[Bug 31066] New: Screen updates follows user input with dual-screens when using 3D

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=31066

           Summary: Screen updates follows user input with dual-screens
                    when using 3D
           Product: xorg
           Version: 7.5
          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: lvella at gmail.com
         QAContact: xorg-team at lists.x.org


Using the attached xorg.conf, which sets up 2 Xorg screens, when I run any
OpenGL program (tested with glxgears, OpenArena and mplayer), the screen is
frozen while I am not moving the mouse or typing something in the keyboard. So,
if I run mplayer with gl backend, the movie (including the audio), plays nicely
while I am moving the mouse, and freezes while there is no input.

When an OpenGL application is started, every moving/flashing thing in both
screens is affected, so if I run glxgears on DISPLAY=:0.1, the network usage
icon in the taskbar of DISPLAY=:0.0 also freezes while there is no input.

If I run one OpenGL application in one screen, and another in the other screen,
the effect is avoided for a few seconds.

If I comment everything in the xorg.conf related to dual-screen zaphod mode, I
get an extended desktop and the bug is not hit, so OpenGL applications works as
expected in both monitors.

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