Once or twice a week, the system becomes non-responsive, with the mouse cursor tracking mouse movement but no keyboard response. Until today I would resort to using the kernel magic keys to reboot the system (R-E-I-S-U-B). Today I remotely logged in from another machine on the LAN and discovered that not only was the kernel alive and all processes running, but that the "migration/0" and "migration/1" processes were consuming 50% of the CPU each, as reported by top(1). I suspect this is why the system becomes non-responsive.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-generic 3.2.0.53.63
ProcVersionSignature: Ubuntu 3.2.0-53.81-generic 3.2.50
Uname: Linux 3.2.0-53-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.4
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: andy 2195 F.... pulseaudio
/dev/snd/controlC0: andy 2195 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xee400000 irq 47'
Mixer name : 'Analog Devices AD1981'
Components : 'HDA:11d41981,17aa2025,00100200'
Controls : 21
Simple ctrls : 12
Card1.Amixer.info:
Card hw:1 'U0x46d0x804'/'USB Device 0x46d:0x804 at usb-0000:00:1d.7-6.2.2, high speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:0804'
Controls : 2
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 6144
Mono: Capture 4608 [75%] [24.00dB] [on]
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 79HT50WW-1.07'
Mixer name : 'ThinkPad EC 79HT50WW-1.07'
Components : ''
Controls : 2
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
Playback channels: Mono
Limits: Playback 0 - 14
Mono: Playback 7 [50%] [on]
Date: Mon Sep 9 16:56:22 2013
HibernationDevice: RESUME=UUID=5301c707-e227-46f3-8b49-a319582091a4
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: LENOVO 8743CTO
MarkForUpload: True
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-53-generic root=UUID=a9ba509e-76a3-4c03-b898-0409f24233eb ro quiet splash nomodeset vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-53-generic N/A
linux-backports-modules-3.2.0-53-generic N/A
linux-firmware 1.79.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/05/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7IET32WW (1.13 )
dmi.board.name: 8743CTO
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:bvr7IET32WW(1.13):bd02/05/2008:svnLENOVO:pn8743CTO:pvrThinkPadT60:rvnLENOVO:rn8743CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 8743CTO
dmi.product.version: ThinkPad T60
dmi.sys.vendor: LENOVO
Did this issue start happening after an update/upgrade? Was there a kernel version where you were not having this particular problem? This will help determine if the problem you are seeing is the result of the introduction of a regression, and when this regression was introduced. If this is a regression, we can perform a kernel bisect to identify the commit that introduced the problem.