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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 - Freeze system"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=85069">85069</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Freeze system
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>XOrg CVS
          </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>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>freeniki@yandex.ru
          </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=107891" name="attach_107891" title="/sys/class/drm/card0/error">attachment 107891</a> <a href="attachment.cgi?id=107891&action=edit" title="/sys/class/drm/card0/error">[details]</a></span>
/sys/class/drm/card0/error

Periodic system freeze. 
OS: Ubuntu 14.04 amd64
DE: Unity
PC: Dell 3721
GPU: Intel HD4000
CPU: Intel Core i3-3217U
dmsg log:
[10303.130413] perf samples too long (2504 > 2500), lowering
kernel.perf_event_max_sample_rate to 50000
[11631.300193] [drm] stuck on render ring
[11631.300204] [drm] GPU crash dump saved to /sys/class/drm/card0/error
[11631.300206] [drm] GPU hangs can indicate a bug anywhere in the entire gfx
stack, including userspace.
[11631.300207] [drm] Please file a _new_ bug report on bugs.freedesktop.org
against DRI -> DRM/Intel
[11631.300208] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.
[11631.300209] [drm] The gpu crash dump is required to analyze gpu hangs, so
please always attach it.</pre>
        </div>
      </p>
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