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      <base href="https://bugs.freedesktop.org/" />
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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 - Daily or sometimes less system will lock up with only black screen and movable cursor"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=89290">89290</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Daily or sometimes less system will lock up with only black screen and movable cursor
          </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/Intel
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>intel-gfx-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>cpollock@embarqmail.com
          </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=113775" name="attach_113775" title="Output of lshw">attachment 113775</a> <a href="attachment.cgi?id=113775&action=edit" title="Output of lshw">[details]</a></span>
Output of lshw

Adding to the above all background processes continue to run such as Fetchmail,
Procmail, SpamAssassin, ClamAV and so on. I have been able to get to a log-in
screen with CTRL>ALT>ESC and log-in and do a 'sudo reboot'. My system is Ubuntu
14.04.2 LTS on a Dell OptiPlex 780 with 4Gb ram. The kernel I'm running is
3.19.0-031900-generic #201502091451 SMP Mon Feb 9 14:52:52 UTC 2015 x86_64
x86_64 x86_64 GNU/Linux. Throughout the day I see this in my syslog, not only
when the system locks-up:

Feb 22 18:00:46 localhost kernel: [ 9088.033815]
[drm:intel_crtc_cursor_set_obj] cursor off
Feb 22 18:00:46 localhost kernel: [ 9088.033821] [drm:g4x_check_srwm] SR
watermark: display plane 92, cursor 2
Feb 22 18:00:46 localhost kernel: [ 9088.033822] [drm:g4x_check_srwm]
display watermark is too large(92/63), disabling
Feb 22 18:00:46 localhost kernel: [ 9088.033824]
[drm:intel_set_memory_cxsr] memory self-refresh is disabled
Feb 22 18:00:46 localhost kernel: [ 9088.033826] [drm:g4x_update_wm]
Setting FIFO watermarks - A: plane=40, cursor=2, B: plane=2, cursor=2,
SR: plane=0, cursor=0

I'm attaching the output of the latest dmesg output, lshw and dmidecode. If I
can provide any other information please let me know.</pre>
        </div>
      </p>
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