The driver remains buggy, problem is either with asynchronous memory
read from the graphics card or masking problem, who knows? At 768x576 @
60Hz resolution the screen is almost undistorted, but at the resolution
the Ubuntu 8.04 was trying to install (1600x1200?) it was close to
impossible to navigate on the screen.

This may be a problem with the double-buffering or anything to do with
memory access.

The distortion works this way:
some line address ranges get confused, so that whole columns may appear on a 
second location.

Even worse thing happened after I took the photo. I am not able to
switch monitor resolution from the 1280x1024 to anything else!


** Attachment added: "P1070855.JPG"
   http://launchpadlibrarian.net/15479397/P1070855.JPG

-- 
SIS662 graphics driver
https://bugs.launchpad.net/bugs/164258
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