It's worse in Trusty, occurring immediately on heavy graphics load and within a few minutes even in ordinary use.
The attached is the output of apport-bug xserver-xorg-video-nouveau --save (apport-collect isn't installed by default) after rebooting, and contains more instances of the warning than were normal in 13.10, but not the final error (I suspect it wasn't synced to disk). It also displayed a "send problem report?" on reboot, which I OK'd but suspect is essentially the same information. ** Attachment added: "xcrash-14_04-log.txt" https://bugs.launchpad.net/nouveau/+bug/1243557/+attachment/3944673/+files/xcrash-14_04-log.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/1243557 Title: [NVS 4200M] X freeze, "unhandled status 0x00800000" To manage notifications about this bug go to: https://bugs.launchpad.net/nouveau/+bug/1243557/+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