i can't see the problem is xserver-xorg-video-nouveau 1.0.11-1 though, as the package hasn't been updated in 8 months and i've only had the problem the last few weeks.
i assume its one of the libdrm* userspace packages which seem to have had 3-4 new versions during march/april -- 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/1291574 Title: nouveau DRM GPU lockup, PFIFO unhandled status 0x00800000 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1291574/+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