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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [SNB]igt/kms_setmode/clone-single-crtc cause dmesg warn"
href="https://bugs.freedesktop.org/show_bug.cgi?id=89492">89492</a>
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<th>Summary</th>
<td>[SNB]igt/kms_setmode/clone-single-crtc cause dmesg warn
</td>
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<th>Product</th>
<td>DRI
</td>
</tr>
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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>
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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>
</tr>
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<th>Reporter</th>
<td>hengx.ding@intel.com
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=114140" name="attach_114140" title="dmesg">attachment 114140</a> <a href="attachment.cgi?id=114140&action=edit" title="dmesg">[details]</a></span>
dmesg
==System Environment==
--------------------------
Non-working platforms: SNB
Regression :No, this issue always exist.
==kernel==
--------------------------
origin/drm-intel-nightly: c2f6e584b215dd0d7e5a8a02716a89e985366ec0(2015-03-08)
==Bug detailed description==
-----------------------------
igt/kms_setmode/clone-single-crtc will cause dmesg warn
root@x-sgb3:/GFX/Test/Intel_gpu_tools/intel-gpu-tools/tests# dmesg -r |grep
drm|grep '<[1-4]>'
<3>[ 73.506848] [drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
<3>[ 78.546967] [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR*
uncleared pch fifo underrun on pch transcoder B
<3>[ 78.693750] [drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
==Reproduce steps==
----------------------------
1. ./kms_setmode --run-subtest clone-single-crtc</pre>
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