Public bug reported:
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-2.6.38-1-generic 2.6.38-1.28
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
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/controlC0',
'/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p',
'/dev/snd/pcmC0D1p', '/dev/snd/by-path', '/dev/snd/controlC29', '/dev/snd/seq',
'/dev/snd/timer'] failed with exit code 1:
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:11d41984,17aa20bb,00100400'
Controls : 31
Simple ctrls : 19
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw
7KHT24WW-1.08'
Mixer name : 'ThinkPad EC 7KHT24WW-1.08'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.Amixer.values:
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=UUID=06b00630-2b14-4759-8d5e-6279daa42f63
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=en_US.UTF-8:en
PATH=(custom, user)
LANG=en_US.UTF-8
LC_MESSAGES=en_US.utf8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic
root=UUID=4b488e8d-8ec5-4891-abc3-c1958b0fe161 ro vga=792 splash quiet splash
vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-1-generic N/A
linux-backports-modules-2.6.38-1-generic N/A
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.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias:
dmi:bvnLENOVO:bvr7LETC5WW(2.25):bd11/14/2008:svnLENOVO:pn88986DG:pvrThinkPadT61:rvnLENOVO:rn88986DG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 88986DG
dmi.product.version: ThinkPad T61
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug kernel-uncat natty needs-upstream-testing
regression-release
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https://bugs.launchpad.net/bugs/711284
Title:
After natty update today, system is unresponsive and freezes often
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