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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 --- - Display keep blank after resume"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=77562">77562</a>
          </td>
        </tr>

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

        <tr>
          <th>Summary</th>
          <td>Display keep blank after resume
          </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>rdp.effort@gmail.com
          </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>XOrg CVS
          </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=97496" name="attach_97496" title="dmesg with dri.debug=4">attachment 97496</a> <a href="attachment.cgi?id=97496&action=edit" title="dmesg with dri.debug=4">[details]</a></span>
dmesg with dri.debug=4

I have a behaviour very similar to
<a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Display does not work when resuming from suspend"
   href="show_bug.cgi?id=42960">https://bugs.freedesktop.org/show_bug.cgi?id=42960</a>.

After resuming from suspend, display is blank.

I have tried the tricks suggested in #42960 (acpi_sleep=s3_bios) with no luck,
when I use that the laptop doesn't resume correctly.

With the catalyst driver the display resumes correctly. 

It's an Ubuntu 13.10 with a 3.14 kernel, DPM is activated.

Feel free to ask for tests.</pre>
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