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      <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 --- - [NV50] errors with DMA PUSHER and idle channel"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=79532">79532</a>
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>nouveau@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[NV50] errors with DMA PUSHER and idle channel
          </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>mattia.b89@gmail.com
          </td>
        </tr>

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

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=100275" name="attach_100275" title="log from dmesg">attachment 100275</a> <a href="attachment.cgi?id=100275&action=edit" title="log from dmesg">[details]</a></span>
log from dmesg

apparently starting with mesa-10.2rc4 with my 9800gt PCI-E on gnome-3.12.2

I get this errors:
[ 1340.694566] nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch 2 [Xorg[630]]
get 0x0020023700 put 0x0020023710 ib_get 0x000002da ib_put 0x0000032f state
0x80000240 (err: INVALID_CMD) push 0x00406040
[ 2965.025771] nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch 2 [Xorg[630]]
get 0x002003a9a8 put 0x002003aa98 ib_get 0x00000132 ib_put 0x00000183 state
0x80004610 (err: INVALID_CMD) push 0x00406040
[ 2996.725428] nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch 2 [Xorg[630]]
get 0x002003e150 put 0x002003e27c ib_get 0x00000080 ib_put 0x000000d7 state
0x80000024 (err: INVALID_CMD) push 0x00406040
[ 3042.646374] nouveau E[Xorg[630]] failed to idle channel 0xcccc0000
[Xorg[630]]
[ 3057.646368] nouveau E[Xorg[630]] failed to idle channel 0xcccc0000
[Xorg[630]]

then the session "reboot" to GDM (gnome login manager)


I attach the entire dmesg log</pre>
        </div>
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