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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] resume from s4 sporadically causes system hang,with warm boot"
href="https://bugs.freedesktop.org/show_bug.cgi?id=78056">78056</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>[HSW] resume from s4 sporadically causes system hang,with warm boot
</td>
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<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>critical
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Reporter</th>
<td>lei.a.liu@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
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<th>Product</th>
<td>DRI
</td>
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<pre>Environment:
-------------------
Kernel: (drm-intel-next-queued)b7c0d9df97c10ec5693a838df2fd53058f8e9e96
Some additional commit info:
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
AuthorDate: Fri Apr 25 16:59:00 2014 +0200
Commit: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
CommitDate: Fri Apr 25 16:59:00 2014 +0200
drm/i915: Integrate cmd parser kerneldoc
Ville noticed that we have this nice kerneldoc but it's not integrated
anywhere. Fix this asap!
Cc: Ville Syrjälä <<a href="mailto:ville.syrjala@linux.intel.com">ville.syrjala@linux.intel.com</a>>
Cc: Brad Volkin <<a href="mailto:bradley.d.volkin@intel.com">bradley.d.volkin@intel.com</a>>
Signed-off-by: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Description:
--------------------
run S4 test in a loop. system resume with hang. This issue is probabilistic,
perhaps it will come up to your eyes for just a while S4 test or more. I remove
i915 module,then I run 20 times. It works well.
Reproduce step:
----------------------
1.boot up machine with command "reboot"(warm boot)
2.echo 0 > /sys/class/rtc/rtc0/wakealarm ;
echo +10 > /sys/class/rtc/rtc0/wakealarm;
3.echo disk > /sys/power/state
4.loop running step 2 and 3</pre>
</div>
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