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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Reproducible GPU lockup CP stall in Amnesia game"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=60347">60347</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Reproducible GPU lockup CP stall in Amnesia game
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>anonymous@dodgeit.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/Gallium/r600
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>There is/are a reproducible GPU lockup in Amnesia: Dark Descent video game on
Linux x86-64. Often it occurs when looking at certain doors in the levels. I
find that using VT-switch helps to recover the GPU in a reasonable timeframe to
a somewhat usable state. I do experience some jerkiness though after the stall
recovery.

Radeon 6750M

3.8.0-rc5
Everything else taken from xorg-edgers ppa

I'm happy to investigate this issue further.

[ 9902.661056] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[ 9902.661059] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000049060)
[ 9902.661062] radeon 0000:01:00.0: failed to get a new IB (-35)
[ 9902.661063] [drm:radeon_cs_ib_chunk] *ERROR* Failed to get ib !
[ 9902.662124] radeon 0000:01:00.0: Saved 10007 dwords of commands on ring 0.
[ 9902.662127] radeon 0000:01:00.0: GPU softreset: 0x00000003
[ 9902.673782] radeon 0000:01:00.0:   GRBM_STATUS               = 0xA7732CA4
[ 9902.673784] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x7C000005
[ 9902.673786] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[ 9902.673787] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[ 9902.673789] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x04000000
[ 9902.673791] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x000C0000
[ 9902.673793] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00048402
[ 9902.673794] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x80860243
[ 9902.673796] radeon 0000:01:00.0:   GRBM_SOFT_RESET=0x00007F6B
[ 9902.673848] radeon 0000:01:00.0:   GRBM_STATUS               = 0x00003828
[ 9902.673850] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x00000007
[ 9902.673851] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[ 9902.673853] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[ 9902.673855] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[ 9902.673857] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00000000
[ 9902.673858] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00000000
[ 9902.673860] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x00000000
[ 9902.691442] radeon 0000:01:00.0: GPU reset succeeded, trying to resume
[ 9902.709761] [drm] probing gen 2 caps for device 8086:101 = 2/0
[ 9902.709765] [drm] PCIE gen 2 link speeds already enabled
[ 9902.711799] [drm] PCIE GART of 512M enabled (table at 0x0000000000040000).
[ 9902.711901] radeon 0000:01:00.0: WB enabled
[ 9902.711904] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr
0x0000000040000c00 and cpu addr 0xffff880451db8c00
[ 9902.711905] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr
0x0000000040000c0c and cpu addr 0xffff880451db8c0c
[ 9902.728078] [drm] ring test on 0 succeeded in 3 usecs
[ 9902.728142] [drm] ring test on 3 succeeded in 1 usecs
[ 9902.777649] [drm] ib test on ring 0 succeeded in 0 usecs
[ 9902.777738] [drm] ib test on ring 3 succeeded in 1 usecs
[ 9914.739076] [drm] Forcing lvds to dual link mode on Apple MacBook Pro (Core
i5/i7 Series)</pre>
        </div>
      </p>
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