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[Bug 1495696] Re: NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [firefox:2278]


I suffered from these messages after upgrading to Kubuntu 16.04.

After changing my hard drive, then my entire PC, then upgrading the
kernel to 4.5.2 and also my nVidia drivers to 364.19, the messages went

However, I STILL saw intermittent lockups.  These finally went away
after I turned off KDE's file indexing (baloo-file-indexer).  I suspect
that my original NMI problems could have also stemmed from that.

I've latched onto bug #1548051 for the file-indexing problem.

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  NMI watchdog: BUG: soft lockup - CPU#2 stuck for 22s! [firefox:2278]

Status in linux package in Ubuntu:

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
   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
  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.

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