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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 - [KBL] hangcheck /reset fails, keeps GPU at max"
href="https://bugs.freedesktop.org/show_bug.cgi?id=98748">98748</a>
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<th>Summary</th>
<td>[KBL] hangcheck /reset fails, keeps GPU at max
</td>
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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>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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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
</td>
</tr>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>i915 platform</th>
<td>KBL
</td>
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<th>i915 features</th>
<td>GPU hang
</td>
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<div>
<pre>Created <span class=""><a href="attachment.cgi?id=128014" name="attach_128014" title="Dmesg">attachment 128014</a> <a href="attachment.cgi?id=128014&action=edit" title="Dmesg">[details]</a></span>
Dmesg
Test setup:
- KBL-U QL9J (haven't seen this yet on other platforms)
- Fairly up to date Ubuntu 16.04 with DRI3 & Unity desktop
- Latest kernel and rest of 3D stack within a few weeks
kernel git://anongit.freedesktop.org/drm-intel at
04145fe15cf8c81c221e62fc9d65d93053f9bd1a 2016-11-15_14-49-57
Test-case:
- Boot
- Run Unigine, GLBenchmark 2.7, GfxBench 4.0, SynMark 7.0 benchmarks several
times
Expected outcome:
- Everything works fine
Actual outcome:
- After SynMark CSDof (spilling compute shader test), rest of tests fail to:
intel_do_flush_locked failed: Input/output error
- After 3D tests have been stopped and few minutes have been waited, device
idle power usage is still very high (3x normal)
Logs show that when device is idling afterwards:
- Package & cores are in lower power states as expected
- GPU frequency is still at max (allowed by TDP), with 0% in RC6*
- compiz is 100% in (GPU?) IOWAIT
- Unlike in normal situations, powertop shows:
-------------------
Usage;Wakeups/s;GPU ops/s;Disk IO/s;GFX Wakeups/s;Category;Description
77,9 ms/s;;;;;kWork;i915_hangcheck_elapsed
-------------------
Same issue happens with yesterday night version of X server, Intel DDX, Mesa
(which should fix one issue with spilling) and few week older versions of them.
Dmesg attached. Earlier GEN <a class="bz_bug_link
bz_status_CLOSED bz_closed"
title="CLOSED WONTFIX - [BSW] GPU reset fails after GPU HANG: *ERROR* Failed to reset chip: -5"
href="show_bug.cgi?id=92774">bug 92774</a> seems to have had similar issue.</pre>
</div>
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