[Bug 72777] New: Mutter/gnome-shell graphical glitches on radeonsi

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=72777

          Priority: medium
            Bug ID: 72777
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Mutter/gnome-shell graphical glitches on radeonsi
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: dan.doel@gmail.com
          Hardware: Other
            Status: NEW
           Version: DRI CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 90859
  --> https://bugs.freedesktop.org/attachment.cgi?id=90859&action=edit
glitched control center

I've been testing out gnome with the radeon drivers off and on, and have
observed some graphical glitches with the window compositing. The easiest way
I've found to produce a glitch is to use the gnome control center. Entering the
"Displays" section, or entering any other section and going back results in a
graphical glitch where something resembling the window appears to be composited
over the top and left sides of the window. Triggering a repaint (by changing
focus) gets rid of the corruption.

Normally I use Intel integrated graphics, and I have not observed this glitch
with them. Therefore, I suspect this is a problem with the Radeon driver,
rather than mutter or gnome-shell. It may also be specific to radeonsi, as that
is what I have (a Radeon 7870); I cannot confirm that it happens on any other
Radeon drivers.

I have, however, created a gnome bug, just in case:
  https://bugzilla.gnome.org/show_bug.cgi?id=720587

I believe I have also seen similar glitches involving Firefox and scrolling
youtube videos toward the title bar. But I cannot reliably reproduce such
glitches.

I am using:
    Arch Linux
    kernel 3.12.5
    mutter, gnome-shell, etc. 3.10
    ati-dri from git, 2013-12-16
    llvm from svn, 2013-12-16
    xf86-video-ati 7.2.0
    Radeon 7870 (pitcairn chipset)

I'll attach some screenshots. Let me know if you'd like any other information.

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