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[Jarno Suni <878986@xxxxxxxxxxxxxxxxxx>]

As for comment #39 PS 2, it does not help, even if you un-mute all
channels separately by amixer using the default (not pulse) device;
sound stays muted until you unmute using pulseaudio mixer.

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https://bugs.launchpad.net/bugs/878986

Title:
  amixer -q sset Master toggle does mute, but does not unmute!

Status in pulseaudio package in Ubuntu:
  Triaged

Bug description:
  I am using keyboard shortcuts to increase/decrease/mute volume by executing:
  amixer -q sset Master 5+
  amixer -q sset Master 5-
  amixer -q sset Master toggle

  From when I have updated to Ubuntu 11.10, 'amixer sset Master toggle'
  does mute the volume, but when i execute it again it does not unmute
  it. In command line, it looks fine:

  :~$ amixer sset Master toggle
  Simple mixer control 'Master',0
    Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
    Playback channels: Mono
    Limits: Playback 0 - 31
    Mono: Playback 16 [52%] [-22.50dB] [off]

  :~$ amixer sset Master toggle
  Simple mixer control 'Master',0
    Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
    Playback channels: Mono
    Limits: Playback 0 - 31
    Mono: Playback 16 [52%] [-22.50dB] [on]

  but it remains muted. I use pavucontrol to unmute sound from the GUI.

  
  Info:
  :~$ apt-cache policy alsa-utils
  alsa-utils:
    Installed: 1.0.24.2-0ubuntu8
    Candidate: 1.0.24.2-0ubuntu8
    Version table:
   *** 1.0.24.2-0ubuntu8 0
          500 http://rs.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
          100 /var/lib/dpkg/status

  :~$ lsb_release -rd
  Description:	Ubuntu 11.10
  Release:	11.10

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: linux-image-3.0.0-12-generic 3.0.0-12.20
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Uname: Linux 3.0.0-12-generic x86_64
  NonfreeKernelModules: fglrx
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  instructor  19328 F.... pulseaudio
   /dev/snd/pcmC0D0p:   instructor  19328 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfe9f8000 irq 43'
     Mixer name	: 'Realtek ALC883'
     Components	: 'HDA:10ec0883,1043829f,00100002'
     Controls      : 37
     Simple ctrls  : 22
  Card1.Amixer.info:
   Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfeafc000 irq 44'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100000'
     Controls      : 4
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  Date: Thu Oct 20 19:31:13 2011
  HibernationDevice: RESUME=UUID=cf6e9ff7-a63e-457c-aba4-706765c58de1
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  IwConfig:
   lo        no wireless extensions.
   
   eth0      no wireless extensions.
  MachineType: System manufacturer P5K
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=5611c46a-40ee-4ded-bbda-b8365335826b ro acpi_enforce_resources=lax quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: Upgraded to oneiric on 2011-10-16 (3 days ago)
  dmi.bios.date: 07/03/2007
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0603
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P5K
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0603:bd07/03/2007:svnSystemmanufacturer:pnP5K:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5K:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: P5K
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  instructor  19328 F.... pulseaudio
   /dev/snd/pcmC0D0p:   instructor  19328 F...m pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfe9f8000 irq 43'
     Mixer name	: 'Realtek ALC883'
     Components	: 'HDA:10ec0883,1043829f,00100002'
     Controls      : 37
     Simple ctrls  : 22
  Card1.Amixer.info:
   Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfeafc000 irq 44'
     Mixer name	: 'ATI R6xx HDMI'
     Components	: 'HDA:1002aa01,00aa0100,00100000'
     Controls      : 4
     Simple ctrls  : 1
  Card1.Amixer.values:
   Simple mixer control 'IEC958',0
     Capabilities: pswitch pswitch-joined penum
     Playback channels: Mono
     Mono: Playback [on]
  DistroRelease: Ubuntu 11.10
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  NonfreeKernelModules: fglrx
  Package: alsa-base 1.0.24+dfsg-0ubuntu2
  PackageArchitecture: all
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Tags:  oneiric
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: Upgraded to oneiric on 2011-10-16 (3 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 07/03/2007
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0603
  dmi.board.asset.tag: To Be Filled By O.E.M.
  dmi.board.name: P5K
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0603:bd07/03/2007:svnSystemmanufacturer:pnP5K:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5K:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: P5K
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  --- 
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  DistroRelease: Ubuntu 11.10
  InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
  NonfreeKernelModules: fglrx
  Package: alsa-utils 1.0.24.2-0ubuntu8
  PackageArchitecture: amd64
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  Tags:  oneiric
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: Upgraded to oneiric on 2011-10-16 (3 days ago)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

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