Comment 28 for bug 1033533

Given the following dpkg-query output, I assume I have the new version that you mention:

$ dpkg-query --show xserver-xorg-video-nouveau
xserver-xorg-video-nouveau 1:1.0.6-0ubuntu3+spam~quantal2

The following lines appeared on the screen (intermittently, alternating between that and a screen of pixel garbage every 10-15 seconds):

[drm] nouveau 0000:01:00.0: GPU lockup - switching to software fbcon
(4 seconds pass)
[TTM] Failed to expire sync object before buffer eviction
[drm] nouveau 0000:01:00.0: fail ttm_validate
[drm] nouveau 0000:01:00.0: validate vram_list
[drm] nouveau 0000:01:00.0: validate: -12
(1.5 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 1.
(1 second passes)
[drm] nouveau 0000:01:00.0: fail ttm_validate
[drm] nouveau 0000:01:00.0: validate vram_list
[drm] nouveau 0000:01:00.0: validate: -16
(2 seconds pass)
[drm] nouveau 0000:01:00.0: PGRAPH idle timed out with status 0x09800001
(2 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 2.
[drm] nouveau 0000:01:00.0: fail ttm_validate
[drm] nouveau 0000:01:00.0: validate vram_list
[drm] nouveau 0000:01:00.0: validate: -16
(47 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 1.
(3 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 2.
(35 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 1.
(3 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 2.
(45 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 1.
(3 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 2.
(41 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 1.
(3 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 2.
(36 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 1.
(3 seconds pass)
[drm] nouveau 0000:01:00.0: Failed to idle channel 2.
...

(Errors typed manually; apologies for any typos. Time spans typed manually to avoid transcribing 230 digits.)