Comment 14 for bug 787210

Hi guys

In the end I replaced the module by a Broadcom one a few weeks ago. The
laptop is running as clean as can be. It never freezes, I suspend/resume it
all the time and I disable/enable network at will. I rebooted maybe 2-3
times over the past weeks, mainly because of installed updates.

I could not get a meaningful error code out of the ath9k driver although I
tried all procedures. I am not a developer, but maybe a debug module
printing out some essential status information could help here.

Kind regards
Sam

On Tue, Nov 15, 2011 at 11:38 AM, Guillaume Gay
<email address hidden>wrote:

> Hi,
>
> I am also affected by this bug on a Compaq Mini 311C with Xubuntu 11.10
> (3.0.0-12-generic kernel).
> lspci gives:
> 03:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless
> Network Adapter (PCI-Express) (rev 01)
>
> A simple "sudo rmmod ath9k" suffices to freeze the system completely
> when the wifi is connected. When it's not, every thing goes well.
>
> I'll try the steps of comment #6 at home as I don't have any wifi access
> point here.
>
> Thank you for addressing this bug!
>
> Guillaume
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/787210
>
> Title:
> ath9k drivers freeze the system when changing state
>
> Status in “linux” package in Ubuntu:
> Incomplete
>
> 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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