[Bug 19215] cursor corruption when moving over vertical 'strips' of the screen

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=19215


Steve <stephen.boddy at btinternet.com> changed:

           What    |Removed                     |Added
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                 CC|                            |stephen.boddy at btinternet.com




--- Comment #10 from Steve <stephen.boddy at btinternet.com>  2009-03-10 10:49:01 PST ---
Something that might be relevant: The corruption appears to be visible when the
cursor spans a strip that is the last 10 or so pixels of the stride value given
here:
http://cgit.freedesktop.org/xorg/driver/xf86-video-ati/tree/src/radeon_cursor.c#n204
i.e. pixels where x=245 to 255. This could be expressed as every (256*n-10) to
(256*n) where n>=1. If you use a jumbo sized pointer you can see that the
strips of cursor on either side of the range given are OK.

There is an additional corruption which is seen as the cursor vertically
bouncing. This occurs at 204+(256*n) where n>=0.

I see both symptoms on both screens with an X1400 Lenovo Z61m using LVDS
(1680x1050) and CRT (1280x1024). According to xdpyinfo these are treated as
screen #0 @ 2960x1050 pixels.

This was with 6.11.0.99+git20090305.5dc4b69f-0ubuntu0tormod~intrepid package.


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