I simply cannot believe Gutsy Gibbon has done this TWICE to me in the past month.
My xserver will just give up and die. In fact, I don't even know if it is that. Somehow when I start up my computer, it will tell me the resolution is off, and will ask me to configure it.
Ubuntu will automatically default to low graphics mode with a Vesa video card driver, and no matter what I do, I can't change it back! It bothers the crap out of me. the first time, I just reinstalled ubuntu because there are absolutely no resolutions out there for this!
This time, on my
eee pc it did it to me, and all I did was in the grub menu, boot in recovery mode, and then typed reboot.
now if that doesn't solve it for you, I did the quick fix found
here first, but it didn't seem to do anything. Good luck!