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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [BSW] GPU hangs after S3 + S4"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=89600">89600</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[BSW] GPU hangs after 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>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>DRM/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <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=114360" name="attach_114360" title="dmesg log">attachment 114360</a> <a href="attachment.cgi?id=114360&action=edit" title="dmesg log">[details]</a></span>
dmesg log

==System Environment==
--------------------------
Only eDP without external monitor.
BIOS: V59 
Regression: Not sure. Hard to test previous version because of <a class="bz_bug_link 
          bz_status_VERIFIED  bz_closed"
   title="VERIFIED DUPLICATE - [BSW Bisected] System will hang after suspend/resume for several times."
   href="show_bug.cgi?id=89005">bug 89005</a>

Non-working platforms: BSW

==kernel==
--------------------------
-testing: drm-intel-testing-2015-03-13 (fails)

==Bug detailed description==
-----------------------------
I tried S3 and then S4, and dmesg showed GPU hang

==Reproduce steps==
---------------------------- 
1. Boot
2. echo mem > /sys/power/state and resume
3. echo disk> /sys/power/state and resume
4. dmesg shows:
[  289.878592] [drm] stuck on render ring
[  289.899951] [drm] GPU HANG: ecode 8:0:0xfffffffe, reason: Ring hung, action:
reset
[  289.899959] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[  289.899962] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[  289.899965] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[  289.899968] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.
[  289.899972] [drm] GPU crash dump saved to /sys/class/drm/card0/error</pre>
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