Etienne,
Some KDE errors would show up in ~/.xsession-errors.
Ubuntu has excellent documentation about debugging X at
https://wiki.ubuntu.com/X/Debugging. Some notes about debugging KDE can be
found at http://ubuntuforums.org/showthread.php?t=236065.
It seems that it might be easier to clean you
Etienne,
What is common to all these bug reports is that neither Xorg.0.log nor
dmesg show anything unusual. To see what your problem is, you need to
try to produce a core dump, look at it with gdb, and post the backtrace
to this forum.
Now I don't run (K)ubuntu, so I do not now the specifics of
Could you try the patches posted at
https://bugs.freedesktop.org/show_bug.cgi?id=13398?
I believe they should solve this bug.
--
logout hang xserver with vesa and ati open drivers
https://bugs.launchpad.net/bugs/119635
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