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[Raymond <893210@xxxxxxxxxxxxxxxxxx>]

https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1078704

however ad1981b is also used in notebook or desktop

this mean that you need to differentitate desktop and notebook

most likely you need pulseaudio to adjust the element in speaker path in
alsa-mixer.c if notebook use master for the speaker

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https://bugs.launchpad.net/bugs/893210

Title:
  [Dell OptiPlex GX620 - AD1981b, playback] No sound at all

Status in ALSA driver:
  Confirmed
Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  fresh install of ubuntu studio and updates but internal speakers do
  not play. dell optiplex gx620 love ya

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: alsa-base 1.0.24+dfsg-0ubuntu2
  ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
  Uname: Linux 3.0.0-13-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  Card0.Amixer.info:
   Card hw:0 'ICH7'/'Intel ICH7 with AD1981B at irq 23'
     Mixer name	: 'Analog Devices AD1981B'
     Components	: 'AC97a:41445374'
     Controls      : 28
     Simple ctrls  : 20
  Card1.Amixer.info:
   Card hw:1 'Device'/'C-Media Electronics Inc. USB Multimedia Audio Device at usb-0000:00:1d.7-4.1.4,'
     Mixer name	: 'USB Mixer'
     Components	: 'USB0d8c:0105'
     Controls      : 13
     Simple ctrls  : 6
  Date: Mon Nov 21 11:51:25 2011
  InstallationMedia: Ubuntu-Studio 11.10 "Oneiric Ocelot" - Release i386 (20111011.1)
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:ICH7 failed
  Symptom_Card: CM108 Audio Controller - USB Multimedia Audio Device
  Symptom_Type: No sound at all
  Title: [ICH4 - Intel ICH7, playback] No sound at all
  UpgradeStatus: Upgraded to oneiric on 2011-11-12 (8 days ago)
  dmi.bios.date: 11/30/2006
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.name: 0F8101
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 15
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd11/30/2006:svnDellInc.:pnOptiPlexGX620:pvr:rvnDellInc.:rn0F8101:rvr:cvnDellInc.:ct15:cvr:
  dmi.product.name: OptiPlex GX620
  dmi.sys.vendor: Dell Inc.

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