[K12OSN] Resolution Config Problem

Eric John Nagel enagel at northlakechristian.org
Wed Nov 18 15:02:56 UTC 2009

> Eric,
> When you cannot get the mode you are after, the best thing to do is:
> 1. as you say, make sure the config file is being read.  One way to do
this is to set:
> SCREEN_02=shell
> SCREEN_07=ldm
> in lts.conf and reboot the client.  Once the client is booted, you
should be able to press ctrl-alt-F2 to get to screen 2 and be presented
with a root shell on the client.  If you do not get a root shell, your
config file is not being read.

OK, it did NOT give me a shell, only the blinking cursor.  So, as I
suspected the lts.conf file is NOT being read.  What logs can I look at to
see why it is not reading this file?

> 2. Look in the client's Xorg log file.  If you follow #1 above, and it
*does* work, from the root shell, scp the Xorg log file to the server:
> scp /var/log/Xorg*log user at server:/home/user
> Then, attach the log file to an email to this listserv, if you want some
help with it.  The log file will give you all the gory details of what
modes it rejected and why.  That should give you all the info you need
to adjust things properly and not to guess.  :)

I could copy the file by using the Xwindows Terminal and compared it to
/var/log/Xorg.0.log on the ltsp server and it is the same file.  See
attached log (only first half of the log b/c this site restricts the size
of the post).  This file has nouveau drivers in it which is what the ltsp
server has, an nvidea chip.  It seems to be the ltsp server log file, not
the thin client.  BTW, these clients do not have a local HD.

I look forward to any new suggestions.  Thanks again for your help.

> -Gadi
> PS: One other note:  in some older versions of LTSP5, you needed to add
a line:
> in order for a xorg.conf file to be created from your parameters.  Try
adding that line to your pasted configuration and see if that helps.
> On Tue, 2009-11-17 at 09:09 -0600, Eric John Nagel wrote:
>> > You most likely need to adjust:
>> >
>> >
>> > (see attached email)
>> >
>> > -Gadi
>> > --
>> >
>> Thank you so much for your help.
>> Here is what we have added to our /var/opt/tftpboot/ltsp/i386/lts.conf
>> [default]
>>     XSERVER=trident
>>     X_COLOR_DEPTH=16
>>     #XRANDR_MODE_0="1024x768"
>>     X_VERTREFRESH="55-75"
>>     X_HORZSYNC="30-100"
>>     X_MODE_0=1024x768
>> You may notice we also tried it with the XRANDR_MODE_0="1024x768"
(uncommented) and the XRANDR_DISABLE and X_MODE_0 commented out. Either
way it does not work.  Still 800x600 Max.
>> We would really like to get this to work!  Any other suggestions? How
can we tell that this file is being read?
>> Must we reboot the server and client to test?  (We have.)
>> Shlama w'burkate, ejn
>> _______________________________________________
>> K12OSN mailing list
>> K12OSN at redhat.com
>> https://www.redhat.com/mailman/listinfo/k12osn
>> For more info see <http://www.k12os.org>
> --
> --------------------------------------------------------
> Gideon Romm | Proud LTSP Developer
> ltsp at symbio-technologies.com
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Shlama w'burkate, ejn
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