Could this be related to this bug? https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video- nouveau/+bug/1037726
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-nouveau in Ubuntu. https://bugs.launchpad.net/bugs/1239182 Title: Crashes in nouveau CACHE_ERROR Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Bug description: Have been running Kubuntu 13.10 beta2 for 1 day now and have had 3 similar crashes that totally hang the machine. Oct 12 07:00:03 linux1 kernel: [50255.577404] nouveau E[ PFIFO][0000:01:00.0] CACHE_ERROR - ch 4 [kwin[2218]] subc 3 mthd 0x1b00 data 0x00000000 Oct 12 07:01:20 linux1 kernel: [50333.062989] nouveau E[Xorg[1486]] failed to idle channel 0xcccc0000 [Xorg[1486]] Have not had any previous problems running 13.04. Machine is an AMD64 Description: Ubuntu Saucy Salamander (development branch) Release: 13.10 Was not doing anything special, and in fact one crash happened while the machine was idle overnight. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1239182/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
