian vagr...@debian.org
 Datum: 2014-11-26 11:48
 Ärende: Re: [Ltsp-discuss] display manager in fat clients..

 On 2014-11-26, Johan Kragsterman wrote:
 How is the display manager work in fat clients...?

 It seems there is no local display manager...?

 Both LTSP fat and thin clients use LDM, which does LTSP specific
 configuration, and sets up the sshfs homedir, user account, triggers
 ltspfs mounts, etc.


 When I run sudo stop lightdm in terminal,

 Lightdm isn't typically used in LTSP5.


 it only says unknown job...but I can of coarse stop it with
 ctrl-alt-F1, but after that I can't start it again...

 Not sure what you mean by stopping it, it's run from an LTSP screen
 script, which should respawn if you kill LDM manually.

 LDM should be running on tty7 by default, reachable with ctrl-alt-f7.




 Yeah, that is fine, but I can't stop the LDM in a terminal. It just
 says unknown job. I want to be able to stop and then restart it
 again. This is due to the situation that my screen is large, so I 
 want
 to turn it off when I leave my work space. It has an HDMI interface,
 which I believe is the reason for that when I return, there is no
 connection anylonger. Perhaps the driver detaches or something...?

  Anyway, what I do then is to ctrl-alt-F1, and then the connection
 picks up, and I reach the console. But if I do ctrl-alt-F7 I'm back
 without a signal. I believe I would get a signal if I could restart
 the display manager from the console.

What about

  service ldm stop
  service ldm start



Same thing there, it doesn't recognize ldm as a job, and it doesn't recognize 
it as a service. Which means, as far as I can imagine, that it doesn't run on 
the fat client...? Must be running on the server, then...

 Vagrant said it runs from an LTSP screen script, so I guess I should be able 
to run that script to get it going. Someone familiar with that script, like 
where it is and the name of it...?


Johan



Richard

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[Ltsp-discuss] display manager in fat clients..

[Johan Kragsterman]

Hi!How is the display manager work in fat clients...?It seems there is no local display manager...? When I run sudo stop lightdm in terminal, it only says unknown job...but I can of coarse stop it with ctrl-alt-F1, but after that I can't start it again...Anyone can shed some light here...?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


--
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[Ltsp-discuss] Ang: Re: display manager in fat clients..

[Johan Kragsterman]

Hi, Vagrant!

Thanks for the input!

More questions further down...


-Vagrant Cascadian vagr...@debian.org skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Vagrant Cascadian vagr...@debian.org
Datum: 2014-11-26 11:48
Ärende: Re: [Ltsp-discuss] display manager in fat clients..

On 2014-11-26, Johan Kragsterman wrote:
 How is the display manager work in fat clients...?

 It seems there is no local display manager...?

Both LTSP fat and thin clients use LDM, which does LTSP specific
configuration, and sets up the sshfs homedir, user account, triggers
ltspfs mounts, etc.


 When I run sudo stop lightdm in terminal,

Lightdm isn't typically used in LTSP5.


 it only says unknown job...but I can of coarse stop it with
 ctrl-alt-F1, but after that I can't start it again...

Not sure what you mean by stopping it, it's run from an LTSP screen
script, which should respawn if you kill LDM manually.

LDM should be running on tty7 by default, reachable with ctrl-alt-f7.




Yeah, that is fine, but I can't stop the LDM in a terminal. It just says 
unknown job. I want to be able to stop and then restart it again. This is due 
to the situation that my screen is large, so I want to turn it off when I leave 
my work space. It has an HDMI interface, which I believe is the reason for that 
when I return, there is no connection anylonger. Perhaps the driver detaches or 
something...?

 Anyway, what I do then is to ctrl-alt-F1, and then the connection picks up, 
and I reach the console. But if I do ctrl-alt-F7 I'm back without a signal. I 
believe I would get a signal if I could restart the display manager from the 
console.


live well,
  vagrant
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[bilagan signature.asc borttagen av Johan Kragsterman/Capvert]


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[Ltsp-discuss] bluetooth device communication and fat clients

[Johan Kragsterman]

HiWant to report some success and some difficulties:I'm running an edubuntu VM(on KVM on Illumos) as an LTSP server for both thin and fat clients. It is a real success project, that I've been working on for a long time, and finally got up and running.The thin clients never been any problems, of coarse, but the fat clients are suffering from the permission issues they've always done.Difficulties use to be sound and printer access, and these have I solved in a good way.It seems that sound support is difficult to get if you run any sound device that is not the internal audio connected with the usual audio jacks, like sound through the HDMI interface, or a usb sound device. Inever got that to work, but I don't need it, I can use the internal audio with the audio jack.Priner access you need to get into the configuration files in the chroot, to add your network printers. When you done so, it's not a problem.Though now I got this problem with bluetooth, and I don't know which configuration files to go into and edit. I use a normal BT dongle in the fat client and it's getting discovered, and I can see other BT devices and I can pair it, bot I can't recieve any files from outside devices. That must of coarse be a permission problem, but I can't find any relevant configuration file to edit.Are there anyone on this list that have any knowledge of this?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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[Ltsp-discuss] Ang: bluetooth device communication and fat clients

[Johan Kragsterman]

Hej!I want to report back, that I succeeded with accessing the fat client via bluetooth now. I didn't need to get into the config files. I could do it, but not in the gnome desktop environment, but in the xfce. I don't know what it was in the gnome environment that prevented me from recieving files. But with blueman in xfce it went like a charm.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Johan Kragsterman johan.kragster...@capvert.se skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Johan Kragsterman johan.kragster...@capvert.seDatum: 2014-11-22 11:58Ärende: [Ltsp-discuss] bluetooth device communication and fat clientsHiWant to report some success and some difficulties:I'm running an edubuntu VM(on KVM on Illumos) as an LTSP server for both thin and fat clients. It is a real success project, that I've been working on for a long time, and finally got up and running.The thin clients never been any problems, of coarse, but the fat clients are suffering from the permission issues they've always done.Difficulties use to be sound and printer access, and these have I solved in a good way.It seems that sound support is difficult to get if you run any sound device that is not the internal audio connected with the usual audio jacks, like sound through the HDMI interface, or a usb sound device. Inever got that to work, but I don't need it, I can use the internal audio with the audio jack.Priner access you need to get into the configuration files in the chroot, to add your network printers. When you done so, it's not a problem.Though now I got this problem with bluetooth, and I don't know which configuration files to go into and edit. I use a normal BT dongle in the fat client and it's getting discovered, and I can see other BT devices and I can pair it, bot I can't recieve any files from outside devices. That must of coarse be a permission problem, but I can't find any relevant configuration file to edit.Are there anyone on this list that have any knowledge of this?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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[Ltsp-discuss] Ang: Re: slow performance, where to start?

[Johan Kragsterman]

-James McQuillan j...@mcquil.com skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: James McQuillan j...@mcquil.com
Datum: 2014-11-07 22:39
Ärende: Re: [Ltsp-discuss] slow performance, where to start?

This sounds like a video driver issue on the client.

It's probably using the default Vesa driver.

Unfortunately, I've been away from ltsp too long to remember what you need to 
change it to, and how to change it.

Jim McQuillan
j...@ltsp.org






Hi!


If that is the problem, there is a guide here:

https://help.ubuntu.com/community/UbuntuLTSP/AtomIon

Pls report back and tell us how you're doing!

I suppose you're using FAT Clients?


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert









On Fri, Nov 7, 2014 at 4:06 PM, Mike Cammilleri mi...@stat.wisc.edu wrote:
Oh and i should mention I've been running both Ubuntu 12.04 and 14.04
LTS. And scrolling is one of the biggest problems. Scrolling a PDF in
either firefox or Acroread is bad, and just scrolling web pages. Waiting
for big chunks at a time.

On 11/07/2014 02:23 PM, Mike Cammilleri wrote:
 So I've been experimenting with various hardware for our LTSP servers.
 Everything from VM's to this current Intel(R) Xeon(R) CPU E5-2630 0 @
 2.30GHz (12 core) with ~48GB of RAM. (Dell Poweredge).

 Thin client is a Zotac ZboxSD13-ID13 with 4GB of RAM and an Intel Atom
 D525 (1.8 GHz, dual-core).

 I have a 1gigabit connection all the way from the thin client to the
 LTSP server.

 Why are things always laggy? Multiple tabs in Firefox - will take 5
 seconds after each click for anything to happen. Clicking between
 windows has same almost 5 second lag or more. Of course watching a
 Youtube video slows everything down.

 I installed xosview to monitor the server and I do notice the network
 graph pegging at the top of the chart, but the actually numbers are just
 fluctuating from 6K to 5Mbit so I'm not sure network is the problem. But
 there is no way that this LTSP server shouldn't be able to handle a
 single thin-client efficiently. However I've seen this behavior on our
 other LTSP server configurations as well. I can't seem to track down the
 slowness - RAM looks good and CPU time is very low.

 Could it be a lag in the actual transmission of X (video) to my monitor?
 When I type this email the cursor is moving fine. If I type in Firefox
 its laggy again. I'm stumped.

 What should one look for when optimizing LTSP for performance?
 Everything I read says I'm doing it fine as far as meeting the LTSP
 server system requirements but I can't have users using such a lagging
 interface.

 Thanks for any advice!
 mike

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[Ltsp-discuss] Minimal server os on clients

[Johan Kragsterman]

-a. thissid...@riseup.net skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: a. thissid...@riseup.net
Datum: 2014-07-31 21:22
Ärende: [Ltsp-discuss] Minimal server os on clients

I am trying out ltsp for our setup of multiple servers. I currently
cannot find a way to easily provision a minimal ubuntu image, where
basically nothing else is installed but the necessary os and a openssh
server.

However I run ltsp-build-client it always installs a complete ubuntu
desktop including x11, ldm, cups, etc.

How can I build a minimal server os for the clients?


Hi!

I wanted to do the same, and got an advice from Vagrant to do:

On Debian, ltsp-build-client --early-packages ltsp-client-core ... works.
Might work on Ubuntu...

But it didn't work on my edubuntu 14.04

Rgrds Johan


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[Ltsp-discuss] problems building chroot

[Johan Kragsterman]

Hej!

Got problems to build a new ltsp client here.

What I want to achieve is a fat server client without desktop environment, but 
when I looked at the packages, it looked like there were desktop packages as 
well. I don't know if this has anything with the build problems to do, though.

I ran the following:

sudo ltsp-build-client --early-packages ltsp-client-core --arch i386 
--fat-client --chroot dvb0


And it start out well, and goes on for quite a while, but suddenly it stops 
with this:

Processing triggers for tex-common (4.04) ...
Running mktexlsr. This may take some time... done.
texlive-base is not ready, delaying updmap-sys call
Processing triggers for libreoffice-common (1:4.2.4-0ubuntu2) ...
Fel uppstod vid hantering: (Swedish for: Error occurred while processing)
 overlay-scrollbar-gtk2:i386
E: Sub-process /usr/bin/dpkg returned an error code (1)
umount: /opt/ltsp/dvb0/proc: device is busy.



Someone can tell me something about this?

It seems that the overlay-scrollbar-gtk2:i386 is the problem? Is it trying to 
umount /opt/ltsp/dvb0/proc because the build process couldn't go on?


Perhaps it is a better idea to install a normal client and remove the desktop 
and other stuff I don't want afterwards?



Best regards from/Med vänliga hälsningar från

Johan Kragsterman

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[Ltsp-discuss] Ang: problems building chroot

[Johan Kragsterman]

Hej!


Okay, I can answer a part of my questions myself:

The build commands I used, to get a server chroot without a desktop gui, must 
have been containing something that didn't add up, since it worked fine when I 
builded a normal desktop client.

Though I don't know why it didn't work in the first place...


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


-Johan Kragsterman johan.kragster...@capvert.se skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Johan Kragsterman johan.kragster...@capvert.se
Datum: 2014-07-15 20:39
Ärende: [Ltsp-discuss] problems building chroot

Hej!

Got problems to build a new ltsp client here.

What I want to achieve is a fat server client without desktop environment, but 
when I looked at the packages, it looked like there were desktop packages as 
well. I don't know if this has anything with the build problems to do, though.

I ran the following:

sudo ltsp-build-client --early-packages ltsp-client-core --arch i386 
--fat-client --chroot dvb0


And it start out well, and goes on for quite a while, but suddenly it stops 
with this:

Processing triggers for tex-common (4.04) ...
Running mktexlsr. This may take some time... done.
texlive-base is not ready, delaying updmap-sys call
Processing triggers for libreoffice-common (1:4.2.4-0ubuntu2) ...
Fel uppstod vid hantering: (Swedish for: Error occurred while processing)
 overlay-scrollbar-gtk2:i386
E: Sub-process /usr/bin/dpkg returned an error code (1)
umount: /opt/ltsp/dvb0/proc: device is busy.



Someone can tell me something about this?

It seems that the overlay-scrollbar-gtk2:i386 is the problem? Is it trying to 
umount /opt/ltsp/dvb0/proc because the build process couldn't go on?


Perhaps it is a better idea to install a normal client and remove the desktop 
and other stuff I don't want afterwards?



Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


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Re: [Ltsp-discuss] Ubuntu 14.04 LTSP now working?

[Johan Kragsterman]

-Jakob Unterwurzacher jakob...@gmail.com skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Jakob Unterwurzacher jakob...@gmail.com
Datum: 2014-06-11 23:30
Ärende: Re: [Ltsp-discuss] Ubuntu 14.04 LTSP now working?

On 10.06.2014 13:39, Fabrizio Carrai wrote:
 Hello Martin,
 I tryed LTSP with 14.04 (VirtualBox, to be precise) and it seems working
 fine. Since I'm going to present it, I wonder if there are hidden
 problems I didn't face yet:
 Which kernel did you use ?


So I guess we are talking about this problem

https://www.mail-archive.com/ltsp-discuss@lists.sourceforge.net/msg41773.html

this is the fix

net: avoid dependency of net_get_random_once on nop patching
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3d4405226d27b3a215e4d03cfa51f536244e5de7
.

Judging from

http://kernel.ubuntu.com/git?p=ubuntu%2Fubuntu-trusty.gita=searchh=HEADst=commits=avoid+dependency+of+net_get_random_once+on+nop+patching
:

Nope, not fixed yet.

Also, I experienced that issue on real thin clients, but could not
reproduce it under VirtualBox. I have no idea why.

Best regards,
Jakob



Hi!

Been following this thread with interest, since I run Edubuntu 14.04. I choosed 
Edubuntu since it has targeted LTSP as one if it's main applications.

Not experienced any problems. I run it as a KVM virtual machine on OmniOS.

I don't run it in production yet, so perhaps I would see more problems if I 
used it more than I do.

Rgrds Johan



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[Ltsp-discuss] chroot without GUI?

[Johan Kragsterman]

Hi!


I'd like to install a fat client chroot without a desktop gui, for running a 
DVB server on a tiny client machine I got.
My LTSP server is a edubuntu 64-bit. How would I build the client to NOT get 
the desktop gui? Or du I need to build it WITH gui, and then remove it?


Perhaps I can use --exclude edubuntu-desktop? Would all desktop components 
disappear with this?


Something like this: ltsp-build-client --arch i386 --chroot fati386dvb 
--fat-client --exclude edubuntu-desktop???



Best regards from/Med vänliga hälsningar från

Johan Kragsterman

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[Ltsp-discuss] Ang: chroot without GUI?

[Johan Kragsterman]

Hmm, been thinkingread furhter down..



-Johan Kragsterman johan.kragster...@capvert.se skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Johan Kragsterman johan.kragster...@capvert.se
Datum: 2014-05-14 11:34
Ärende: [Ltsp-discuss] chroot without GUI?

Hi!


I'd like to install a fat client chroot without a desktop gui, for running a 
DVB server on a tiny client machine I got.
My LTSP server is a edubuntu 64-bit. How would I build the client to NOT get 
the desktop gui? Or du I need to build it WITH gui, and then remove it?


Perhaps I can use --exclude edubuntu-desktop? Would all desktop components 
disappear with this?


Something like this: ltsp-build-client --arch i386 --chroot fati386dvb 
--fat-client --exclude edubuntu-desktop???



Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert






I would like to get a ubuntu server chroot, with very slim/lean setup, actually 
only sshd on it, that's enough. Not a edubuntu without desktop gui


Anyone got some ideas how to build this...? Can I use --dist ubuntu-server?

Regards Johan



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Re: [Ltsp-discuss] chroot without GUI?

[Johan Kragsterman]

-Vagrant Cascadian vagr...@debian.org skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Vagrant Cascadian vagr...@debian.org
Datum: 2014-05-14 17:12
Ärende: Re: [Ltsp-discuss] chroot without GUI?

On Wed, May 14, 2014 at 11:33:17AM +0200, Johan Kragsterman wrote:
 I'd like to install a fat client chroot without a desktop gui, for running a 
 DVB server on a tiny client machine I got.
 My LTSP server is a edubuntu 64-bit. How would I build the client to NOT get 
 the desktop gui? Or du I need to build it WITH gui, and then remove it?

On Debian, ltsp-build-client --early-packages ltsp-client-core ... works.
Might work on Ubuntu...

live well,
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Thanks, I'll try that, and report back.

Rgrds Johan


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Re: [Ltsp-discuss] Ang: no sound on fat clients

[Johan Kragsterman]

Hej, Rüdiger!Thanks for your input!No one else on this list seem to bother...but strangly there are people that got sound on 12.04, but perhaps it is broken on 13.10?Anyway, I upgraded to 14.04 now, and I will run som more tests, both with fat clients, and with thin clients with local apps.Do you run just thin clients(with local apps), or do you have the same experience with fat clients?Which version are you running?I try to confirm your tests/theories, and get back to you, but I don't have much time right now...Strange that I haven't heard anything about this before, it SHOULD be a big issue in the edubuntu community, as far as I could imagine...?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Rüdiger Kupper k...@kg-fds.de skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Rüdiger Kupper k...@kg-fds.deDatum: 2014-04-22 10:03Ärende: Re: [Ltsp-discuss] Ang:  no sound on fat clientsHello Johan,I believe I see the same problem on our thin clients, and I have atheory what makes the sound break. I believe that the problem is relatedto the sample rate of the sound you try to play.Regarding your experiments with a DVB stream and youtube, I'd expectthat the DVB stream comes with 48 kHz audio sampling rate, while theyoutube video had 44.1 kHz?I can completely reproduce your results with two sample audio files, onewith 44.1 kHz and one with 48 kHz sample rate. Here is what I see:Test1:- I boot up the thin client and open the 44.1 kHz file, it works.Test 2:- I boot up the thin client and open the 48 kHz file. From what theplayer shows, it appears to play, but I have no sound.- I close that file and open the 44.1 kHz file (the one that worked finein test 1), and have no sound either.- Sound will not come back until I reboot the client.Test 3:- I boot up the thin client and open the 44.1 kHz file. I have sound.- I keep this file playing (endless loop). In parallel I open the 48 kHzfile. I have sound, both files play together.In short, my theory is that 48 kHz playback breaks pulseaudio on LTSPclients.So why does test 3 work? When you first play a 44.1 kHz audio stream andin parallel open a 48 kHz stream, I believe pulseaudio will sample downthe second stream to 44.1 kHz to mix it into the already playing stream.That's why audio works in test 3, and that also constitutes a workaround.Workaround: Tell your users to open up a 44.1 kHz youtube video, startto play and pause it, keep the browser window open. After that soundwill work and stay up, no matter what file they play.This is really just a workaround, but our users were very thankfulhaving it (we use LTSP in classrooms, and the difference of having ornot having sound can well break or make a teacher's complete lesson...)In any case, it would be much better to really fix the problem.So, Johan, I'd ask you to confirm my three test cases above. I cansupply two sample mp3 files if you need, please give me a note. It willbe no difference what software you use for playback, as long as it usespulseaudio (VLC is fine).If you confirm the test, we need some pulseaudio or LTSP developer to(a) find the reason, and/or (b) tell us if pulseaudio can be set up togenerally downsample all audio to 44.1 kHz on our clients.Looking forward to seeing your results,best regards,RüdigerOn 13.04.2014 07:37, Johan Kragsterman wrote: The results are strange  If I start with VLC, directly after the newly booted client, and ltsp-localapps pulseaudio -nC:  ltsp-localapps vlc:  VLC recieving dvb streams from my TV-server(mumudvb) doesn't play any sound, though it displays that sound is in the stream, and it lets me choose the local sound device to use(Just a note: This works perfect on a normal workstation).  If I start with google-chrome, and youtube, directly after the newly booted client, and ltsp-localapps pulseaudio -nC:  It seem to work fine with the sound, though the video quality is not fine.  If I start VLC AFTER I started google-chrome/youtube where the sound is already working, sound is actually working on vlc as well, though NOT in all channels...!?!!? So, I don't really know what I'm doing here, just doing experiments, and reports back to list.  But any hints here would be appreciated, and a strategy for solving this would be fine!-- Dr. Rüdiger Kupper k...@kg-fds.deKepler-Gymnasium Freudenstadt--Start Your Social Network Today - Download eXo PlatformBuild your Enterprise Intranet with eXo Platform SoftwareJava Based Open Source Intranet - Social, Extensible, Cloud ReadyGet Started Now And Turn Your Intranet Into A Collaboration Platformhttp://p.sf.net/sfu/ExoPlatform_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:  https://lists.sourceforge.net/lists/listinfo/ltsp-discussFor additional LTSP help,  try #ltsp channel on irc.freenode.net[bilagan "signature.asc" borttage

Re: [Ltsp-discuss] Ang: no sound on fat clients

[Johan Kragsterman]

-Vagrant Cascadian vagr...@debian.org skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Vagrant Cascadian vagr...@debian.org
Datum: 2014-04-10 22:09
Ärende: Re: [Ltsp-discuss] Ang: no sound on fat clients

On Thu, Apr 10, 2014 at 02:55:47PM +0200, Johan Kragsterman wrote:
 I give myself, and you other guys a hint, since I found this on pulseaudio in
 system mode:
 
 http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/
 WhatIsWrongWithSystemWide/

If you read that page, you'll see:

  System mode is around for usage on thin client or embedded setups, wher no
   real local user exists, where access is exclusively via the network, and
   where state data is flushed on each session termination.

So this actually is appropriate. Not sure we flush state data on each session
termination though... and even though we're using pulseaudio in one of the
use-cases appropriate for system mode, there's no way to turn off the warning.

We could potentially rewrite some things and actually start per-user pulseaudio
daemons since we tend to actually have a local user (due to localapps or
fatclients), but LTSP5 is essentially in maintenance mode, and would rather
move major feature development towards LTSP6...



So, question is, what I got to do? Since I understand what I read, but not 
really where to implement it...system mode was already running locally on the 
Fat clients... but not on the server? Or...?

So WHERE am I supposed to add the users and groups in the manner that is 
described on the pulseaudio site? On the client or the server? And is it 
different from when I use Fat clients or thin clients with local apps?

 I've reconsidered running Fat clients, actually, since I'd like to run a mix 
of applications, some on the server, and some on the clients, and that looks 
easiest to achieve running thin clients with local apps.



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Re: [Ltsp-discuss] Ang: no sound on fat clients

[Johan Kragsterman]

-Vagrant Cascadian vagr...@debian.org skrev: -
Till: ltsp-discuss@lists.sourceforge.net
Från: Vagrant Cascadian vagr...@debian.org
Datum: 2014-04-10 22:09
Ärende: Re: [Ltsp-discuss] Ang: no sound on fat clients

On Thu, Apr 10, 2014 at 02:55:47PM +0200, Johan Kragsterman wrote:
 I give myself, and you other guys a hint, since I found this on pulseaudio in
 system mode:
 
 http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/
 WhatIsWrongWithSystemWide/

If you read that page, you'll see:

  System mode is around for usage on thin client or embedded setups, wher no
   real local user exists, where access is exclusively via the network, and
   where state data is flushed on each session termination.

So this actually is appropriate. Not sure we flush state data on each session
termination though... and even though we're using pulseaudio in one of the
use-cases appropriate for system mode, there's no way to turn off the warning.

We could potentially rewrite some things and actually start per-user pulseaudio
daemons since we tend to actually have a local user (due to localapps or
fatclients), but LTSP5 is essentially in maintenance mode, and would rather
move major feature development towards LTSP6...


Some experiencies after testing:

I 've been trying out sound on local apps on thin clients, and passed on some 
pulseaudio arguments, like:

ltsp-localapps pulseaudio -nC,

as well as 

ltsp-localapps pulseaudio -nF pulseaudio.pa

as well as some others.

The results are strange

If I start with VLC, directly after the newly booted client, and ltsp-localapps 
pulseaudio -nC:

ltsp-localapps vlc:

VLC recieving dvb streams from my TV-server(mumudvb) doesn't play any sound, 
though it displays that sound is in the stream, and it lets me choose the local 
sound device to use(Just a note: This works perfect on a normal workstation).

If I start with google-chrome, and youtube, directly after the newly booted 
client, and ltsp-localapps pulseaudio -nC:

It seem to work fine with the sound, though the video quality is not fine.

If I start VLC AFTER I started google-chrome/youtube where the sound is already 
working, sound is actually working on vlc as well, though NOT in all 
channels...!?!!?

When I switched channel on vlc and sound stops to work, it also stops to work 
on google-chrome/youtube...as well as the video on youtube is starting to hang, 
and it seems to hang after 7 seconds, all the time.

After that, I can not kill local pulseaudio and get it to work again.

So, I don't really know what I'm doing here, just doing experiments, and 
reports back to list.

But any hints here would be appreciated, and a strategy for solving this would 
be fine!

I am also reading this on the pulseaudion site, about systemwide:

There is only a single namespace for cached sound samples, i.e. there can be 
only a single Gnome event sound profile active at the same time

Anyone care to explain the consequencies of that?


Rgrds Johan


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Re: [Ltsp-discuss] Ang: no sound on fat clients

[Johan Kragsterman]

Hej!Thanks for your answer!Yeah, of coarse I read that page, and I have seen what you point out there.Though I didn't believe this was valid for fat clients...And what does it mean? For the ability to get sound on my fat clients? Do I need to implement the steps described in:"Running PulseAudio as System-Wide Daemon"Like adding pulse as a user and group, etc?Do you really mean that sound is not on by default, when you install fat clients?Or have I misinterpreted you here...?If I have misinterpret you(which I hope), what have I done wrong to get my sound not to work?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Vagrant Cascadian vagr...@debian.org skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Vagrant Cascadian vagr...@debian.orgDatum: 2014-04-10 22:09Ärende: Re: [Ltsp-discuss] Ang:  no sound on fat clientsOn Thu, Apr 10, 2014 at 02:55:47PM +0200, Johan Kragsterman wrote: I give myself, and you other guys a hint, since I found this on pulseaudio in system mode:  http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/ WhatIsWrongWithSystemWide/If you read that page, you'll see:"System mode is around for usage on thin client or embedded setups, wher no real local user exists, where access is exclusively via the network, and where state data is flushed on each session termination."So this actually is appropriate. Not sure we flush state data on each sessiontermination though... and even though we're using pulseaudio in one of theuse-cases appropriate for system mode, there's no way to turn off the warning.We could potentially rewrite some things and actually start per-user pulseaudiodaemons since we tend to actually have a local user (due to localapps orfatclients), but LTSP5 is essentially in maintenance mode, and would rathermove major feature development towards LTSP6...live well,vagrant--Put Bad Developers to ShameDominate Development with Jenkins Continuous IntegrationContinuously Automate Build, Test  Deployment Start a new project now. Try Jenkins in the cloud.http://p.sf.net/sfu/13600_Cloudbees_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:  https://lists.sourceforge.net/lists/listinfo/ltsp-discussFor additional LTSP help,  try #ltsp channel on irc.freenode.net


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[Ltsp-discuss] no sound on fat clients

[Johan Kragsterman]

Hej!Having a success with installing a system where fat clients recieves streaming TV from mumudvb to local VLC player, I now got stupidly stuck on sound!!!No local sound on the fat clients...System:Edubuntu 13.10 as a KVM VM on omnios, with a lot of juice: 16 GB RAM, 8 CPU, fast diskaccess, fast network. AMD64 fat chrootThe client hardware I'm using atm, is a Dell Optiplex Gx620, only 2 GB ram so far. When I use it a normal computer, and boot it from disk with same OS, I can stream dvb from the same mumudvb server with sound, no problems, as well as youtube, etc...But no sound on the fat clients. Not from vlc nor from youtube, etc. Sound devices are there, both when I do lspci and if I put in a usb sound device and do a lsusb, and if I open alsamixer. Been googling about this, and seen various fixes, like:SSH_FOLLOW_SYMLINKS=false in your lts.conforinstall pulseaudio-module-zeroconfwith some configurations.as well as others.Though no success so far, so got to ask you guys for help here...Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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[Ltsp-discuss] Ang: no sound on fat clients

[Johan Kragsterman]

Hej!I give myself, and you other guys a hint, since I found this on pulseaudio in system mode:http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/WhatIsWrongWithSystemWide/I found it when I ran:sudo pulseaudio --system[sudo] password for admin:W: [pulseaudio] main.c: Running in system mode, but --disallow-exit not set!W: [pulseaudio] main.c: Running in system mode, but --disallow-module-loading not set!N: [pulseaudio] main.c: Running in system mode, forcibly disabling SHM mode!N: [pulseaudio] main.c: Running in system mode, forcibly disabling exit idle time!W: [pulseaudio] main.c: OK, so you are running PA in system mode. Please note that you most likely shouldn't be doing that.W: [pulseaudio] main.c: If you do it nonetheless then it's your own fault if things don't work as expected.W: [pulseaudio] main.c: Please read http://pulseaudio.org/wiki/WhatIsWrongWithSystemMode for an explanation why system mode is usually a bad idea.W: [pulseaudio] authkey.c: Failed to open cookie file '/var/run/pulse/.config/pulse/cookie': No such file or directoryW: [pulseaudio] authkey.c: Failed to load authorization key '/var/run/pulse/.config/pulse/cookie': No such file or directoryW: [pulseaudio] authkey.c: Failed to open cookie file '/var/run/pulse/.pulse-cookie': No such file or directoryW: [pulseaudio] authkey.c: Failed to load authorization key '/var/run/pulse/.pulse-cookie': No such file or directoryand when I run it without sudo:pulseaudio --systemN: [pulseaudio] main.c: System mode refused for non-root user. Only starting the D-Bus server lookup service.E: [pulseaudio] pid.c: Daemon already running.E: [pulseaudio] main.c: pa_pid_file_create() failed.So any idea how I should interpret this, or doing anything about it?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Johan Kragsterman johan.kragster...@capvert.se skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Johan Kragsterman johan.kragster...@capvert.seDatum: 2014-04-10 14:35Ärende: [Ltsp-discuss] no sound on fat clientsHej!Having a success with installing a system where fat clients recieves streaming TV from mumudvb to local VLC player, I now got stupidly stuck on sound!!!No local sound on the fat clients...System:Edubuntu 13.10 as a KVM VM on omnios, with a lot of juice: 16 GB RAM, 8 CPU, fast diskaccess, fast network. AMD64 fat chrootThe client hardware I'm using atm, is a Dell Optiplex Gx620, only 2 GB ram so far. When I use it a normal computer, and boot it from disk with same OS, I can stream dvb from the same mumudvb server with sound, no problems, as well as youtube, etc...But no sound on the fat clients. Not from vlc nor from youtube, etc. Sound devices are there, both when I do lspci and if I put in a usb sound device and do a lsusb, and if I open alsamixer. Been googling about this, and seen various fixes, like:SSH_FOLLOW_SYMLINKS=false in your lts.conforinstall pulseaudio-module-zeroconfwith some configurations.as well as others.Though no success so far, so got to ask you guys for help here...Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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Re: [Ltsp-discuss] fat client local apps...?

[Johan Kragsterman]

Hej!Thanks, Matt, that should probably be the correct thing to do. I'll check it immediatly and get backBest regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Matt Johnson johnson...@gmail.com skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Matt Johnson johnson...@gmail.comDatum: 2014-04-06 10:22Ärende: Re: [Ltsp-discuss] fat client local apps...?If I open a terminal on a thin client, the command prompt reads 'matt@servername'. If I remember correctly, when I open a terminal on a fat client, the command prompt reads 'matt@workstation' or similar.
--MattOn 4 April 2014 17:59, Johan Kragsterman johan.kragster...@capvert.se wrote:
Hej!
So how come I couldn't start the apps(google-chrome, vlc, cheese) with the meny? Items didn't show up in meny(chrome was there since it was installed in the server, but not the others, and when I try to start them from the start script, they didn't start(vls, cheese), or chrome started the one on the server.
AND they start when I run ltsp-localapps on the terminal
Can the ltsp-build-client scrip have gone wrong in some way? I KNOW I was passing the right options with --fat-client, --fat-client-desktop, ubuntu-desktop, etc.
Can I check the result somewhere? Is there something that tells me wether there is a fat client or a thin client build?
Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Vagrant Cascadian vagr...@debian.org skrev: -
Till: ltsp-discuss@lists.sourceforge.netFrån: Vagrant Cascadian vagr...@debian.org
Datum: 2014-04-04 18:42Ärende: Re: [Ltsp-discuss] fat client local apps...?On Fri, Apr 04, 2014 at 12:11:38PM +0200, Johan Kragsterman wrote:
 I think I miss something here...  Got Fat clients running, no problems with that, but can't get hold of how to start the local apps...?With fat clients, there's no need to run anything as a localapp, as essentially
all the applications are run locally... Is it that I don't understand the squash file system, perhaps?With fat clients (or with thin clients + localapps) all of the applicationsneed to be installed in the client chroot/image.
If you want a thin client with a few localapps, you'll want to look at theLOCAL_APPS_MENU options in the lts.conf manpage if you want to start them frommenus. You may need to install the ltsp-docs package to get the lts.conf
manpage.live well,vagrant--_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:
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Re: [Ltsp-discuss] fat client local apps...?

[Johan Kragsterman]

Hej! Yeah, this showed I was in the server environment: johan@ltsp, not johan@momma, which is the name(momma) for the workstation I assign through the dhcpd.conf.I could of coarse have done just a ifconfig, because that is also showing me where I am. Not in the 192.168.0. 200 where momma is, but in 192.168.255.20 where ltsp is. Though I can ping momma at192.168.0. 200, so that shows it is definitly two different environments!So obviously the build of the fat client must have gone wrong! Can someone point me to where the logs are for the builds? Before I make a new build, I'd like to see what was going wrong.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Matt Johnson johnson...@gmail.com skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Matt Johnson johnson...@gmail.comDatum: 2014-04-06 10:22Ärende: Re: [Ltsp-discuss] fat client local apps...?If I open a terminal on a thin client, the command prompt reads 'matt@servername'. If I remember correctly, when I open a terminal on a fat client, the command prompt reads 'matt@workstation' or similar.
--MattOn 4 April 2014 17:59, Johan Kragsterman johan.kragster...@capvert.se wrote:
Hej!
So how come I couldn't start the apps(google-chrome, vlc, cheese) with the meny? Items didn't show up in meny(chrome was there since it was installed in the server, but not the others, and when I try to start them from the start script, they didn't start(vls, cheese), or chrome started the one on the server.
AND they start when I run ltsp-localapps on the terminal
Can the ltsp-build-client scrip have gone wrong in some way? I KNOW I was passing the right options with --fat-client, --fat-client-desktop, ubuntu-desktop, etc.
Can I check the result somewhere? Is there something that tells me wether there is a fat client or a thin client build?
Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Vagrant Cascadian vagr...@debian.org skrev: -
Till: ltsp-discuss@lists.sourceforge.netFrån: Vagrant Cascadian vagr...@debian.org
Datum: 2014-04-04 18:42Ärende: Re: [Ltsp-discuss] fat client local apps...?On Fri, Apr 04, 2014 at 12:11:38PM +0200, Johan Kragsterman wrote:
 I think I miss something here...  Got Fat clients running, no problems with that, but can't get hold of how to start the local apps...?With fat clients, there's no need to run anything as a localapp, as essentially
all the applications are run locally... Is it that I don't understand the squash file system, perhaps?With fat clients (or with thin clients + localapps) all of the applicationsneed to be installed in the client chroot/image.
If you want a thin client with a few localapps, you'll want to look at theLOCAL_APPS_MENU options in the lts.conf manpage if you want to start them frommenus. You may need to install the ltsp-docs package to get the lts.conf
manpage.live well,vagrant--_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:
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[Ltsp-discuss] fat client local apps...?

[Johan Kragsterman]

Hi!I think I miss something here...Got Fat clients running, no problems with that, but can't get hold of how to start the local apps...?Is it that I don't understand the squash file system, perhaps?I checked the /opt/ltsp/amd64/usr/bin directory, but couldn't start it from there.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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[Ltsp-discuss] Ang: fat client local apps...?

[Johan Kragsterman]

Hi again!Well, been studying a little bit more, and I see that I have to run "ltsp-localapps" in the terminal to run the apps. That worked with the most important apps like google-chrome and vlc, but not with cheese. I found a script: ltsp-localappsd. I guess this is involved with the launch of the apps, huh?So, two questions here:1: How do I get the local apps to run from a desktop icon?2: What could be the problem with cheese? I checked the installation, and that was ok, according to apt.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Johan Kragsterman/Capvert skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Johan Kragsterman/CapvertDatum: 2014-04-04 12:11Ärende: fat client local apps...?Hi!I think I miss something here...Got Fat clients running, no problems with that, but can't get hold of how to start the local apps...?Is it that I don't understand the squash file system, perhaps?I checked the /opt/ltsp/amd64/usr/bin directory, but couldn't start it from there.Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert


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Re: [Ltsp-discuss] fat client local apps...?

[Johan Kragsterman]

Hej!So how come I couldn't start the apps(google-chrome, vlc, cheese) with the meny? Items didn't show up in meny(chrome was there since it was installed in the server, but not the others, and when I try to start them from the start script, they didn't start(vls, cheese), or chrome started the one on the server.AND they start when I run ltsp-localapps on the terminalCan the ltsp-build-client scrip have gone wrong in some way? I KNOW I was passing the right options with --fat-client, --fat-client-desktop, ubuntu-desktop, etc.Can I check the result somewhere? Is there something that tells me wether there is a fat client or a thin client build?Best regards from/Med vänliga hälsningar frånJohan KragstermanCapvert-Vagrant Cascadian vagr...@debian.org skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: Vagrant Cascadian vagr...@debian.orgDatum: 2014-04-04 18:42Ärende: Re: [Ltsp-discuss] fat client local apps...?On Fri, Apr 04, 2014 at 12:11:38PM +0200, Johan Kragsterman wrote: I think I miss something here...  Got Fat clients running, no problems with that, but can't get hold of how to start the local apps...?With fat clients, there's no need to run anything as a localapp, as essentiallyall the applications are run locally... Is it that I don't understand the squash file system, perhaps?With fat clients (or with thin clients + localapps) all of the applicationsneed to be installed in the client chroot/image.If you want a thin client with a few localapps, you'll want to look at theLOCAL_APPS_MENU options in the lts.conf manpage if you want to start them frommenus. You may need to install the ltsp-docs package to get the lts.confmanpage.live well,vagrant--_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:  https://lists.sourceforge.net/lists/listinfo/ltsp-discussFor additional LTSP help,  try #ltsp channel on irc.freenode.net


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[Ltsp-discuss] (no subject)

[Johan Kragsterman]

Hi there!Been running LTSP for quite a few yrs now, and so far it haven't been necessary for me to do any windows redirection setups.But now, I got a client who wants me to setup a quite complex environment for him. He wants a system that he can reach both local and remote, and it looks like I can do it with a combination of LTSP and Cendio's thinlinc system.Their desktop environment will be windows terminal server.Though there are some things that I need to know more about: Main thing right now is the ability to redirect USB to the windows server. Client has car service, with workstations at the workshop area. They provide services, among others, to Volvo cars, and Volvo has a special device that they connect to the car with cables, and then it communicates via bluetooth to a USB stick on the workstation.So, can I redirect this USB communication to the windows server with LTSP? I know I can do it with thinlinc, but I don't know if I can do it with LTSP.Regards Johan

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Re: [Ltsp-discuss] USB/Bluetooth

[Johan Kragsterman]

What I need is to redirect the USB/bluetooth communication to the windows server, because the application to run the service is a windows application. So is that not possible? I believe I can do that in thinlinc, but I would prefer to use LTSP.Rgrds Johan-asmo.koski...@arkki.info skrev: -Till: ltsp-discuss@lists.sourceforge.netFrån: asmo.koski...@arkki.infoDatum: 2013.03.05 15:41Ärende: Re: [Ltsp-discuss] USB/Bluetooth--8--Client has car service, with workstations at the workshop area. Theyprovide services, among others, to Volvo cars, and Volvo has a specialdevice that they connect to the car with cables, and then it communicatesvia bluetooth to a USB stick on the workstation. So, can I redirect thisUSB communication to the windows server with LTSP? I know I can do it withthinlinc, but I don't know if I can do it with LTSP.--8--Run that USB/Bluetooth thing with Desktop/Laptop Linux (Ubuntu?). If it isok, then it works LTSP with fat clients, too. Don't try ordinary thinclients for something like Bluetooth.https://help.ubuntu.com/community/UbuntuLTSP/FatClientshttp://jonathancarter.org/2010/11/24/how-do-ltsp-fat-clients-work/Maybe not for you, but very easy way to run full blown fat clients.https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnpBest Regards Asmo Koskinen.--Everyone hates slow websites. So do we.Make your web apps faster with AppDynamicsDownload AppDynamics Lite for free today:http://p.sf.net/sfu/appdyn_d2d_feb_Ltsp-discuss mailing list.  To un-subscribe, or change prefs, goto:  https://lists.sourceforge.net/lists/listinfo/ltsp-discussFor additional LTSP help,  try #ltsp channel on irc.freenode.net

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