[Bug 39121] New: Random black shaped artifacts in gnome-shell

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=39121

           Summary: Random black shaped artifacts in gnome-shell
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Drivers/Gallium/r600
        AssignedTo: dri-devel at lists.freedesktop.org
        ReportedBy: vljn at ovi.com


Created an attachment (id=48943)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=48943)
Picture of an artifact

Hi

There are some black shaped artifacts occuring over window on gnome-shell.
I managed to record a video and extract an image displaying such an artifact.

This bug is not deterministic, however it is very frequent : to make it
appears, I only moved a terminal window on the bottom edge of the screen.

Note that this bug is not specific to gnome-shell, it also appears on kwin
effect in kde, and in others circumstance in gnome-shell, but the scenario
described above is the easiest to reproduce.

My hardware is AMD Zacate E350 (evergreen based), using Mesa 7.11 rc1 (bug is
also in 7.10.x) on opensuse 11.4 64bits(is also on Fedora 15), with r600g
drivers, libdrm 2.4.26 and ati ddx 14.2, kernel 2.6.39.

Vincent

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