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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [HSW]igt/gem_cs_prefetch sporadically causes *ERROR* Hangcheck timer elapsed... blitter ring idle"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88651">88651</a>
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<th>Summary</th>
<td>[HSW]igt/gem_cs_prefetch sporadically causes *ERROR* Hangcheck timer elapsed... blitter ring idle
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>medium
</td>
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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>
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<th>Reporter</th>
<td>huax.lu@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>
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<pre>Created <span class=""><a href="attachment.cgi?id=112583" name="attach_112583" title="dmesg">attachment 112583</a> <a href="attachment.cgi?id=112583&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Regression: not sure
on-working platforms: HSW
==kernel==
--------------------------
drm-intel-nightly/d6bc7a6a0a7573350e8be8ec54002c20d1dbe1e0
commit d6bc7a6a0a7573350e8be8ec54002c20d1dbe1e0
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Tue Jan 20 15:10:59 2015 +0100
drm-intel-nightly: 2015y-01m-20d-14h-10m-40s UTC integration manifest
==Bug detailed description==
-----------------------------
It sporadically causes <3>[ 77.789102] [drm:i915_hangcheck_elapsed [i915]]
*ERROR* Hangcheck timer elapsed... blitter ring idle. fail rate:1/3
igt/gem_cpu_reloc also sporadically causes this error.
output:
IGT-Version: 1.9-ga29f28e (x86_64) (Linux:
3.19.0-rc4_drm-intel-nightly_d6bc7a_20150121+ x86_64)
gem_cs_prefetch: 100%
Test suceeded, cleanup up - this might take a while.
==Reproduce steps==
----------------------------
1. ./gem_cs_prefetch</pre>
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