Hans Deragon, as per http://download.lenovo.com/express/ddfm.html an update to your BIOS is available (2.30). If you update to this following https://help.ubuntu.com/community/BiosUpdate does it change anything? If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Thank you for your understanding. ** Description changed: - Once in a blue moon, lets say once every two months, kworker runs with - 40-60% CPU because of kernel modules e1000 and/or e1000e. Reboot the - machine does not help. I rebooted twice to no avail + Approximately once every two months, kworker runs with 40-60% CPU + because of kernel modules e1000 and/or e1000e. Rebooting the machine + does not help. - I then ran: - - sudo modprobe -r e1000 - sudo modprobe -r e1000e - - and the problem was gone. - - When I run the following afterwards: - - sudo modprobe e1000 - sudo modprobe e1000e - - ... the kworker ran for less than 1s and exited. - - This particular problem was already reported in bug #887739. - - https://bugs.launchpad.net/ubuntu/+source/linux/+bug/887793 - - but was not the problem of the person that reported it, thus this new - bug report. + WORKAROUND: Execute at a terminal: + sudo modprobe -r e1000 + sudo modprobe -r e1000e + sudo modprobe e1000 + sudo modprobe e1000e ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-60-generic 3.2.0-60.91 ProcVersionSignature: Ubuntu 3.2.0-60.91-generic 3.2.55 Uname: Linux 3.2.0-60-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.6 Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] - Subdevices: 2/2 - Subdevice #0: subdevice #0 - Subdevice #1: subdevice #1 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog] + Subdevices: 2/2 + Subdevice #0: subdevice #0 + Subdevice #1: subdevice #1 Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xfe220000 irq 49' - Mixer name : 'Analog Devices AD1984' - Components : 'HDA:11d41984,17aa20bb,00100400' - Controls : 32 - Simple ctrls : 20 + Card hw:0 'Intel'/'HDA Intel at 0xfe220000 irq 49' + Mixer name : 'Analog Devices AD1984' + Components : 'HDA:11d41984,17aa20bb,00100400' + Controls : 32 + Simple ctrls : 20 Card29.Amixer.info: - Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT22WW-1.06' - Mixer name : 'ThinkPad EC 7KHT22WW-1.06' - Components : '' - Controls : 1 - Simple ctrls : 1 + Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7KHT22WW-1.06' + Mixer name : 'ThinkPad EC 7KHT22WW-1.06' + Components : '' + Controls : 1 + Simple ctrls : 1 Card29.Amixer.values: - Simple mixer control 'Console',0 - Capabilities: pswitch pswitch-joined penum - Playback channels: Mono - Mono: Playback [on] + Simple mixer control 'Console',0 + Capabilities: pswitch pswitch-joined penum + Playback channels: Mono + Mono: Playback [on] Date: Tue Apr 1 16:31:37 2014 HibernationDevice: RESUME=UUID=3b244221-fe9e-429c-8bd3-c541dbf92fcc InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: LENOVO 646066U MarkForUpload: True PccardctlIdent: - Socket 0: - no product info available + Socket 0: + no product info available PccardctlStatus: - Socket 0: - no card + Socket 0: + no card ProcEnviron: - LANGUAGE=en_CA:en - TERM=xterm - PATH=(custom, no user) - LANG=en_CA.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_CA:en + TERM=xterm + PATH=(custom, no user) + LANG=en_CA.UTF-8 + SHELL=/bin/bash ProcFB: - + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-60-generic root=/dev/mapper/hostname-root ro quiet splash nmi_watchdog=0 RelatedPackageVersions: - linux-restricted-modules-3.2.0-60-generic N/A - linux-backports-modules-3.2.0-60-generic N/A - linux-firmware 1.79.11 + linux-restricted-modules-3.2.0-60-generic N/A + linux-backports-modules-3.2.0-60-generic N/A + linux-firmware 1.79.11 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/27/2007 dmi.bios.vendor: LENOVO dmi.bios.version: 7LET44WW (1.14 ) dmi.board.name: 646066U dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr7LET44WW(1.14):bd06/27/2007:svnLENOVO:pn646066U:pvrThinkPadT61:rvnLENOVO:rn646066U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 646066U dmi.product.version: ThinkPad T61 dmi.sys.vendor: LENOVO -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1301003 Title: kworker runs with 40-60% CPU because of modules e1000 and/or e1000e To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1301003/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
