This sounds like another nouveau crash. Please run these commands and paste the output in this bug...
lspci -k
xrandr
Please also attach a copy of: /var/log/Xorg.0.log
This sounds like another nouveau crash. Please run these commands and paste the output in this bug...
lspci -k
xrandr
Please also attach a copy of: /var/log/Xorg.0.log