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    <head>
      <base href="https://bugs.freedesktop.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - The system hanged again"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=91233">91233</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>The system hanged again
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>xorg
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>x86 (IA32)
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux (All)
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Driver/nouveau
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>porton@narod.ru
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>xorg-team@lists.x.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>There was this bug with Nouveau:
<a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - Nvidia nouveau drivers hangs all gnome when opening the new legacy tray (and many other situations) in 3.16.0"
   href="show_bug.cgi?id=89842">https://bugs.freedesktop.org/show_bug.cgi?id=89842</a>

I believe this bug was fixed.

I have updated my Debian system to libdrm-nouveau2 2.4.62-1. After this the
crashes became much less frequent.

But today my Gnome session hanged again. Only mouse was moving. Keyboard and
mouse clicks became non-functional.

I pressed Alt+Ctrl+Backspace. After this I saw partially rendered buggy screen
of GDM.

I switched to a root console. There were the following errors: (Unfortunately,
I haven't recorded the very first error.)

[66411.140012] nouveau E[gnome-session-c[12401]] failed to idle channel
0xcccc0000 [gnome-session-c[12401]]
# service gpm [66400.124711] nouveau E[gnome-session-c[12401]] failed to idle
channel 0xcccc0000 [gnome-session-c[12401]]
start
[66403.128885] nouveau E[gnome-session-c[12401]] failed to idle channel
0xcccc0000 [gnome-session-c[12401]]
[66406.133056] nouveau E[gnome-session-c[12401]] failed to idle channel
0xcccc0000 [gnome-session-c[12401]]
[66408.135863] nouveau E[   PFIFO][0000:01:00.0] channel 6
[gnome-session-c[12401]] unload timeout
victor:~# [66414.144184] nouveau E[gnome-session-c[12401]] failed to idle
channel 0xcccc0000 [gnome-session-c[12401]]
[66417.148357] nouveau E[gnome-session-c[12401]] failed to idle channel
0xcccc0000 [gnome-session-c[12401]]

libdrm-nouveau2 2.4.62-1
Linux 3.10-2-amd64
X.Org X Server 1.17.1</pre>
        </div>
      </p>
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