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[Erich Eickmeyer <erich@xxxxxxxxxxxxxxxxxx>]

Bug still exists in Ubuntu 18.04, 18.10, and 19.04. Workaround has been:

killall xfce4-volumed
xfce4-volumed

This affects Ubuntu Studio since this bug pops-up anytime one uses
ubuntustudio-controls to switch between Jack and PulseAudio as the
primary sound server.

** Also affects: ubuntustudio
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1291855

Title:
  After pulseaudio restart, volume keys no longer work

Status in Ubuntu Studio:
  New
Status in xfce4-volumed package in Ubuntu:
  Confirmed

Bug description:
  # Context

  Asus n55sf laptop using Xubuntu 13.10.
  Dedicated volume keys on the side of the keyboard work out-of-the-box.

  # How to reproduce

  (Next sentence is not the problem but the steps to reproduce!)
  Sometimes pulseaudio is interrupted (e.g. restarted for some reason, for example with `pulseaudio -k`).  Sometimes pulseaudio crashes and is automatically restarted thus sound works again. 
  To reproduce the problem either kill pulseaudio or issue pulseaudio -k.

  # Expected behavior

  * pulseaudio works again
  * volume keys work just like after login: notification shows volume bar with changing value, audio volume heard actually changes

  # Observed behavior (problem)

  * pulseaudio works again (ok)
  * volume keys don't work: no notification, no volume change (problem).

  # Workaround

  * One workaround is to logout/login.
  * Another, simpler, workaround: killall xfce4-volumed ; xfce4-volumed

  # Additional information

  When bug happens, xfce4-volumed is still present. When pulseaudio
  stops, xfce4-volumed outputs:

  (xfce4-volumed:3798): xfce4-volumed-CRITICAL **: xvd_context_state_callback: The connection failed or was disconnected, is PulseAudio Daemon running?
  ) = 151

  After that xfce4-volumed still receives volume keys event and reacts,
  as shown by strace, but produces no notification or actual volume
  change.


  lsb_release -rd

  Description:	Ubuntu 13.10
  Release:	13.10

  
  LC_ALL=C apt-cache policy xfce4-volumed

  xfce4-volumed:
    Installed: 0.2.0-0ubuntu1
    Candidate: 0.2.0-0ubuntu1
    Version table:
   *** 0.2.0-0ubuntu1 0
          500 http://fr.archive.ubuntu.com/ubuntu/ saucy/universe amd64 Packages
          100 /var/lib/dpkg/status

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: xfce4-volumed 0.2.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4
  Uname: Linux 3.11.0-18-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  Date: Thu Mar 13 09:31:24 2014
  MarkForUpload: True
  SourcePackage: xfce4-volumed
  UpgradeStatus: No upgrade log present (probably fresh install)

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