[Bug 14886] New: Garbage on lower half of screen, when extending via xrandr

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=14886

           Summary: Garbage on lower half of screen, when extending via
                    xrandr
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: mblaesing at gmx.de
         QAContact: xorg-team at lists.x.org


Hello,

I had a dual-head setup running, that consisted of my laptop screen (1680x1050)
and an external monitor (1400x1050) in a "wide-screen" config (the two screens
besides each other).

The problem was always, that the 3D rendering engines waves of after 2560 (yes
there is a corresponding bug report open). So I want to switch to a stacked
setup (on screen above/below the other). Influence mainly be textured video,
that magicly disappears behind the border (not to surprising).

The problem: After I activate the second screen, the lower half is garbled. I
can "fix" this by running glxgears and moving it over the area. After that
everything is fine - moving another "2D"-Window over the garbled area does not
help.

I'll attach the running log, the config and screenshots.

Thanks in advance

Matthias


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