Public bug reported:
Problem also occurs on the front headphone jack, and when using
different headphones. The volume of the static noise also increases
whenever I perform some action, e.g. clicking a tab, inserting a usb key
or compressing/uncompressing a tar.gz archive. There is also a
consistent pulsing superimposed on the background static noise.
Modifying /etc/modprobe.d/alsa-base.conf with various options for snd-
hda-intel have had little or no effect, and adjusting the sliders in
alsamixer have also proved fruitless.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.2.0-44.69-generic-pae 3.2.44
Uname: Linux 3.2.0-44-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.2
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: ccapo 2132 F.... pulseaudio
/dev/snd/controlC0: ccapo 2132 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xe0320000 irq 49'
Mixer name : 'SigmaTel STAC9271D'
Components : 'HDA:83847627,80862504,00100201'
Controls : 33
Simple ctrls : 20
Card1.Amixer.info:
Card hw:1 'U0x46d0x8d7'/'USB Device 0x46d:0x8d7 at usb-0000:00:1a.1-1, full
speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:08d7'
Controls : 3
Simple ctrls : 2
Date: Wed May 29 22:24:20 2013
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release i386 (20100816.1)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/tcsh
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Jack: Green Speaker, Rear
Symptom_Type: High background noise, or volume is too low
Title: [DG965WH, SigmaTel STAC9271D, Green Speaker, Rear] Background noise or
low volume
UpgradeStatus: Upgraded to precise on 2013-03-18 (73 days ago)
dmi.bios.date: 10/17/2006
dmi.bios.vendor: Intel Corp.
dmi.bios.version: MQ96510J.86A.1458.2006.1017.1151
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: DG965WH
dmi.board.vendor: Intel Corporation
dmi.board.version: AAD41692-304
dmi.chassis.asset.tag: snc302eeh
dmi.chassis.type: 2
dmi.modalias:
dmi:bvnIntelCorp.:bvrMQ96510J.86A.1458.2006.1017.1151:bd10/17/2006:svnSyx:pnDG965WH:pvrIntel965:rvnIntelCorporation:rnDG965WH:rvrAAD41692-304:cvn:ct2:cvr:
dmi.product.name: DG965WH
dmi.product.version: Intel 965
dmi.sys.vendor: Syx
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2013-05-29T22:20:16
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 precise
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https://bugs.launchpad.net/bugs/1185629
Title:
Background hissing sound even when volume muted
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