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    <head>
      <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 CP stall for more than 10000msec"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=70497">70497</a>
          </td>
        </tr>

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

        <tr>
          <th>Summary</th>
          <td>GPU lockup CP stall for more than 10000msec
          </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>brunojimen@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>git
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Drivers/DRI/Radeon
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Hi,

I think I have found a bug in the radeon driver: after a random time using my
PC the screen turns to black and then I'm thrown back to the login screen, and
after I log in this happens again after a few moments.

Looking in my journals, I have found this at, more or less, the moment of the
problem:

kernel: radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
kernel: radeon 0000:01:00.0: GPU lockup (waiting for 0x000000000000954e last
fence id 0x000000000000954d)
systemd-coredump[1999]: Process 240 (Xorg) dumped core.

Currently I am using Arch Linux with its mesa-git repo (everything upgraded).
My card is an AMD Radeon HD 5470.

This started happening after I change to the mesa-git repo, but not from the
begining of using it.

If there's anything I can do to help, just ask.

Thanks in advance!</pre>
        </div>
      </p>
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