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Title: 168c:002b ath9k wireless module interferes with low latency audio Status in Linux: New Status in linux-lowlatency package in Ubuntu: Triaged Bug description: When running Jackd at lower latencies, there are three or four major xruns every minute or so. If the wireless is connected. If the wireless is disabled it gets much worse with an xrun every 5 seconds or so. As far as I know the tx is powered off at this point. If I modprobe -r ath9k, there are no xruns. I am not sure the wireless can be connected without causing problems, but when it is disabled and the tx turned off it should not interfere with anything. The module is able to do this if the wireless is dissabled and the machine rebooted, so there is a state when ath9k is first loaded that is fine. When the wireless is disabled it should go back to that state. For now, I have a script that unloads and reloads the kernel module for audio work. By the way, the xruns are worse with this version of the kernel than they were in precise (3.2 low latency kernel). ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: linux-image-3.5.0-1-lowlatency 3.5.0-1.1 ProcVersionSignature: Ubuntu 3.5.0-1.1-lowlatency 3.5.0-rc3 Uname: Linux 3.5.0-1-lowlatency i686 ApportVersion: 2.2.5-0ubuntu1 Architecture: i386 Date: Tue Jun 26 18:39:12 2012 InstallationMedia: Ubuntu-Studio 12.10 "Quantal Quetzal" - Alpha i386 (20120626) ProcEnviron: LANGUAGE=en_CA:en TERM=xterm PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: linux-lowlatency UpgradeStatus: No upgrade log present (probably fresh install) --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.25. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 ApportVersion: 2.2.5-0ubuntu1 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: len 1760 F.... xfce4-volumed len 1778 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0x58340000 irq 45' Mixer name : 'Realtek ALC272' Components : 'HDA:10ec0272,1025022f,00100001' Controls : 17 Simple ctrls : 9 CurrentDmesg: [ 33.443695] init: plymouth-stop pre-start process (1485) terminated with status 1 DistroRelease: Ubuntu 12.10 HibernationDevice: RESUME=UUID=f3c94466-e315-4542-9eb3-8dc577170995 InstallationMedia: Ubuntu-Studio 12.10 "Quantal Quetzal" - Alpha i386 (20120627.2) MachineType: Acer Aspire one Package: linux (not installed) ProcEnviron: LANGUAGE=en_CA:en TERM=xterm PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-1-lowlatency root=UUID=2bb7fb2c-e9fa-4187-9d00-8cf1e6597f0c ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.5.0-1.1-lowlatency 3.5.0-rc3 RelatedPackageVersions: linux-restricted-modules-3.5.0-1-lowlatency N/A linux-backports-modules-3.5.0-1-lowlatency N/A linux-firmware 1.82 Tags: quantal Uname: Linux 3.5.0-1-lowlatency i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 11/28/2009 dmi.bios.vendor: Acer dmi.bios.version: V1.25 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: Aspire one dmi.board.vendor: Acer dmi.board.version: V1.25 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.25 dmi.modalias: dmi:bvnAcer:bvrV1.25:bd11/28/2009:svnAcer:pnAspireone:pvrV1.25:rvnAcer:rnAspireone:rvrV1.25:cvnAcer:ct10:cvrV1.25: dmi.product.name: Aspire one dmi.product.version: V1.25 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1018220/+subscriptions -- Mailing list: https://launchpad.net/~ubuntustudio-bugs Post to : ubuntustudio-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntustudio-bugs More help : https://help.launchpad.net/ListHelp