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** Changed in: alsa-driver (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1096822

Title:
  [ASRock 970 Extreme3, Realtek ALC892, Green Line Out, Rear] Background
  noise or low volume

Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  After starting a programm that uses sound, like vlc, skype, vbox, ....
  the sound is very bad, a lot of mush. After mute/unmute it works or
  just changing the volume (also if change it to the same value again)
  it works. If I use vlc to hear radio and change the channel, the mush
  is back again. If then use mute/unmute or change the volume it
  disapears. I already tried to run the processor as full speed (no
  freqency change of the processor) the mush appears.

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu3
  ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
  Uname: Linux 3.5.0-21-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 2.6.1-0ubuntu9
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  heiner     4252 F.... pulseaudio
  Date: Mon Jan  7 11:14:01 2013
  InstallationDate: Installed on 2013-01-04 (2 days ago)
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
  MarkForUpload: True
  PackageArchitecture: all
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SB successful
  Symptom_Card: Internes Audio - HDA ATI SB
  Symptom_Jack: Green Line Out, Rear
  Symptom_PulsePlaybackTest: PulseAudio playback test successful
  Symptom_Type: High background noise, or volume is too low
  Title: [To Be Filled By O.E.M., Realtek ALC892, Green Line Out, Rear] 
Background noise or low volume
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/31/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.30
  dmi.board.name: 970 Extreme3
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP1.30:bd01/31/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rn970Extreme3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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