Public bug reported:

Sound mute randomly
ubuntu 13.04  64bit fresh install

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  faicel     2141 F.... pulseaudio
                      faicel     2658 F.... pulseaudio
Date: Sat Apr 27 11:37:53 2013
InstallationDate: Installed on 2013-04-26 (0 days ago)
InstallationMedia: This
MarkForUpload: True
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Green Line Out, Rear
Symptom_Type: Digital clip or distortion, or "overdriven" sound
Title: [MS-7798, Realtek ALC887-VD, Green Line Out, Rear] Sound is distorted
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/26/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V1.0
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: B75MA-P45 (MS-7798)
dmi.board.vendor: MSI
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: MSI
dmi.chassis.version: 1.0
dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrV1.0:bd03/26/2012:svnMSI:pnMS-7798:pvr1.0:rvnMSI:rnB75MA-P45(MS-7798):rvr1.0:cvnMSI:ct3:cvr1.0:
dmi.product.name: MS-7798
dmi.product.version: 1.0
dmi.sys.vendor: MSI

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug raring

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https://bugs.launchpad.net/bugs/1173550

Title:
  [MS-7798, Realtek ALC887-VD, Green Line Out, Rear] Sound mute randomly

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

Bug description:
  Sound mute randomly
  ubuntu 13.04  64bit fresh install

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  faicel     2141 F.... pulseaudio
                        faicel     2658 F.... pulseaudio
  Date: Sat Apr 27 11:37:53 2013
  InstallationDate: Installed on 2013-04-26 (0 days ago)
  InstallationMedia: This
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
  Symptom_Card: Built-in Audio - HDA Intel PCH
  Symptom_Jack: Green Line Out, Rear
  Symptom_Type: Digital clip or distortion, or "overdriven" sound
  Title: [MS-7798, Realtek ALC887-VD, Green Line Out, Rear] Sound is distorted
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/26/2012
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: V1.0
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: B75MA-P45 (MS-7798)
  dmi.board.vendor: MSI
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: MSI
  dmi.chassis.version: 1.0
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrV1.0:bd03/26/2012:svnMSI:pnMS-7798:pvr1.0:rvnMSI:rnB75MA-P45(MS-7798):rvr1.0:cvnMSI:ct3:cvr1.0:
  dmi.product.name: MS-7798
  dmi.product.version: 1.0
  dmi.sys.vendor: MSI

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