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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [SNB IVB HSW]S4 fails to resume sporadically"
href="https://bugs.freedesktop.org/show_bug.cgi?id=67337">67337</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>[SNB IVB HSW]S4 fails to resume sporadically
</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>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=83016" name="attach_83016" title="S4 dmesg on HSW">attachment 83016</a> <a href="attachment.cgi?id=83016&action=edit" title="S4 dmesg on HSW">[details]</a></span>
S4 dmesg on HSW
Environment:
-------------------
Kernel: (drm-intel-next-queued)3b27af3560f3cfe4e09171024515fa304ebae93b
Author: Imre Deak <<a href="mailto:imre.deak@intel.com">imre.deak@intel.com</a>>
Date: Thu Jul 25 16:22:31 2013 +0300
drm/i915: dvo_ch7xxx: fix vsync polarity setting
Description:
--------------------
S4 fails to resume less then 20 times while doing S4 cycles on -next-queued
branch. This issue happens on SNB,IVB and HSW platforms. Here I attach a dmesg
which I got from S4 cycle on HSW desktop using serial port. In this cycle, S4
fails to resume at the 2nd time. The screen is black, and it's just stuck in
there.
Reproduce step:
----------------------
1.xinit&
2.gnome-session&
2.do S4 cycle</pre>
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