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<base href="https://bugs.freedesktop.org/" />
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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 --- - [HSW mobile] resume from s4 sporadically causes call trace and machine is reachable"
href="https://bugs.freedesktop.org/show_bug.cgi?id=66301">66301</a>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW mobile] resume from s4 sporadically causes call trace and machine is reachable
</td>
</tr>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
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<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Reporter</th>
<td>yangweix.shui@intel.com
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=81617" name="attach_81617" title="dmesg: S4 cause call trace sporadically">attachment 81617</a> <a href="attachment.cgi?id=81617&action=edit" title="dmesg: S4 cause call trace sporadically">[details]</a></span>
dmesg: S4 cause call trace sporadically
Environment:
-------------------------
Acer Haswell Notebook Aspire V3 772G 17.3 ;
Host bridge ID=0x0c04 (rev 06);
VGA ID=0x0416 (rev06);
CPU: i7-4702MQ 2.2GHz;
BIOS:v1.04 MEM: 4G ;
Kernel: (drm-intel-next-queued)9199918a1e148c18e3519cb7b2d90a127d7ea87b
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Thu Jun 27 17:52:15 2013 +0200
drm/i915: fix hpd interrupt register locking
Description:
-------------------------
Running S4 on HSW mobile acer product will cause call trace sporadically, It
will reproduced about loop running S4 3 times. The machine is reachable. Remove
i915, S4 works well. I also test another MSI HSW mobile product, S4 is good.
I list the MSI machine info below:
--------
MSI Haswell Notebook MSI MS-16GC Notebook 15.6;
Host bridge ID=0x0c04 (rev 06);
VGA ID=0x0416 (rev06);
CPU: i7-4700MQ 2.4GHz
BIOS: E16GCIMS.509 (04/24/2013) EC: 16GCEMS1 ver5.00 (04/12/2013);
ME: 9.0.2.1345;
reproduce step:
-------------------------
1. boot up machine
2. loop running S4 about 3 times.
3. call trace will come up on screen.</pre>
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