After natty update today, system is unresponsive and freezes often
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
After doing dist-upgrade on a Natty 11.04 installation today, the system is very unresponsive and freezes every few seconds for a bout a second.
The load average when completely idling is around 1.2 (for a dual-core intel CPU. "Idling" here means a graphical session with nothing running except a gnome terminal with htop running). The CPU performance graph shows spike of 100% cpu usage every 3 seconds for about 2 seconds each.eight of each peak the computer stops responding to keystrokes or mouse movement and the display freezes.
Looking at htop I can see that there is no process that actually uses the CPU, but htop does show the CPU being over utilized but the usage display is mostly red - which means, IIUC, "IO-Wait".
Usually when I get a lot of IO-Wait in the CPU usage it means swap deprivation, though this is not the case - here is the output of free:
total used free shared buffers cached
Mem: 2014784 1799424 215360 0 138908 811556
-/+ buffers/cache: 848960 1165824
Swap: 4000148 0 4000148
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-
Regression: Yes
Reproducible: Yes
ProcVersionSign
Uname: Linux 2.6.38-1-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: AD198x Analog [AD198x Analog]
Subdevices: 1/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe020000 irq 48'
Mixer name : 'Analog Devices AD1984'
Components : 'HDA:11d41984,
Controls : 31
Simple ctrls : 19
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'
Mixer name : 'ThinkPad EC 7KHT24WW-1.08'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Tue Feb 1 16:46:38 2011
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha amd64 (20100701)
MachineType: LENOVO 88986DG
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
3.3V 32-bit PC Card
ProcEnviron:
LANGUAGE=
PATH=(custom, user)
LANG=en_US.UTF-8
LC_MESSAGES=
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.46
SourcePackage: linux
dmi.bios.date: 11/14/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC5WW (2.25 )
dmi.board.name: 88986DG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 88986DG
dmi.product.
dmi.sys.vendor: LENOVO
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
I don't believe the problem is with the current kernel (2.6.38-1) because when I boot with an older kernel (2.6.37), I get the same behavior.