I just used this solution to fix the display on my VersaTab II (also called a WalkAbout Hammerhead XRT), running Ubuntu 9.04. I did have to make a couple modifications that I thought I would explain here.
I had to change the Device Bus ID (obviously) - to get your Bus ID, run lspci, find your VGA compatible controller (Silicon Motion, Inc. SM712 LynxEM+ on my system), and your Bus ID is the series of numbers on the left.
Code:
> lspci
02:05.0 VGA compatible controller: Silicon Motion, Inc. SM712 LynxEM+ (rev a0)
The format in the lspci printout is different from what is required in the xorg file... the last two numbers in the lspci display are separated by a period (.); in the xorg file, this should be a colon {:}, as shown above.
The other thing I changed was my default resolution - in the example above it's 1024x768, but the max res on my machine is 800x600, so I changed it accordingly. Hope that helps others.
Many thanks to virgo977virgo!!!
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