Public bug reported:
Binary package hint: pulseaudio
When playing back sound, crackling sounds can be heard in the left
channel. This occurs when the intensity of the sound in the left channel
is high.
Playback has been tested using a variety of sources, including video
playback with VLC, music playback with Spotify (native Linux preview
client) and wave sound playback with aplay. It was not noticed before
upgrading from 10.04 to 10.10 or when using Windows 7 on the same
computer.
Sound is generated by an M-Audio Audiophile 2496 sound card, sent
through a Behringer Xenyx 802 mixer and then played back through both
stereo speakers and headphones.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: pulseaudio 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu21.1
ProcVersionSignature: Ubuntu 2.6.35-23.37-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1',
'/dev/snd/hwC1D2', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p',
'/dev/snd/pcmC1D1c', '/dev/snd/pcmC1D1p', '/dev/snd/pcmC1D2c',
'/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/pcmC0D0c',
'/dev/snd/pcmC0D0p', '/dev/snd/midiC0D0', '/dev/snd/seq', '/dev/snd/timer']
failed with exit code 1:
Card0.Amixer.info:
Card hw:0 'M2496'/'M Audio Audiophile 24/96 at 0xdf00, irq 19'
Mixer name : 'ICE1712 - multitrack'
Components : ''
Controls : 48
Simple ctrls : 26
Card1.Amixer.info:
Card hw:1 'Intel'/'HDA Intel at 0xfbff8000 irq 51'
Mixer name : 'Realtek ALC889A'
Components : 'HDA:10ec0885,1458a102,00100101'
Controls : 38
Simple ctrls : 21
Date: Tue Nov 16 06:05:54 2010
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100317.1)
ProcEnviron:
PATH=(custom, user)
LANG=en_US.utf8
SHELL=/usr/bin/fish
SelectedCard: 0 M2496 ICE1712 - M Audio Audiophile 24/96
SourcePackage: pulseaudio
Symptom: audio
Title: [ICE1712 - M Audio Audiophile 24/96] pactl stat failed to find default
card
dmi.bios.date: 07/31/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F3
dmi.board.name: P55M-UD4
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.:bvrF3:bd07/31/2009:svnGigabyteTechnologyCo.,Ltd.:pnP55M-UD4:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55M-UD4:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P55M-UD4
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
mtime.conffile..etc.pulse.default.pa: 2010-04-08T23:31:36.018414
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug maverick
--
[M-Audio Audiophile 2496] Crackling sounds from left channel during sound
playback
https://bugs.launchpad.net/bugs/675866
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