Your install may have defaulted to some very generic settings for your XFree install. I dont know if this will help you or not (it's for a 2645-5AU), but the 'config' for the X windows is there, and it provides the info that you should be inputing when you 'config' your X windows:
http://condor.depaul.edu/~jkristof/m....1-tp600e.html
That info changes from time to time, depending your Xfree release, but the 'data' should be OK, however, as with anything that can burn up your system, your results may vary. Try and verify as much of the frequency/chipset info prior to 'changing' anything. But I know that when you get your X working your chipset up to its peak performance, everything looks better.
See
http://condor.depaul.edu/~jkristof/X...4.20030101.txt for more stuff!
Hints: Try using 16bit first, then try some of the 24bit.