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<th>Priority</th>
<td>medium
</td>
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Freezing and drm ring_stuck log errors after latest commit: Enable TearFree rendering for transformed scanouts"
href="https://bugs.freedesktop.org/show_bug.cgi?id=70764">70764</a>
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<th>Assignee</th>
<td>chris@chris-wilson.co.uk
</td>
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<th>Summary</th>
<td>Freezing and drm ring_stuck log errors after latest commit: Enable TearFree rendering for transformed scanouts
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
</td>
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<th>Reporter</th>
<td>francisbrwn9@gmail.com
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>git
</td>
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<th>Component</th>
<td>Driver/intel
</td>
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<th>Product</th>
<td>xorg
</td>
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<pre>Bisected to latest commit: d788b69fdb5ea73b1d283a89e53b2b19eaa90e6e
sna: Enable TearFree rendering for transformed scanouts
On a:
Ubuntu linux saucy
Kernel 3.11.0-12-generic (3.11.3?)
xorg 1.14.3
SNB: HD3000 mobile
with tearfree enabled by xorg.conf
have X freezing for several seconds at a time and a corresponding error in
kernel log of
[drm:ring_stuck] *ERROR* Kicking stuck semaphore on render ring
occasionally appended by
[drm] capturing error event; look for more information in
/sys/kernel/debug/dri/0/i915_error_state
[drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0x575a000 ctx
0) at 0x575aa64</pre>
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