** Tags added: cscc
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https://bugs.launchpad.net/bugs/787210
Title:
ath9k drivers freeze the system when changing state
Status in linux package in Ubuntu:
Fix Committed
Bug description:
Binary package hint: linux-image-generic
The ath9k driver freezes the laptop when the adapter changes state.
Reproduceable by enabling/disabling wireless adapter using the network
manager applet, or by suspending the system. The issue exists at least
in 10.10 as well, but never had issues running 10.04. Since applicable
in several kernel versions, reported this against linux-image-generic.
It's 32 bit stock kernel, latest updates, Natty 11.04 i386.
On 10.10 the system got freezes randomly just while browsing, which
was even worse. Used compat-wireless which made it much better but not
perfect (only freezes on state changes as mentioned above).
I am 100% sure it is triggered by the wireless driver: issuing "rmmod
ath9k ath9k_common ath9k_hw ath" prior to suspending the laptop,
followed by "modprobe ath9k" after resume, makes the freeze disappear.
I actually added a script in /etc/pm.d/sleep.d issuing these commands
and now laptop works normal.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-generic 2.6.38.8.22
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sam 1773 F.... xfce4-volumed
sam 1794 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'NVidia'/'HDA NVidia at 0x93100000 irq 23'
Mixer name : 'Nvidia MCP79/7A HDMI'
Components : 'HDA:111d7605,103c3651,00100402
HDA:10de0007,10de0101,00100100'
Controls : 18
Simple ctrls : 10
Date: Mon May 23 22:55:40 2011
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110426.1)
MachineType: Hewlett-Packard Compaq Mini 311-1100
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic
root=UUID=76ad9066-c058-4318-95ea-d214f8737341 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-8-generic N/A
linux-backports-modules-2.6.38-8-generic N/A
linux-firmware 1.52
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/07/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.12
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 3651
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 49.18
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: N/A
dmi.modalias:
dmi:bvnHewlett-Packard:bvrF.12:bd11/07/2009:svnHewlett-Packard:pnCompaqMini311-1100:pvr048F110000201C00000320000:rvnHewlett-Packard:rn3651:rvr49.18:cvnHewlett-Packard:ct10:cvrN/A:
dmi.product.name: Compaq Mini 311-1100
dmi.product.version: 048F110000201C00000320000
dmi.sys.vendor: Hewlett-Packard
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