Public bug reported:
I'm using Ubuntu 12.04 with the latest updates up to the 26th of July 2012. The
kernel version is linux-image-3.2.0-27-generic.
The system suddenly locked with essentially no load. Had to power off the
system the hard way. After rebooting I analysed the syslog and found a "BUG:
soft lockup - CPU#1 stuck for 23s! [gnome-settings-:2158]" message.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-27-generic 3.2.0-27.43
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: beffa 2217 F.... pulseaudio
/dev/snd/controlC2: beffa 2217 F.... pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not
found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf7ffc000 irq 91'
Mixer name : 'Analog Devices AD1984A'
Components : 'HDA:11d4194a,1028026e,00100400'
Controls : 35
Simple ctrls : 21
Card1.Amixer.info:
Card hw:1 'Audio8DJ'/'Native Instruments Audio 8 DJ (usb-0000:00:1d.7-5)'
Mixer name : 'Audio 8 DJ'
Components : ''
Controls : 5
Simple ctrls : 0
Card1.Amixer.values:
Card2.Amixer.info:
Card hw:2 'AK5370'/'AKM AK5370 at usb-0000:00:1d.2-2, full speed'
Mixer name : 'USB Mixer'
Components : 'USB0556:0001'
Controls : 2
Simple ctrls : 1
Card2.Amixer.values:
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 78
Mono: Capture 58 [74%] [0.00dB] [on]
Date: Fri Jul 27 10:12:20 2012
HibernationDevice: RESUME=UUID=731d6ae7-2f24-45b4-a874-cdda7c83aaed
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64
(20120425)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: Dell Inc. Precision WorkStation T5500
ProcEnviron:
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 VESA VGA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-27-generic
root=UUID=a575b9e5-0f12-432e-9e78-cef745e15837 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-27-generic N/A
linux-backports-modules-3.2.0-27-generic N/A
linux-firmware 1.79
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:
Jul 27 09:15:43 leo kernel: [ 510.031634] audit_printk_skb: 54 callbacks
suppressed
Jul 27 09:15:43 leo kernel: [ 510.031637] type=1400 audit(1343373343.548:30):
apparmor="STATUS" operation="profile_replace" name="/sbin/dhclient" pid=4513
comm="apparmor_parser"
Jul 27 09:15:43 leo kernel: [ 510.031723] type=1400 audit(1343373343.548:31):
apparmor="STATUS" operation="profile_replace"
name="/usr/lib/NetworkManager/nm-dhcp-client.action" pid=4513
comm="apparmor_parser"
Jul 27 09:15:43 leo kernel: [ 510.031790] type=1400 audit(1343373343.548:32):
apparmor="STATUS" operation="profile_replace"
name="/usr/lib/connman/scripts/dhclient-script" pid=4513 comm="apparmor_parser"
Jul 27 10:11:32 leo kernel: [ 3851.855088] CE: hpet increased min_delta_ns to
20113 nsec
dmi.bios.date: 11/30/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0D883F
dmi.board.vendor: Dell Inc.
dmi.board.version: A04
dmi.chassis.type: 7
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA07:bd11/30/2010:svnDellInc.:pnPrecisionWorkStationT5500:pvr:rvnDellInc.:rn0D883F:rvrA04:cvnDellInc.:ct7:cvr:
dmi.product.name: Precision WorkStation T5500
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug precise running-unity
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https://bugs.launchpad.net/bugs/1029819
Title:
BUG: soft lockup - CPU#1 stuck for 23s!
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