[Bug 22684] New: Repaint problem with KDE 4.3, Qt 4.5.2, and Compositing

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=22684

           Summary: Repaint problem with KDE 4.3, Qt 4.5.2, and Compositing
           Product: xorg
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: Tanktalus at gmail.com
         QAContact: xorg-team at lists.x.org


After running with compositing on with KDE 4.3 (4.2.95 = rc1) and Qt 4.5.2 for
a while, the whole screen has problems repainting.  That is, the whole screen
goes black and starts repainting what seems like from the bottom of the z-order
on up, with enough of a delay between them for me to notice (still taking less
than a tenth of a second to run to completion, though).  What's worse is that
it doesn't really complete - it leaves portions of the screen unfinished:
either it's still black, or it has something from lower in the z-order painted
there (perhaps only partially itself).  And then it starts the whole thing over
again less than half a second later.

Turning off compositing stops this madness immediately.

I'm not sure if this is driver, xorg, Qt, or KDE, or maybe something else, but
I thought I'd start here.

Radeon 3870HD, xorg-server 1.6.2, mesa 7.4.4, xf86-video-ati from git.


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