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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 --- - Unreal Engine Effects Cave demo lockup HD 7970M"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=82019">82019</a>
          </td>
        </tr>

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

        <tr>
          <th>Summary</th>
          <td>Unreal Engine Effects Cave demo lockup HD 7970M
          </td>
        </tr>

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

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

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>haagch@frickel.club
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </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/radeonsi
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=103826" name="attach_103826" title="full dmesg with lockup">attachment 103826</a> <a href="attachment.cgi?id=103826&action=edit" title="full dmesg with lockup">[details]</a></span>
full dmesg with lockup

On my ivy bridge/HD 7970M hybrid laptop, started with

DRI_PRIME=1 GALLIUM_HUD="fps,VRAM-usage+GTT-usage" ./Effects
so no hyperz.

mesa git with f4b0ab7afd83c811329211eae8167c9bf238870c reverted because of <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - TGSI constant buffer overrun causes assertion failure"
   href="show_bug.cgi?id=81834">bug
81834</a> and with 0001-glsl-support-unsigned-increment-in-ir_loop.patch from
<a class="bz_bug_link 
          bz_status_ASSIGNED "
   title="ASSIGNED --- - Unreal Engine 4 demos fail GLSL compiler assertion"
   href="show_bug.cgi?id=80880#c10">https://bugs.freedesktop.org/show_bug.cgi?id=80880#c10</a>

On reddit someone with a HD 7790 said it works
(<a href="http://www.reddit.com/r/linux_gaming/comments/2cbspp/unreal_engine_4_starts_working_on_the_radeonsi/cjdzh2v">http://www.reddit.com/r/linux_gaming/comments/2cbspp/unreal_engine_4_starts_working_on_the_radeonsi/cjdzh2v</a>)

For me with my HD 7970M it produces this hang on both 3.16-rc7 and
agd5f/drm-next-3.17-rebased-on-fixes:

ring 3 stalled for more than 10296msec
GPU lockup (waiting for 0x0000000000000cdc last fence id 0x0000000000000cdb on
ring 3)
scheduling IB failed (-35).
Saved 525 dwords of commands on ring 0.
GPU softreset: 0x0000004D
  GRBM_STATUS               = 0xE7DE5028
  GRBM_STATUS_SE0           = 0xEF800002
  GRBM_STATUS_SE1           = 0xEFC00002
  SRBM_STATUS               = 0x200000C0
  SRBM_STATUS2              = 0x00000000
  R_008674_CP_STALLED_STAT1 = 0x00000000
  R_008678_CP_STALLED_STAT2 = 0x00010800
  R_00867C_CP_BUSY_STAT     = 0x00408006
  R_008680_CP_STAT          = 0x84038647
  R_00D034_DMA_STATUS_REG   = 0x45483106
  R_00D834_DMA_STATUS_REG   = 0x44C83D57
  VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x00000000
  VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x00000000
GRBM_SOFT_RESET=0x0000DDFF
SRBM_SOFT_RESET=0x00100100
  GRBM_STATUS               = 0x00003028
  GRBM_STATUS_SE0           = 0x00000006
  GRBM_STATUS_SE1           = 0x00000006
  SRBM_STATUS               = 0x200000C0
  SRBM_STATUS2              = 0x00000000
  R_008674_CP_STALLED_STAT1 = 0x00000000
  R_008678_CP_STALLED_STAT2 = 0x00000000
  R_00867C_CP_BUSY_STAT     = 0x00000000
  R_008680_CP_STAT          = 0x00000000
  R_00D034_DMA_STATUS_REG   = 0x44C83D57
  R_00D834_DMA_STATUS_REG   = 0x44C83D57
GPU reset succeeded, trying to resume</pre>
        </div>
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