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      <base href="https://bugs.freedesktop.org/" />
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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 - computer freezes for 15s"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=89089">89089</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>computer freezes for 15s
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>XOrg git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86-64 (AMD64)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>normal
          </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>bugs-freedesktop@joern.heissler.de
          </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=113374" name="attach_113374" title="crash dump">attachment 113374</a> <a href="attachment.cgi?id=113374&action=edit" title="crash dump">[details]</a></span>
crash dump

Hi,
a user reported:
"my desktop just did that thing again, chrome is dimmed. All other applications
that were opened froze for about 15 seconds, but are working, except chrome"
This seems to happen a few times a day.
I can see on a screenshot that chrome is now greyed out.

In the logs I found, matching the time of the incident:
[drm] stuck on render ring
[drm] GPU crash dump saved to /sys/class/drm/card0/error
[drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including
userspace.
[drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI ->
DRM/Intel
[drm] drm/i915 developers can then reassign to the right component if it's not
a kernel issue.
[drm] The gpu crash dump is required to analyze gpu hangs, so please always
attach it.

System is running Ubuntu-14.04 with 
xserver-xorg-video-intel (2:2.99.910-0ubuntu1.3).
uname is "3.13.0-44-generic #73-Ubuntu SMP Tue Dec 16 00:22:43 UTC 2014 x86_64
x86_64 x86_64 GNU/Linux"

Attached the crash dump, /proc/cpuinfo and "lspci -vvv -nn".</pre>
        </div>
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