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Re: [Bug 1296425] Re: pulseaudio is started twice - effectively making device management impossible.

 

On Mon, Aug 18, 2014 at 04:26:16PM AEST, Martin Pitt wrote:
> I don't know why aplay invokes pulseaudio (that seems wrong, as
> pulseaudio usually uses ALSA as a backend), but if passing on the
> environment (for DBUS_SESSION_BUS_ADDRESS etc.) helps, I'm fine with
> doing that. The main reason for passing an empty environment was to
> ensure that this does not use any localization.

Aplay invokes pulseaudio because if you have pulseaudio installed, ALSA
is configured to send its audio via pulseaudio, so you can get
individual volume control for ALSA apps. Since pulseaudio is not
running, pulseaudio gets spawned. An alternative way to solve this would
have been to set the environment variable PULSE_INTERNAL to 0.

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https://bugs.launchpad.net/bugs/1296425

Title:
  pulseaudio is started twice - effectively making device management
  impossible.

Status in “alsa-plugins” package in Ubuntu:
  Invalid
Status in “ubuntu-drivers-common” package in Ubuntu:
  Fix Released

Bug description:
  
  On the current kubuntu 14.04 live-image (and for a 13.10 upgraded system) pulseaudio is running twice. This makes attaching/deattaching of usb-headset and other stuff impossible because the two instances fight ove rthe events.

  Tow reproduce just boot up the current image and do a "ps -ef | grep
  pulseaudio"

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: pulseaudio 1:4.0-0ubuntu10
  ProcVersionSignature: Ubuntu 3.13.0-19.39-lowlatency 3.13.6
  Uname: Linux 3.13.0-19-lowlatency i686
  ApportVersion: 2.13.3-0ubuntu1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  sgh        2336 F.... pulseaudio
                        sgh        2796 F.... pulseaudio
   /dev/snd/controlC0:  sgh        2336 F.... pulseaudio
                        sgh        2796 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Sun Mar 23 22:36:50 2014
  InstallationDate: Installed on 2013-12-24 (89 days ago)
  InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20131224)
  SourcePackage: pulseaudio
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/02/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G7ET31WW (1.13 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 2356GCG
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrG7ET31WW(1.13):bd07/02/2012:svnLENOVO:pn2356GCG:pvrThinkPadT430s:rvnLENOVO:rn2356GCG:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2356GCG
  dmi.product.version: ThinkPad T430s
  dmi.sys.vendor: LENOVO

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