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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
</td>
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW] suspend/resume sometimes leaves DRI crippled"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81548">81548</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>
<tr>
<th>Summary</th>
<td>[HSW] suspend/resume sometimes leaves DRI crippled
</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>
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<th>OS</th>
<td>Linux (All)
</td>
</tr>
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<th>Reporter</th>
<td>liquid.acid@gmx.net
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>XOrg CVS
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Hello,
got a new laptop system, which is still dealing with some "teething problems".
After some suspend/resume cycles the DRI support gets crippled, in the
following sense:
E.g. glxgears just displays are black screen and doesn't provide any status
output. So it's not like it is rendering something which is not shown on the
screen then. Something is blocking here. Investigating dmesg and the Xorg log
didn't provide anything useful. No GPU hang detected or anything out of the
ordinary. I'm going to check again though when it happens again.
I should be using DRI3 here. Also using PRIME (a dedicated Radeon R9 M265X)
shows the same results, no rendering.
Software stack:
xorg-server-1.16.0
mesa git tip
libdrm git tip
vanilla 3.15.6
CPU is a i7-4700HQ, which should make the GPU a hsw/gen7.5 (?)
Uploading dmesg and Xorg log later.
Any ideas how to debug this, should it happen again? I thought about just
attaching gdb to glxgears and checking where it's looping for starters.
With best wishes,
Tobias</pre>
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