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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>high
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [HSW desktop regression]Resume from s4 causes call trace and system hang"
href="https://bugs.freedesktop.org/show_bug.cgi?id=63586">63586</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[HSW desktop regression]Resume from s4 causes call trace and system hang
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>cancan.feng@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>
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<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=78055" name="attach_78055" title="dmesg by netconsole">attachment 78055</a> <a href="attachment.cgi?id=78055&action=edit" title="dmesg by netconsole">[details]</a></span>
dmesg by netconsole
Environment:
-------------------
Kernel: (drm-intel-next-queued)d41ca032afdb4e12a9782df523c8798cd42aaaa3
Some additional commit info:
Author: Daniel Vetter <<a href="mailto:daniel.vetter@ffwll.ch">daniel.vetter@ffwll.ch</a>>
Date: Thu Apr 11 19:49:07 2013 +0200
drm/i915: move debug output back to the right place
Description:
--------------------
When I do s4 on Haswell desktop, I found the machine can suspend successfully,
but resume with call trace and system hang. I attached the dmesg info in the
attachment. I couldn't fetch the call trace info, so I took a picture and
attached it in the attachment.
If I remove i915, then do s4, the machine can suspend successfully, but just
auto resume from s4 without call trace or system hang. By the way, problem of
auto resume always exist.
Reproduce step:
----------------------
1.boot or reboot
2.echo disk > /sys/power/state
3.resume</pre>
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