GDM resolution problems when logigng out

[Vincent Trouilliez]

> Well I have the exact opposite problem. When i first turn on my
> computer, it boots into a 640x480 GDM. If i Log into Gnome - Gnome is
> at 640x480 and the screen resolution prog only allows 640x480. Now -
> If I hit Ctrl+Alt+Backspace either in Gnome or whilst still at GDM to
> restart X and GDM it comes back as my normal 1024x768....
> Any clues??

Are you using Hoary ? I think it was a common problem with HOary
recently. I tried Array 4 the other day and had this kind of problem too
(stuck at 640x480) because, somehow, my monitor/CRT was not detected at
all. Wart detected it fine though. 
So I modified Hoary's xorg.conf file using the monitor infos from
Warty's XF86Config-4. After that, it worked. (well, bar the little
proble I posted originally about..)

HTH

Vince