This usually occurs after a suspend/resume. I'm running Ubuntu 10.10 on an HP Elitebook 8530w with Intel wireless and Nvidia Quadro with Nvidia drivers.
Steps to reproduce:
1. Boot up the computer
2. Suspend
3. Resume
After some period of time the computer will completely freeze and no combination of keystrokes will recover it. The fan is running as fast as it can and high heat is noticed. The CPU seems maxed out but no way to really tell. If you have an SSH session open from another computer to the Ubuntu 10.10 computer that is locked there is no longer any interaction so you cannot tail the logs. The only way to recover is to hold down the power button and turn off the computer. This did not happen on Ubuntu 10.04.
Often after this happens and I power off the computer, turning it back on results in another freeze minutes after logging in. I can turn it back off and turn it on and usually work for hours without the freeze until the next time I suspend/resume.
I've tried plugging and unplugging the power cord repeatedly but this does not seem to cause the freeze.
This is a painful bug for obvious reasons for those of us who use Ubuntu as our primary business OS.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: linux-generic 2.6.35.23.25
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.35-23.41-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
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
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: cdillard 1923 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xdb320000 irq 47'
Mixer name : 'Analog Devices AD1984A'
Components : 'HDA:11d4194a,103c30e7,00100400 HDA:11c11040,103c1378,00100200'
Controls : 18
Simple ctrls : 11
Date: Thu Dec 2 08:27:01 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=/dev/sda5
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100406.1)
MachineType: Hewlett-Packard HP EliteBook 8530w
PccardctlIdent:
Socket 0:
product info: "RICOH", "Bay8Controller", "", ""
manfid: 0x0000, 0x0000
function: 254 (unknown)
PccardctlStatus:
Socket 0:
3.3V 16-bit PC Card
Subdevice 0 (function 0) bound to driver "pata_pcmcia"
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-23-generic root=UUID=677597b2-db17-475e-b673-7657c738465b ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.38
SourcePackage: linux
dmi.bios.date: 06/08/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PDV Ver. F.12
dmi.board.name: 30E7
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 90.27
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PDVVer.F.12:bd06/08/2010:svnHewlett-Packard:pnHPEliteBook8530w:pvrF.12:rvnHewlett-Packard:rn30E7:rvrKBCVersion90.27:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 8530w
dmi.product.version: F.12
dmi.sys.vendor: Hewlett-Packard
Some on Ubuntu Forums suggest that they've downgraded pm-utils to the Lucid version and that this has resolved the freeze issue.