I'm seeing the X process take a lot more CPU time to run any workload in
1280x768 compared to a standard VGA mode like 1280x1024.
For example running a text scrolling app (lots of XCopyArea calls) I see the
following CPU usage figures:
1280x1024: 6.75%
1280x768: 10.53%
top shows that the X process is the only one to show a change between
the two modes.
With XVIDEO apps the difference is from 50% to 70% to play a movie.
This happens with the i810 driver and the via driver so I don't think
its a driver
specific issue. I think that X is changing its behavior.
Is it possible that X has turned off it acceleration in 1280x768 mode?
What can I look at to find out what the problem is?
Barry
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