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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 - Loosing external monitor output"
href="https://bugs.freedesktop.org/show_bug.cgi?id=91973">91973</a>
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<th>Summary</th>
<td>Loosing external monitor output
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
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<th>Version</th>
<td>DRI git
</td>
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<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>major
</td>
</tr>
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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>legrain@crans.org
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=118206" name="attach_118206" title="dmesg before and after / modInfo output">attachment 118206</a> <a href="attachment.cgi?id=118206&action=edit" title="dmesg before and after / modInfo output">[details]</a></span>
dmesg before and after / modInfo output
Hi !
I have video problems with my broadwell video output. With some external
projectors (plugged through mini-displayport to VGA adaptor) I have issues with
flickering and loosing external projector.
Steps to reproduce :
1/ Plug the external monitor
2/ Put some window on it
3/ Work between 5 and 1 minute
4/ Projector goes black, output seems to be lost
5/ Projector and laptop screen blink
6/ Sometimes projector never goes back, sometimes it reappears again for a
while
7/ Repeat 4/
I tried with kernel 4.2 : same issue
I tried with sna rather than uxa : same issue
I tried enable_ips=0, enable_fbc=0, enable_rc6=1 : same issue
The odd thing is that it seems to depend on the connected projector.
Machine : Dell XPS 13 2015
Distribution : Arch linux
Connector : Dell mini-displayport to VGA adapter
CPU : Intel(R) Core(TM) i5-5300U CPU @ 2.30GHz
Kernel : 4.1.6-1-ARCH #1 SMP PREEMPT Mon Aug 17 08:52:28 CEST 2015 x86_64
GNU/Linux
xf86-video-intel: 2.99.917.463.gd50d336-1 (from git)
or even with 2.99.917+381+g5772556-1 (from arch repository)</pre>
</div>
</p>
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