Public bug reported:
Since upgrading to Maverick on a new Asus UL30A I've had problems with
sound crackling and glitching roughly every 2 minutes or so. Running the
system on battery increases the frequency of the problem, so that it
happens maybe once every 30 seconds or so. I see the same behaviour
regardless of the app playing back audio - it happens with local music,
streamed music (via flash websites), videos, etc. I've tried a number of
things to track this down, including running the 2.6.37rc2 kernel from
the mainline ppa and installing packages from the ubuntu-audio-devs ppa,
but nothing seems to help.
One thing that I have noticed which might help track this down is that I
regularly use the padevchooser app to stream music from the UL30A laptop
across to a desktop system, and even when doing this I get the same
glitchy audio playback. This would seem to suggest to me that the
problem doesn't lie in the alsa driver, but rather in pulseaudio or
somewhere else in the maverick software stack.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
Uname: Linux 2.6.36-020636-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: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: nyall 1763 F.... pulseaudio
/dev/snd/pcmC0D0p: nyall 1763 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe9f4000 irq 45'
Mixer name : 'Intel Cantiga HDMI'
Components : 'HDA:10ec0269,10431443,00100004
HDA:80862802,80860101,00100000'
Controls : 15
Simple ctrls : 8
Date: Sat Nov 20 12:51:04 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64
(20100928)
PackageArchitecture: all
ProcEnviron:
LANG=en_AU.utf8
SHELL=/bin/bash
SelectedCard: 0 Intel HDA-Intel - HDA Intel
SourcePackage: alsa-driver
Symptom: audio
Title: [Realtek ALC269] Playback problem
dmi.bios.date: 12/28/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 212
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: UL30A
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr212:bd12/28/2009:svnASUSTeKComputerInc.:pnUL30A:pvr1.0:rvnASUSTeKComputerInc.:rnUL30A:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: UL30A
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug maverick
--
[Realtek ALC269] Playback problem on Asus ul30a
https://bugs.launchpad.net/bugs/677709
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