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[Raymond <1436252@xxxxxxxxxxxxxxxxxx>]

disable Auto mute mode mean driver don't mute the speaker when headphone
or line out is plugged

pulseaudio 's module-switch-on-available-port use alsa jack detection
kctls and playback switch to implement pulseaudio 's auto mute

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https://bugs.launchpad.net/bugs/1436252

Title:
  Behaves inconsistently when you unplug headphones

Status in PulseAudio sound server:
  New
Status in pulseaudio package in Ubuntu:
  New

Bug description:
  In the beginning headphones are plugged in, and "Auto-Mute Mode" set "Disabled" in alsamixer.
  Start pulseaudio.
  Then unplug headphones. Speakers are muted.
  Then plug headphones in. Speakers are muted.
  Then unplug headphones. Speaker volume is unmuted.

  I expect Speaker levels and muted/unmuted state of Speakers in
  alsamixer stay intact when you plug headphones in or out. And
  concerning the Auto-Mute Mode "Disabled", Speakers should not get
  effectively muted when headphones are plugged in.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: pulseaudio 1:4.0-0ubuntu11.1
  ProcVersionSignature: Ubuntu 3.13.0-48.80-lowlatency 3.13.11-ckt16
  Uname: Linux 3.13.0-48-lowlatency x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  jarnos     2255 F.... panel-12-mixer
                        jarnos     8103 F.... alsamixer
                        jarnos     8313 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Wed Mar 25 11:59:07 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2014-09-21 (185 days ago)
  InstallationMedia: Ubuntu-Studio 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.1)
  SourcePackage: pulseaudio
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/26/2011
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 2.6.6
  dmi.board.name: 0RF703
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 6
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr2.6.6:bd06/26/2011:svnDellInc.:pnOptiPlex745:pvr:rvnDellInc.:rn0RF703:rvr:cvnDellInc.:ct6:cvr:
  dmi.product.name: OptiPlex 745
  dmi.sys.vendor: Dell Inc.

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