Public bug reported:
Since upgrading to the 2.6.31-20-generic kernel on my Lenovo Thinkpad
X61s, one core of the CPU is spiking approximately every 3 seconds. Top
indicates the process that is spiking the CPU is "events/0". This did
not occur prior to the 2.6.31-20-generic upgrade.
ProblemType: Bug
Architecture: i386
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
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: tc1 2598 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe020000 irq 17'
Mixer name : 'Analog Devices AD1984'
Components : 'HDA:11d41984,17aa20d6,00100400'
Controls : 30
Simple ctrls : 19
Date: Thu Mar 11 09:37:01 2010
DistroRelease: Ubuntu 9.10
HibernationDevice: RESUME=UUID=4993dee3-6e6f-4230-abd1-c6b76ea07d27
MachineType: LENOVO 7668CTO
Package: linux-image-2.6.31-20-generic 2.6.31-20.57
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcCmdLine: root=UUID=1dfcdaa6-c454-4f19-949c-3c86c4b46729 ro quiet splash
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-20.57-generic
RelatedPackageVersions:
linux-backports-modules-2.6.31-20-generic N/A
linux-firmware 1.26
SourcePackage: linux
Uname: Linux 2.6.31-20-generic i686
WpaSupplicantLog:
dmi.bios.date: 07/02/2007
dmi.bios.vendor: LENOVO
dmi.bios.version: 7NET25WW (1.06 )
dmi.board.name: 7668CTO
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:bvr7NET25WW(1.06):bd07/02/2007:svnLENOVO:pn7668CTO:pvrThinkPadX61s:rvnLENOVO:rn7668CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7668CTO
dmi.product.version: ThinkPad X61s
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386
--
events/0 spikes CPU every 3 seconds since upgrade to 2.6.31-20
https://bugs.launchpad.net/bugs/537396
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