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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 - GPU hang while using X on Sandy Bridge notebook"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=93033">93033</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU hang while using X on Sandy Bridge notebook
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>XOrg git
          </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>rbrito@ime.usp.br
          </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=119967" name="attach_119967" title="dmesg output with the message of a kernel hang">attachment 119967</a> <a href="attachment.cgi?id=119967&action=edit" title="dmesg output with the message of a kernel hang">[details]</a></span>
dmesg output with the message of a kernel hang

Hi.

I have recently (say, since upgrading to kernel 4.2, but not really sure of the
exact period) having some GPU hangs with my Sandy Bridge notebook while using X
and, during these events, all the user interface elements become frozen for a
few moments.

In one occasion, I even had my entire X session killed and I was back to the
Linux console.

I *believe* (but can't say with 100% confidence) that it happens when I play
videos on Youtube with Debian's Iceweasel.  I don't believe that I have
experienced one of these hangs with "regular" video players like mpv, mplayer
or vlc, but my memory is really weak these years.

I am attaching some information and, if needed, I can try to provide anything
else that you ask me to.

Output of uname -a:

* Linux zatz 4.2.0-1-amd64 #1 SMP Debian 4.2.6-1 (2015-11-10) x86_64 GNU/Linux

Distribution:

* Debian testing.

Machine:

* It's (I believe) a rebranded Clevo notebook with a Core i5-2410M and no other
video card.

I have a GPU crash dump that I'm attaching here. I will try to boot with
special options listed on
<a href="https://01.org/linuxgraphics/documentation/how-report-bugs">https://01.org/linuxgraphics/documentation/how-report-bugs</a>, but I don't know if
I will be able to reproduce this problem reliably.


Once again, if there is anything else that I can provide, please just ask.


Thanks,

RogĂ©rio Brito.</pre>
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