[Bug 71923] New: Screen corruption when watching VDPAU-accelerated H264 video

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=71923

          Priority: medium
            Bug ID: 71923
          Assignee: dri-devel@lists.freedesktop.org
           Summary: Screen corruption when watching VDPAU-accelerated H264
                    video
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: kaszak696@gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 9.2
         Component: Drivers/Gallium/r600
           Product: Mesa

Created attachment 89641
  --> https://bugs.freedesktop.org/attachment.cgi?id=89641&action=edit
Dmesg log with the described errors

Hi, i have a trouble watching some H264 videos when using VDPAU acceleration.
What happens is the screen gets completly corrupted (gray bars cover the whole
screen) when player plays a certain frame in the video. It always happens at
the same point of the video, for some videos it doesn't happen at all. I
managed to blindly save smesg output to a file when this happened, and it's
filled with these kinds of messages: 

[   47.595028] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[   48.303022] Forbidden register 0x0020 in cs at 9
[   48.303029] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[   56.146022] Forbidden register 0x0024 in cs at 9
[   56.146029] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[   57.148021] Forbidden register 0x0028 in cs at 9
[   57.148028] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !
[   57.523022] Forbidden register 0x0024 in cs at 9
[   57.523030] [drm:radeon_cs_ib_chunk] *ERROR* Invalid command stream !

I'm using Arch Linux with 3.12.1-ck at the moment, but it also happened on
3.11-ck and 3.11 vanilla.

lspci reports this card name, it's a Radeon 4570:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
RV710/M92 [Mobility Radeon HD 4530/4570/545v]

I'm using the newest stable mesa 9.2.3 and xf86-video-ati 7.2.0. The issue
happens with mpv and mplayer.

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