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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 - [CI][SNB] *ERROR* CPU pipe B FIFO underrun"
href="https://bugs.freedesktop.org/show_bug.cgi?id=102373">102373</a>
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<th>Summary</th>
<td>[CI][SNB] *ERROR* CPU pipe B FIFO underrun
</td>
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<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>XOrg 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>
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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
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
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<th>Reporter</th>
<td>martin.peres@free.fr
</td>
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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>On Sandybridge, we see CPU pipe B FIFO underruns when running the following
tests:
- igt@kms_flip@plain-flip-ts-check-interruptible
- igt@kms_flip@dpms-vs-vblank-race
- igt@kms_cursor_crc@cursor-128x128-random
[ 73.318726] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
[ 73.318873] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR*
uncleared pch fifo underrun on pch transcoder B
[ 73.318912] [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH
transcoder B FIFO underrun
Full logs:
-
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2994/shard-snb6/igt@kms_flip@plain-flip-ts-check-interruptible.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2994/shard-snb6/igt@kms_flip@plain-flip-ts-check-interruptible.html</a>
-
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2992/shard-snb1/igt@kms_flip@dpms-vs-vblank-race.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2992/shard-snb1/igt@kms_flip@dpms-vs-vblank-race.html</a>
-
<a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2994/shard-snb5/igt@kms_cursor_crc@cursor-128x128-random.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_2994/shard-snb5/igt@kms_cursor_crc@cursor-128x128-random.html</a></pre>
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</p>
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