Public bug reported:
Hi,
I am experiencing a crackling sound when playing audio, often in long
tones (test tone in ubuntu-bug app is a good example). It happens in
10.10 and in beta 12.04. I also tried live Fedora 16 to determine if
it's hardware problem but it worked fine.
Regards, Tom
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: SI7012 [SiS SI7012], device 0: Intel ICH [SiS SI7012]
Subdevices: 1/1
Subdevice #0: subdevice #0
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: krab1k 2053 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'SI7012'/'SiS SI7012 with ALC650F at irq 18'
Mixer name : 'Realtek ALC650F'
Components : 'AC97a:414c4723'
Controls : 50
Simple ctrls : 33
Date: Wed Mar 14 16:35:35 2012
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SI7012 failed
Symptom_Card: Built-in Audio - SiS SI7012
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [ICH - SiS SI7012, playback] Underruns, dropouts or crackling sound
UpgradeStatus: Upgraded to precise on 2012-03-05 (8 days ago)
dmi.bios.date: 07/05/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 300
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: A6Km
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr300:bd07/05/2007:svnASUSTeKComputerInc.:pnA6Km:pvr1.0:rvnASUSTeKComputerInc.:rnA6Km:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr:
dmi.product.name: A6Km
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 precise
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https://bugs.launchpad.net/bugs/955194
Title:
[ICH - SiS SI7012, playback] Crackling sound
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