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<th>Priority</th>
<td>medium
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Intermittent flickering on KMS, constant flickering on X11"
href="https://bugs.freedesktop.org/show_bug.cgi?id=79386">79386</a>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>Intermittent flickering on KMS, constant flickering on X11
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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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>narthana.epa+freedesktop@gmail.com
</td>
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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>XOrg 6.7.0
</td>
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<th>Component</th>
<td>DRM/Intel
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<th>Product</th>
<td>DRI
</td>
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<p>
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<pre>The laptop's display will flicker intermittently when booted with KMS enabled.
It will flicker constantly in X11 (see the attached videos). The hardware is an
Acer Aspire TimelineU M5-581TG-6666, with a Intel Core i5 3317U. It also has a
nVidia 640M, but this happens whether bumblebee is enabled or not.
It is possible that this issue is the same as <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [NV96] Artifacts in output of fragment program containing not unrolled loops with conditional break"
href="show_bug.cgi?id=78161">Bug 78161</a> because it appears to
have been caused by the same commit:
<a href="http://cgit.freedesktop.org/drm-intel/commit/?h=drm-intel-next&id=3600836585e3fdef0a1410d63fe5ce4015007aac">http://cgit.freedesktop.org/drm-intel/commit/?h=drm-intel-next&id=3600836585e3fdef0a1410d63fe5ce4015007aac</a>
whereas
<a href="http://cgit.freedesktop.org/drm-intel/commit/?h=drm-intel-next&id=4e53c2e010e531b4a014692199e978482d471c7e">http://cgit.freedesktop.org/drm-intel/commit/?h=drm-intel-next&id=4e53c2e010e531b4a014692199e978482d471c7e</a>
is good.
However, the video of the flickering looks different and it is claimed that the
lastest nightlies fix <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [hsw edp regression (see comment #21)]: constant screen flickering after KMS which correlates with CPU load"
href="show_bug.cgi?id=78162">Bug 78162</a>, but this is not the case with this issue.</pre>
</div>
</p>
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