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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 - Intel HD 540 hangs frequently"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=94029">94029</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Intel HD 540 hangs frequently
          </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>nell@dev-nell.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=121561" name="attach_121561" title="dmesg with drm.debug=0x1e">attachment 121561</a> <a href="attachment.cgi?id=121561&action=edit" title="dmesg with drm.debug=0x1e">[details]</a></span>
dmesg with drm.debug=0x1e

The most reliable way to reproduce this for me is logging in and opening the
Unity dash. The system will appear to hang for a few seconds and then recover.
The hang happens very frequently. Sometimes it never recovers and I have to
reboot.

Tried on Linus' 4.5rc2 kernel and intel-drm-nightly from 2016-02-06 with the
same result. The default Ubuntu 16.04 kernel (4.4.0-2-generic) boots with a
black screen, so I haven't tried any earlier kernels. Attaching the dmesg and
crash dump from intel-drm-nightly.</pre>
        </div>
      </p>
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