[Bug 25307] New: radeon [9600AGP] screen temporarily fades to black (blinks / flickers) when rendering occurs

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25307

           Summary: radeon [9600AGP] screen temporarily fades to black
                    (blinks / flickers) when rendering occurs
           Product: xorg
           Version: 7.4
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: evilcleric at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=31490)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=31490)
radeon [9600AGP] Xorg.0.log

I'm using the default KDE installation of OpenSUSE 11.2 (kernel 2.6.31.5-0.1;
Xorg 7.4-35.3, KDE 4.3.1), Radeon 9600 AGP, DVI, Samsung 2493hm monitor.  Kwin
effects are disabled. The default installation does not create xorg.conf.

Sometimes, after the system boots, X becomes unstable and starts to fade to
black (blink / flicker) as soon as I actually start doing something: moving a
mouse cursor, open a window, etc.  When experiencing the bug, the screen
flickers *every* time any rendering occurs. The first sign the above mentioned
bug is about to occur is the initial "blink" of the KDE splash screen during
boot.  The bug occurs about 15%-20% of the times my system boots.

The described "blinking" condition can be cured by restarting X or starting a
new user session. There is a small chance, however, to initiate the bug if a
new session is started in addition to the original "unbuggy" one.  


The bug was originally reported to Novell:
https://bugzilla.novell.com/show_bug.cgi?id=555657


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