Public bug reported:
When playing any sound source (from aplay all the way up to
MythTV/mplayer), I get bad stuttering and crackling audio. This includes
intermittent periods of solid crackling, and also some periods when it's
possible to distinguish the underlying sound. The audio output persists
for a fraction of a second after I stop the sound source. I'm using all
the default audio options in Natty, to which I just upgraded. However, I
replaced my motherboard at the same time so there's no single change I
can identify as the most likely culprit.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
Uname: Linux 2.6.39-020639rc4-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: adam 23868 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Generic'/'HD-Audio Generic at 0xfe01c000 irq 51'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,00aa0100,00100200'
Controls : 4
Simple ctrls : 1
Card0.Amixer.values:
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Card1.Amixer.info:
Card hw:1 'Generic_1'/'HD-Audio Generic at 0xfe020000 irq 16'
Mixer name : 'Realtek ALC889'
Components : 'HDA:10ec0889,1458a102,00100004'
Controls : 36
Simple ctrls : 21
Date: Sat Jul 30 17:02:55 2011
PackageArchitecture: all
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Generic_1 failed
Symptom_Card: Internal Audio - HD-Audio Generic
Symptom_Jack: Green Line Out, Rear
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [GA-A75M-UD2H, Realtek ALC889, Green Line Out, Rear] Underruns, dropouts
or crackling sound
UpgradeStatus: Upgraded to natty on 2011-07-28 (2 days ago)
dmi.bios.date: 06/08/2011
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: GA-A75M-UD2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias:
dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd06/08/2011:svnGigabyteTechnologyCo.,Ltd.:pnGA-A75M-UD2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnGA-A75M-UD2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: GA-A75M-UD2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty
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https://bugs.launchpad.net/bugs/818686
Title:
[GA-A75M-UD2H, Realtek ALC889, Green Line Out, Rear] Bad stuttering
when playing any sound
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