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[Bug 1495696] Re: NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [firefox:2278]
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"
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NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [firefox:2278]
Status in linux package in Ubuntu:
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.
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
Annotation: Your system might become unstablenow and might need to be restarted.
Date: Mon Sep 14 23:21:15 2015
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. GA-970A-UD3
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
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.vendor: Award Software International, Inc.
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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