[Bug 23732] New: small image corruptions when AccelDFS is on (even when BusType is set to PCI)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=23732

           Summary: small image corruptions when AccelDFS is on (even when
                    BusType is set to PCI)
           Product: xorg
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: phercek at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=29253)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=29253)
example of the corruption in PCI mode

See the attached images to see how they look like. Switching off AccelDFS makes
the image to be correct but then the system is not usable (too slow). The
corruptions happen not only in AGPMode 8 but also in PCI mode. Actually, it is
worse in PCI mode. The HW is working without any problems (graphics
corruptions) in windows (with the catalyst driver in AGPMode 8 even with
FastWrites on - that is provided that the catalyst control center is not
lying). If this is a HW problem (AgpBridge - VGA incompatibility) then windows
somehow manages to do GUI quickly even without AccelDFS.
The attached images show errors in Thunderbird toolbar icons. Thunderbird is
the only application where I noticed these problems. It also makes system
terribly slow when AccelDFS is off.
I used today's (2009-09-05) git versions of radeon, mesa, libdrm, and agd5f's
r6xx 3D drm.


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