Happened right after a YouTube video of music finished. mouse and keyboard locked up but system monitor applet kept running showing full usage of all four cpu cores. tried to log on remotely but this was very slow. used htop to see what was using cpu but it showed only three cores active with boinc work units as usual conflicting with the system monitor applet. eventually htop stopped working. could not find excess cpu usage with top either. eventually the system monitor applet showed only 50% cpu usage with lots of io waiting. eventually did soft reset. cpu is overclocked but has run stable with heavy boinc usage for weeks.
ProblemType: KernelOops
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-45-generic 3.16.0-45.60~14.04.1
ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14
Uname: Linux 3.16.0-45-generic x86_64
NonfreeKernelModules: fglrx
Annotation: Your system might become unstable now and might need to be restarted.
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
Date: Thu Aug 6 06:00:27 2015
Failure: oops
InstallationDate: Installed on 2013-02-13 (904 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: linux-lts-utopic
Title: [147461.082140] BUG: soft lockup - CPU#3 stuck for 22s! [khugepaged:40]
UpgradeStatus: Upgraded to trusty on 2014-05-12 (451 days ago)
---
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=5789d1b5-fee2-4f44-8401-ae2633a5a6d9
InstallationDate: Installed on 2013-02-13 (1040 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
MachineType: System manufacturer System Product Name
NonfreeKernelModules: fglrx
Package: linux (not installed)
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-21-generic root=/dev/mapper/ubuntu-root ro quiet splash nogpumanager vt.handoff=7
ProcVersionSignature: Ubuntu 4.2.0-21.25~14.04.1-generic 4.2.6
RelatedPackageVersions:
linux-restricted-modules-4.2.0-21-generic N/A
linux-backports-modules-4.2.0-21-generic N/A
linux-firmware 1.127.19
RfKill:
Tags: trusty
Uname: Linux 4.2.0-21-generic x86_64
UpgradeStatus: Upgraded to trusty on 2014-05-12 (586 days ago)
UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo
WifiSyslog:
_MarkForUpload: True
dmi.bios.date: 05/22/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 5601
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: F1A75-M-PRO R2.0
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5601:bd05/22/2014:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnF1A75-M-PROR2.0:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
Eric Detheridge, thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1482187