[Nouveau] [Bug 91233] New: The system hanged again

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=91233

            Bug ID: 91233
           Summary: The system hanged again
           Product: xorg
           Version: unspecified
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: porton at narod.ru
        QA Contact: xorg-team at lists.x.org

There was this bug with Nouveau:
https://bugs.freedesktop.org/show_bug.cgi?id=89842

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

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