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[Richard Moore <richard_moore100@xxxxxxxxxxx>]

I had the same problem with this upgrade and an ICH6. Alsamixer and 'm'
for unmute fixed it. The mute state is not at all obvious; I would guess
its starting value/default changed?

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https://bugs.launchpad.net/bugs/1338233

Title:
  [ICH4 - Intel ICH6, playback] No sound at all

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

Bug description:
  Sound worked perfectly on ubuntu 12.04 LTS, no more after upgrade to 14.04 LTS.
  Tryed to execute live usb stick with ubuntu 12.04 LTS and it works fine.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic i686
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  charlotte   1438 F.... pulseaudio
   /dev/snd/controlC1:  charlotte   1438 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Jul  6 14:59:44 2014
  InstallationDate: Installed on 2014-05-25 (42 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
  PackageArchitecture: all
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:ICH6 failed
  Symptom_Card: Microsoft LifeCam VX-5000 - Microsoft LifeCam VX-5000
  Symptom_DevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  charlotte   1438 F.... pulseaudio
   /dev/snd/controlC1:  charlotte   1438 F.... pulseaudio
  Symptom_Type: No sound at all
  Title: [ICH4 - Intel ICH6, playback] No sound at all
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/03/2004
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 786C3 v01.04
  dmi.board.name: 0914h
  dmi.board.vendor: Hewlett-Packard
  dmi.chassis.type: 6
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvr786C3v01.04:bd11/03/2004:svnHewlett-Packard:pnhpworkstationxw4200:pvr:rvnHewlett-Packard:rn0914h:rvr:cvnHewlett-Packard:ct6:cvr:
  dmi.product.name: hp workstation xw4200
  dmi.sys.vendor: Hewlett-Packard

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