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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 - Random screen lockups"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=90076">90076</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Random screen lockups
          </td>
        </tr>

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

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

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

        <tr>
          <th>OS</th>
          <td>Linux (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/Radeon
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>nicolamori@aol.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=115164" name="attach_115164" title="dmesg">attachment 115164</a> <a href="attachment.cgi?id=115164&action=edit" title="dmesg">[details]</a></span>
dmesg

I experience random lockups of the screen. The screen goes black then sometimes
the image is back but frozen, sometimes it stays black. I can't do anything but
a hard reset. It happens randomly when using KDE4 desktop and common
applications (eclipse, firefox etc.). I did not notice any correlation with any
particular usage pattern or application. I have DPM enabled.
I attach the significant part of journaclt log recovered after reboot.

Hardware: Mobility Radeon HD3470 (RV620)
System: ArchLinux x86_64
Packages: linux 3.19.4  with ck patchset, xf86-video-ati 1:7.5.0, mesa 10.5.3</pre>
        </div>
      </p>
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