Xorg.0.log and dmesg attached as requested. I saved them by switching to VT.
However, I don't think they have anything useful in them - nothing related to an error at the end. ** Attachment added: "dmesg" https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/994203/+attachment/3178971/+files/xorg_freeze_dmesg.txt -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/994203 Title: Xorg freeze with Nouveau drivers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/994203/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp