I have just installed xubuntu 8.10 on new hardware. It is based on a an Asus P5Q-VM motherboard (all Intel, including graphics) has 8Gb of memory and a quad code processor.
It all installed OK without any problems and ran OK. However since I set the graphics resolution to 1600x1200 (the display's default) it crashes *totally* on exiting from X. It's a total, hard, crash - CTRL/ALT/Fn won't switch to a text console, I can't ssh into the system (which I can before it has crashed) and I can't ping the system.
There is one other symptom, when I try and switch to a text mode console (using CTRL/ALT/Fn) even when the system is running OK I get a message from my monitor saying "this mode isn't supported" which seems a little odd on a monitor capable of 1600x1200 at more than 60Hz.
The monitor is a Dell 2001FP and I'm using the DVI-D input.
Does anyone have any ideas how to diagnose this problem? I have hunted around the files in /var/log but I can't see anything that looks significant there.
The xorg.conf file is totally uncustomised:-
Section "Device" Identifier "Configured Video Device" EndSection
Section "Monitor" Identifier "Configured Monitor" EndSection
Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" EndSection