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<base href="https://bugs.freedesktop.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SKL] System hang in GfxBench CarChase"
href="https://bugs.freedesktop.org/show_bug.cgi?id=111453">111453</a>
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<th>Summary</th>
<td>[SKL] System hang in GfxBench CarChase
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>critical
</td>
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<th>Priority</th>
<td>medium
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>eero.t.tamminen@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Setup:
- SKL i5 6600K
- Ubuntu 18.04 + updates
- Unity desktop
- drm-tip git kernel (889140938c)
- Rest of the gfxstack build from July 8th git commits:
- libdrm: 331e51e32f
- Mesa: 9c7adaeb5f
- X server: fabc421962
- GfxBench v5 (I assume v4 would work as well)
- FullHD monitor
Test-case:
- Run GfxBench CarChase onscreen test in fullscreen:
testfw_app --gfx glfw --gl_api desktop_core --width 1920 --height 1080
--fullscreen 1 --test_id gl_4
- Repeat 10x times
Expected outcome:
- No problems, like is the case with SKL GT4e, KBL GT3e and BXT
Actual outcome:
- Whole system hangs with CarChase rendering frozen on screen
This started to happen between following drm-tip commits:
* 2019-08-18 12:57:21 e64af2bda2: drm-tip: 2019y-08m-18d-12h-56m-37s UTC
integration manifest
* 2019-08-19 16:56:48 c3ddf4084e: drm-tip: 2019y-08m-19d-16h-56m-05s UTC
integration manifest
For some reason it doesn't happen (at least within 20x repeats) when using this
week's libdrm / Mesa / X server, only with the listed earlier versions of them.
Regardless of user space versions, kernel shouldn't allow whole system to hang
(network, console etc).</pre>
</div>
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