Sad news: I had the same crash with the 3.19.8 kernel a couple of times now. The obvious symptom is that the screen turns off and searches for a new signal source (HDMI/VGA/etc.). This time it happened when zooming in Firefox (CTRL+Mousewheel) while a Youtube video was loading in a background tab. I have tried to connect via SSH from a different machine to see if only the screen/GPU is not working correctly but it didn't go beyond login which indicates that some kind of lockup occurs.
I have attached the latest logfile from /var/crash/ Sorry for sparse/superficial information but my experience with kernel- debugging is rather limited... ** Attachment added: "linux-image-3.19.8-031908ckt6-generic.225683.crash" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1495696/+attachment/4471604/+files/linux-image-3.19.8-031908ckt6-generic.225683.crash -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1495696 Title: NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [firefox:2278] Status in linux package in Ubuntu: Triaged Bug description: Full freeze, screen turns off, happened when Youtube video running in background tab in Firefox. Hard reset necessary. Multiple crashes/freezes have occurred updating linux kernel/image from 3.19.0-28 to 3.19.0-29. All of them have happened when Firefox was running playing html5 videos. ProblemType: KernelOops DistroRelease: Ubuntu 15.04 Package: linux-image-3.19.0-29-generic 3.19.0-29.31 ProcVersionSignature: Ubuntu 3.19.0-29.31-generic 3.19.8-ckt6 Uname: Linux 3.19.0-29-generic x86_64 NonfreeKernelModules: nvidia Annotation: Your system might become unstablenow and might need to be restarted. ApportVersion: 2.17.2-0ubuntu1.4 Architecture: amd64 Date: Mon Sep 14 23:21:15 2015 Failure: oops HibernationDevice: RESUME=UUID=e82835fd-236c-4458-b8eb-2815c0d14261 IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. GA-970A-UD3 ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-29-generic root=UUID=ebf725f8-53e7-43f5-a8c8-04a43ef1a5d9 ro quiet splash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: kerneloops-daemon 0.12+git20090217-3ubuntu8 RfKill: SourcePackage: linux Title: NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [firefox:2278] UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/20/2012 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F8a dmi.board.name: GA-970A-UD3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF8a:bd12/20/2012:svnGigabyteTechnologyCo.,Ltd.:pnGA-970A-UD3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-970A-UD3:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: GA-970A-UD3 dmi.sys.vendor: Gigabyte Technology Co., Ltd. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1495696/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
