complete system hang; no response to SysRq

[shinyblue]

On this (and other) i5 machines, Ubuntu Precise has had daily lock-ups of this type.

But the problem had gone away, and now this week it's back (happened on 2 consecutive days). I suspect an upgrade around 4/5th Sept made the change.

Wasn't doing anything unusual or taxing at the time of the lock-up.

Reporting in case there's a patch that's been rolled back or something, that may be identifiable. Possibly between Ubuntu, with Linux 3.2.0-29-generic and Ubuntu, with Linux 3.2.0-30-generic.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-30-generic 3.2.0-30.48
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu13
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: itmanager 3492 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xfe520000 irq 51'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:10ec0892,80862000,00100302 HDA:80862805,80862805,00100000'
   Controls : 52
   Simple ctrls : 21
Date: Thu Sep 6 16:26:47 2012
HibernationDevice: RESUME=UUID=1ed6427f-98cc-42ef-a710-1c140af2a61b
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
MachineType: VeryPC BL5340-D
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-30-generic root=UUID=276c937d-42ed-41b8-8a06-7f3b5da1f023 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-30-generic N/A
 linux-backports-modules-3.2.0-30-generic N/A
 linux-firmware 1.79.1
RfKill:

SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/09/2012
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BLH6710H.86A.0155.2012.0509.1620
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DH67CF
dmi.board.vendor: Intel Corporation
dmi.board.version: AAG10215-207
dmi.chassis.type: 3
dmi.chassis.vendor: VeryPC
dmi.chassis.version: Broadleaf
dmi.modalias: dmi:bvnIntelCorp.:bvrBLH6710H.86A.0155.2012.0509.1620:bd05/09/2012:svnVeryPC:pnBL5340-D:pvr:rvnIntelCorporation:rnDH67CF:rvrAAG10215-207:cvnVeryPC:ct3:cvrBroadleaf:
dmi.product.name: BL5340-D
dmi.sys.vendor: VeryPC

[penalvch (penalvch)]

shinyblue, thank you for reporting this and helping make Ubuntu better. Could you please capture the oops following https://wiki.ubuntu.com/KernelTeam/KernelTeamBugPolicies#Capturing_OOPs ?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]