Created attachment 94080 [details]
dmesg

Description:
After some time of normal use of Gnome Shell with nouveau driver the screen
gets frozen and I have to restart the GS from another TTY.


Additional info:
xf86-video-nouveau 1.0.10-2
xorg-server 1.15.0-5
linux 3.12.9-2
I use nVidia GeForce 8200
I'm including Xorg.0.log and outputs from dmesg, `journalctl -b` and
`journalctl --since=${time_of_freeze}`


Steps to reproduce:
This behavior seems to happen randomly.