[Bug 38022] New: ATI Radeon 6950 (Cayman): r600g texture / pixmap corruption

[bugzilla-daemon@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=38022

           Summary: ATI Radeon 6950 (Cayman): r600g texture / pixmap
                    corruption
           Product: DRI
           Version: XOrg CVS
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: h.judt@gmx.at


Created an attachment (id=47642)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=47642)
Xorg.0.log

I don't know where this should go (drm, mesa?), but after a while, I notice
corruption of textures / pixmaps. It can be reproduced quite easily by opening
a few applications, or starting another X session. In particular, I could
determine the following:
 - Corrupted areas resemble parts of the previous visible login screen
 - Icons, fonts and widgets like vertical gtk progressbars get corrupted, but
only their lower half
 - Window (emerald) decoration seem to get corrupted completely.
 - It's not related to color tiling.
 - Pageflipping is enabled.
 - Restarting a corrupted application fixes it temporarily, while minimizing
etc. doesn't. Restarting compiz doesn't fix it either.

I believe this is specific to cayman, as the issue does not occur on a thinkpad
t400 with ATI Mobility Radeon HD 3400 and similar configuration.

Software configuration:
 - linux-3.0.0-rc1 with latest fixes from drm-2.6 git applied, up to
2a9e5862a38f7195931bd51788dc9ce68b28120c.
 - r600g from git mesa compiled on 12:44:56 03.06.2011
 - xorg-server 1.10.2
 - libdrm git 21:06:43 02.06.2011
 - xf86-video-ati git 21:56:58 02.06.2011

lspci:
01:00.0 VGA compatible controller: ATI Technologies Inc Device 6719 (prog-if 00
[VGA controller])
        Subsystem: ATI Technologies Inc Device 0b00
        Flags: bus master, fast devsel, latency 0, IRQ 54
        Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Memory at fe620000 (64-bit, non-prefetchable) [size=128K]
        I/O ports at e000 [size=256]
        Expansion ROM at fe600000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
        Capabilities: [150] Advanced Error Reporting
        Kernel driver in use: radeon
--

Apart from this, it works great, no crashes so far!

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