Setting Resolutions and Refresh Rates

[Robert Boucher]

Use the gtf command (included with XFree86 4.3) to generate ModeLines
for the resolutions and refresh rates you want to run X and your games at.

As an example I'll use 800x600 at 85Hz.  So I'll run "gtf 800 600 85" to 
create a mode line for that resoution at that refresh rate.

Take the ModeLine output line and paste it into the monitor section in
your XF86Config file.

Rename the ModeLine from "800x600_85.00" to just "800x600".

This will force XFree86 to only use the refresh specified by the
ModeLine you created for the resolution.  Other refresh rates will be 
ignored/excluded.

Do this for all the resolutions you want to run at.  My monitor section 
has (watch for wrapping):

Modeline "1024x768" 94.39 1024 1088 1200 1376 768 769 772 807 -HSync +Vsync
Modeline "800x600"  56.55  800  840  928 1056 600 601 604 630 -HSync +Vsync
Modeline "640x480"  35.71  640  672  736  832 480 481 484 505 -HSync +Vsync

This worked for me.

-Rob