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[Halcyon <632315@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Binary package hint: xserver-xorg-video-nouveau

When I log out of gnome the computer freezes and I have to press the restart button.
This does not happen on every log out, only in some instances.. lets say 1 in 5 times.

I believe that it is the nouveau driver beacause of the log entries:

Sep  7 09:28:40 home bonobo-activation-server (halcyon-12127): could not associate with desktop session: Failed to connect to socket /tmp/dbus-RIIIWc4OgX: Connection refused
Sep  7 09:28:40 home kernel: [15596.290533] [drm] nouveau 0000:01:00.0: nouveau_channel_free: freeing fifo 1
Sep  7 09:28:40 home kernel: [15596.293546] [drm] nouveau 0000:01:00.0: PFIFO_DMA_PUSHER - Ch 31
Sep  7 09:28:40 home kernel: [15596.293549] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31
Sep  7 09:28:40 home kernel: [15596.296131] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31
Sep  7 09:28:40 home kernel: [15596.296135] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31
....
.. lot more entries of same type - cropped for clarity
....
Sep  7 09:28:40 home kernel: [15596.296135] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31
Sep  7 09:28:40 home kernel: [15596.296135] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31
Sep  7 09:28:40 home kernel: [15596.296457] [drm] nouveau 0000:01:00.0: PFIFO_INTR 0x00010000 - Ch 31
Sep  7 09:28:40 home kernel: [15596.296459] [drm] nouveau 0000:01:00.0: PFIFO still angry after 101 spins, halt
Sep  7 09:28:41 home kernel: [15597.642207] [drm] nouveau 0000:01:00.0: Allocating FIFO number 1
Sep  7 09:28:41 home kernel: [15597.642754] [drm] nouveau 0000:01:00.0: nouveau_channel_alloc: initialised FIFO 1
Sep  7 09:30:40 home kernel: imklog 4.2.0, log source = /proc/kmsg started.

** Affects: xserver-xorg-video-nouveau (Ubuntu)
     Importance: Undecided
         Status: New

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Computer freezes when loging out of gnome
https://bugs.launchpad.net/bugs/632315
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