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        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - "atombios stuck executing D1FC" when switching back from tty to X"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=70391">70391</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>dri-devel@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>"atombios stuck executing D1FC" when switching back from tty to X
          </td>
        </tr>

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

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

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>lbdkmjdf@sharklasers.com
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Other
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

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

        <tr>
          <th>Product</th>
          <td>DRI
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=87489" name="attach_87489" title="dmesg">attachment 87489</a> <a href="attachment.cgi?id=87489&action=edit" title="dmesg">[details]</a></span>
dmesg

Sometimes, I get this error message repeatedly:
[drm:atom_op_jump] *ERROR* atombios stuck in loop for more than 5secs aborting
[drm:atom_execute_table_locked] *ERROR* atombios stuck executing D1FC (len 62,
WS 0, PS 0) @ 0xD218
and the screen gets stuck. (last time it happened, the screen recovered by
itself). The keyboard won't respond, but I can't power off the machine by
pressing the power button.

attached: dmesg, Xorg logs, video BIOS dump

$ lspci -vnn | grep VGA
00:01.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] BeaverCreek [Radeon HD 6520G] [1002:9647] (prog-if 00 [VGA
controller])
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] [1002:6741] (rev
ff) (prog-if ff)
(second card was disabled through vgaswitcheroo)</pre>
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