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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 - rendering corruption (horizontal banding) when not on battery power"
href="https://bugs.freedesktop.org/show_bug.cgi?id=94011">94011</a>
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<th>Summary</th>
<td>rendering corruption (horizontal banding) when not on battery power
</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>
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<th>OS</th>
<td>All
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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
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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>giuseppe.bilotta@gmail.com
</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>Running on Debian unstable, with the upgrade to xserver-xorg 2:1.18.0-3 and
xserver-xorg-video-intel 2:2.99.917+git20160127-1+b1 I'm experiencing
the weirdest rendering corruption, which mostly manifests through a
horizontal banding of the display. Snapshots of the correct and glitched
display can be found at these imgur links:
<a href="http://i.imgur.com/V9V8s8h.png">http://i.imgur.com/V9V8s8h.png</a>
<a href="http://i.imgur.com/NhNq9OF.png">http://i.imgur.com/NhNq9OF.png</a>
The issue doesn't normally manifest in my setup and with the applications
I use, with the only exception of Opera 12, which manifests it quite
consistently. Previous versions of the graphics stack on Debian (particularly
xserver-xorg-video-intel 2:2.99.917-2 from testing, on pre-1.18
Xorg) work fine.
Most interesting, the glitch only manifests when running on AC. If the
laptop is on battery, there are no issues.
(Reported as Debian bug #813625:
<a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=813625">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=813625</a>, which include Xorg
and dmesg snippet. Shall I attach them to this report as well? Hardware is the
IGP of an Intel(R) Core(TM) i7-4712HQ CPU @ 2.30GHz)</pre>
</div>
</p>
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