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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 --- - GPU Lockup on AMD RS880 HD4200"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=70035">70035</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>xorg-driver-ati@lists.x.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>GPU Lockup on AMD RS880 HD4200
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

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

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

        <tr>
          <th>Reporter</th>
          <td>tasev.stefanoska@skynet.be
          </td>
        </tr>

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

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

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

        <tr>
          <th>Component</th>
          <td>Driver/Radeon
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=86962" name="attach_86962" title="dmesg_3.12-rc3.txt">attachment 86962</a> <a href="attachment.cgi?id=86962&action=edit" title="dmesg_3.12-rc3.txt">[details]</a></span>
dmesg_3.12-rc3.txt

Hello devs,

I use the Oibaf Updated and Optimized Open Graphics Drivers PPA on Ubuntu
Precise
with kernel 3.11 an 3.12-rc3.
After the update this monday my system is not usable anymore.
I made a new update today with no changes.
The system boot normaly to the kde desktop an then stop immediately to respond.
With luck, sometimes i can switch to console ctrl-alt-F1.
The dmesg output from the console is attached.
I try with and without radeon.dpm=1 , it doesn't make difference.
The GPU lockup every 10 seconds</pre>
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