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There were a few points in my departure to the latest version of Edubuntu - 7.10 that I thought I may need to downgrade. Unfortunately, it's often the case that a new version of the operating system comes complete with a new set of bugs that only maturity will iron out.

One problem in particular was really bugging me and rendered the upgrade useless for our system if I didn't find a fix - quick! The problem came when a thin client displayed it's login screen, the monitor would just go off with a disturbing message (from the monitor) saying 'unsupported resolution' or something to that effect - the message may vary between different models of monitors.

It quickly became clear that the monitor does not support the resolution that Edubuntu or Xorg was trying to output. I thought a quick tweak in the admin panel might sort things out but the problem was a little deeper - as are many linux problems. Once again I was forced to use the now very familiar terminal.

Step 1
Locate the file lts.conf using this path:
/opt/ltsp/i386/etc/lts.conf

Step 2
Add the following line:
[default]
X_MODE_0 = 1024x768 #or other resolution that you'd like to use

Step 3

Bring up the terminal and type:
ltsp-update-image

Step 4
Reboot the server, when it's all booted up then all systems go with the thin clients! Now you can see!


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2 comments:

At 11 December 2007 22:13 LNS said...

Actually, when editing the lts.conf file you don't have to rebuild the image file - it is parsed outside of the actual image file. Only when editing files within /opt/ltsp/arch do you have to rebuild.

Cheers!

 
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