I've got the exact opposite problem...

I tried bumping down the resolution from the default 1600x1200 to something more readable (like 1280x1024 or 1024x768 ... which are supported by the video card on Linux).

Everytime I try it just bounces back to 1600x1200.

Normally I wouldn't mind, but I've been doing some video editing and it is simply too large a display for the 8MB AGP card to be able to edit video in real time...it's pretty fast, but not that fast.

I've used knoppix screen=1280x1024 and knoppix screen=1024x768 to no avail.

Mach64 (ATI Rage Pro)