Display corruption on 1.8.0/Mesa 7.8
martyj19 at comcast.net
Sat Apr 3 17:44:39 PDT 2010
I'm having a nasty amount of corruption on DG965WH, Linux 184.108.40.206, xorg-server 1.8.0, Mesa 7.8, libdrm 2.4.20. The same with 1.7.6 and 7.7 works fine. All built from release tarballs and unmodified (except a two-line backport of symbols KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8 and KMS_BO_TYPE_SCANOUT_X8R8G8B8 to get 7.7 to compile against 2.4.19/20).
Most things are okay. I am experiencing a lot of corruption on vertical scrolling; some rectangular areas of the display don't redraw. This is particularly ugly when editing a source file, because I am never sure where I am clicking or selecting. It is most noticeable on a small scroll such as you get with the scroll wheel. I see it also when scrolling a web page in a browser. It tends to be reproducible if you scroll down and then up one scroll wheel click. If I bring up a .jpg in the browser, I get some rectangular areas where the image is white. If I then do a "back" and "forward" to get it redrawn, it is completely drawn. I know this is not the best description, but I am looking for guidance on where to look first.
I have had to revert this to 1.7.6/7.7 in order to keep working, but if anyone has an idea which component it is, I could do some bisecting; unless someone has an aha! moment and can solve it just from the description.
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