[Ltsp-discuss] Xorg uses all the CPU.

2012-03-14 Thread relosrl
The server, the client and the net is overdimensioned. The client  has 
slowing downs when it manages modifications of screen. Sometimes it 
stops completely for 1 or 2 seconds. If I use top on local bash, I see 
that it's xorg to occupy all the resources. Radeon module is on and 
glxinfo is ok. If I start OS on client I haven't problem with xorg.
Ubuntu 64 for server. 386 image for client. Xfce or TDE is equal.
What can I do for resolve the problem?
Thanks.
Rodolfo

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[Ltsp-discuss] Best way to connect to server

2012-03-14 Thread Pierre AUSSAGUEL
Hi List,

I have a running LTSP server (Debian based)
I have a very old laptop (P 166 based / 48 MB RAM) that does not have 
floppy nor cdrom nor pxe capability. The NIC is a PCMCIA One.

After trying mutiple solutions (gPXE, netboot ...) I finally installed a 
minimal debian system on it, and made the PCMCIA work.

What is the best way to connect to the server ?

- Some kind of chainloading to boot from the server once the network is up ?
- some floppy image (like wireless_ltsp) that I did not manage to boot 
using LILO ?
- Install a minimal X and connect trough it ? (I am afraid doing so 
would lead to sound and usb issues as well as slow performance)

Thank's for your advice.

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Re: [Ltsp-discuss] Xorg uses all the CPU.

2012-03-14 Thread Jan Middelkoop
Some tweaks you can do to get Xorg CPU usage down, in lts.conf:

X_COLOR_DEPTH=16
LDM_DIRECTX=True

Read the manpage for lts.conf what these are exactly.  Enabling 
LDM_DIRECTX could pose a security threat on networks where packet 
sniffing might be an issue.  On the other hand, if you trust the people 
connected to your LTSP network, you could very well enable it.

Met vriendelijke groet,

Jan Middelkoop
Recreatie en Zorg Groep B.V.

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Op 14-03-12 09:43, relosrl schreef:
 The server, the client and the net is overdimensioned. The client  has
 slowing downs when it manages modifications of screen. Sometimes it
 stops completely for 1 or 2 seconds. If I use top on local bash, I see
 that it's xorg to occupy all the resources. Radeon module is on and
 glxinfo is ok. If I start OS on client I haven't problem with xorg.
 Ubuntu 64 for server. 386 image for client. Xfce or TDE is equal.
 What can I do for resolve the problem?
 Thanks.
 Rodolfo

 --
 Virtualization  Cloud Management Using Capacity Planning
 Cloud computing makes use of virtualization - but cloud computing
 also focuses on allowing computing to be delivered as a service.
 http://www.accelacomm.com/jaw/sfnl/114/51521223/
 _
 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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Re: [Ltsp-discuss] Best way to connect to server

2012-03-14 Thread Alkis Georgopoulos
On 14/03/2012 04:51 μμ, Pierre AUSSAGUEL wrote:
 ...The NIC is a PCMCIA One.

 What is the best way to connect to the server ?

You only need to transfer the LTSP kernel and initrd to your local disk.

Copy the kernel from /srv/tftp/ltsp/i386/vmlinuz etc
to a new /ltsp/ dir on your client.
Then create grub entries (from /etc/grub.d/40-custom or so) for this 
kernel, with the same boot parameters as specified in your server's
/srv/tftp/ltsp/i386/pxelinux.cfg/default.

If special steps were needed for your PCMCIA card to work, do them in 
your server LTSP chroot to get an initramfs that supports it.

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Re: [Ltsp-discuss] Best way to connect to server

2012-03-14 Thread Ben Green
Quoting Pierre AUSSAGUEL pierre_aussag...@yahoo.fr:

 Hi List,

 I have a running LTSP server (Debian based)
 I have a very old laptop (P 166 based / 48 MB RAM) that does not have
 floppy nor cdrom nor pxe capability. The NIC is a PCMCIA One.

 After trying mutiple solutions (gPXE, netboot ...) I finally installed a
 minimal debian system on it, and made the PCMCIA work.

 What is the best way to connect to the server ?

 - Some kind of chainloading to boot from the server once the network is up ?

I think this approach. I've only done this sort of thing on 4.2  
(compiled myself but based on the wireless-ltsp work). Once you've got  
a running kernel on your guest, which should include all the LTSP init  
stuff in there by the way - the process should continue. Basically,  
try putting the LTSP chroot's kernel on the thin client and see what  
happens. Perhaps this could be done by installing ltsp-client or  
ltsp-client-core on the thin client Debian install. There may be  
further ammendments to the initramfs before it'll work for your  
specific clients.

Have a look at the following file in the ltsp-client-core packages for  
more clues as to what is happening:

/usr/share/initramfs-tools/conf.d/ltsp
/usr/share/initramfs-tools/hooks/ltsp_nbd
/usr/share/initramfs-tools/hooks/udhcp
/usr/share/initramfs-tools/scripts/init-premount/udhcp
/usr/share/initramfs-tools/scripts/ltsp_nbd
/usr/share/initramfs-tools/scripts/nfs-bottom/ltsp

Hope this gives you some clues, and I hope you furnish the LTSP  
project with a working PXEless client image once you've completed it!

Please please let us know how it goes, I've been wanting to sort this  
sort of booting for 5.x for some time but not got round to it.

For reference, the rest of ltsp-client-core:
http://packages.debian.org/squeeze/i386/ltsp-client-core/filelist

Cheers,
==
 From Ben Green

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