this is from my thread (http://ubuntuforums.org/showthread.php?t=1245918)
I found a problem after updating the kernel.
$ sudo grep -n "^(EE)" /var/log/Xorg*log
/var/log/Xorg.0.log:300:(EE) XKB: No components provided for device Virtual core keyboard
/var/log/Xorg.1.log:79:(EE) Failed to load /usr/lib/xorg/modules/extensions//libglx.so
/var/log/Xorg.1.log:81:(EE) Failed to load module "glx" (loader failed, 7)
/var/log/Xorg.1.log:1408:(EE) USB Optical Mouse: Read error: No such device
/var/log/Xorg.1.log:1425:(EE) USB Optical Mouse: Read error: No such device
/var/log/Xorg.failsafe.log:1331:(EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found)
i have tried to modified my xorg.conf by adding
in the modules section (since it wasn't there at the beginning)
but it doesn't work.
running nvidia-xconfig DOES NOT solve the problem.
now every time i restart my computer, the "ubuntu running in low graphic" window always appear, and i need to choose "exit to console login" to get a 24 color depth login screen, and then everthing works fine (compiz, video). but it's annoying.
how could the driver is not there?
i installed nvidia official driver for GeForce 8600M GS linux 32 bit, 185.18.31-pkg1
it's been three days i have trying to solve this, but the problem still persists.
any help would be greatly appreciated.