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      <base href="https://bugs.freedesktop.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - stuck on render ring"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=84150">84150</a>
          </td>
        </tr>

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

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

        <tr>
          <th>Summary</th>
          <td>stuck on render ring
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>diniz.bortolotto@gmail.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

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

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

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

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=106628" name="attach_106628" title="GPU crash dump">attachment 106628</a> <a href="attachment.cgi?id=106628&action=edit" title="GPU crash dump">[details]</a></span>
GPU crash dump

I was just watching a video on youtube and clicked to fullscreen.
After that the screen goes blank and I needed to restart the window
manager/XOrg with Ctrl+Alt+Backspace.

Searching the /var/log/messages I found the messages below:

kernel: [22850.471100] [drm] stuck on render ring                               
kernel: [22850.471106] [drm] GPU crash dump saved to /sys/class/drm/card0/error 
kernel: [22850.471107] [drm] GPU hangs can indicate a bug anywhere in the
entire gfx stack, including userspace.                                         
kernel: [22850.471108] [drm] Please file a _new_ bug report on
bugs.freedesktop.org against DRI -> DRM/Intel                                   
kernel: [22850.471108] [drm] drm/i915 developers can then reassign to the right
component if it's not a kernel issue.                                    
kernel: [22850.471109] [drm] The gpu crash dump is required to analyze gpu
hangs, so please always attach it.                                            
kernel: [22856.464132] [drm] stuck on render ring</pre>
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