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<base href="https://bugs.freedesktop.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [BSW] Unable to enter S3/S4"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88622">88622</a>
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</tr>
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<th>Summary</th>
<td>[BSW] Unable to enter S3/S4
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
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<th>Component</th>
<td>DRM/Intel
</td>
</tr>
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<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Reporter</th>
<td>jeff.zheng@intel.com
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>CC</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=112534" name="attach_112534" title="dmesg when unable suspend on C step">attachment 112534</a> <a href="attachment.cgi?id=112534&action=edit" title="dmesg when unable suspend on C step">[details]</a></span>
dmesg when unable suspend on C step
==System Environment==
--------------------------
BIOS version V53
CPU: C0 step
Regression: No. I tried with the same commit on DUT with B step CPU and does
not see this issue.
Non-working platforms: BSW with C0 CPU
==kernel==
--------------------------
-testing: 2015_01_18 commit 6dd5bb25ce0ed3a0012b69d553d74e1a0d39c313(test
fails)
==Bug detailed description==
-----------------------------
Unable to enter S3/S4 on BSW with C0 cpu. When I tried:
echo mem > /sys/power/state
Or
echo disk > /sys/power/state
It looks like the system suspend but finally system automatically resumes.
On BSW with B step cpu, system will suspend, and system will resume only when I
press the power button.
The reproducibility > 90%
==Reproduce steps==
----------------------------
1. Boot BSW, login run:
echo mem > /sys/power/state
Or
echo disk > /sys/power/state</pre>
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