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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SNB] DP monitor randomly fails to get enabled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=74918">74918</a>
</td>
</tr>
<tr>
<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>
<tr>
<th>Summary</th>
<td>[SNB] DP monitor randomly fails to get enabled
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Reporter</th>
<td>anton@khirnov.net
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=93990" name="attach_93990" title="kernel output">attachment 93990</a> <a href="attachment.cgi?id=93990&action=edit" title="kernel output">[details]</a></span>
kernel output
Sometimes (I failed to find any specific triggers) after my DP monitor has been
in standby for a couple hours, the system will fail to wake it up. The kernel
output with drm debug on is attached.
My hardware is a SNB i7 2600K, lspci says
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core
Processor Family Integrated Graphics Controller (rev 09)
I've been occasionally seeing this problem for some time now, with several
different kernels. Right now I'm on 3.13.0, libdrm 2.4.52-1 (debian testing),
mesa 10.0.2-1 (debian experimental), xf86-video-intel 2.21.15 (debian testing).
I'm leaving the machine in this stuck state (using the second GPU), so I should
be able to get any other information that might be needed.</pre>
</div>
</p>
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