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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 ULT] Loop to test S4, system will call trace and network disconnect"
href="https://bugs.freedesktop.org/show_bug.cgi?id=71238">71238</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 ULT] Loop to test S4, system will call trace and network disconnect
</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>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>qingshuai.tian@intel.com
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</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=88658" name="attach_88658" title="Image of Call trace">attachment 88658</a> <a href="attachment.cgi?id=88658&action=edit" title="Image of Call trace">[details]</a></span>
Image of Call trace
Environment:
-------------------
Kernel: (drm-intel-next-queued)9d1cb9147dbe45f6e94dc796518ecf67cb64b359
Author: Paulo Zanoni <<a href="mailto:paulo.r.zanoni@intel.com">paulo.r.zanoni@intel.com</a>>
Date: Fri Nov 1 13:32:08 2013 -0200
drm/i915: avoid unclaimed registers when capturing the error state
Description:
--------------------
When I test s4 in a loop , the machine will resume with call trace and the
network disconnect, and sometimes it will also hang at the same time. It may
happen at the 5 or 6 round of the loop ,or more like 24 round . I add the
picture of the call trace in the attachment.
Reproduce step:
----------------------
1.boot up machine
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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