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[Bug 1185629] Re: Background hissing sound even when volume muted

 

you have to use hda Jack retask to Change the node 0x0d from speaker to
line out

http://voices.canonical.com/david.henningsson/2011/11/29/turn-your-mic-
jack-into-a-headphone-jack/


https://bugzilla.kernel.org/enter_bug.cgi?product=Drivers

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https://bugs.launchpad.net/bugs/1185629

Title:
  Background hissing sound even when volume muted

Status in “alsa-driver” package in Ubuntu:
  Confirmed

Bug description:
  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

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