** Description changed:

+ [Impact]
+ pulseaudio daemon crashes, interrupting sound output/input.
+ [Test Case]
+ Theoretical test case (crash does not happen for all users):
+ 1. Find some headphones and/or microphone. Ensure you do not wear the
+    headphones during the test as it may be loud.
+ 2. Set audio output/input volumes to maximum.
+ 3. Unplug and replug the headphones/microphone.
+ 4. Check that that pulseaudio process is still running, with a start time
+    older than when you began this test case.
+ [Regression Potential]
+ Low. This SRU affects the pulseaudio daemon only so the worst case would be 
loss of sound output/input. The same patches have been released to
+ 17.10 for a month already and zero regressions of the crashes have
+ occurred worldwide since then.
+ [Other Info]
+ Debdiff patch is attached to the most prolific bug 1539209.
+ [Original Description]
  This error is there when i get back to the computer after a while of no
  use, and at login after restart. haven't seen this error while the
  system is "active"/in use.
  I have been unable to provoke the error to come.
  I'm not sure it is related, but when i plug in a headset, the audio volume 
goes through the roof, and a loud (painfully so) scratching sound is coming 
from the headset until i press Vol+. Vol- does nothing till i have pressed up 
at least once.
  But the bug report thing does not pop up when the sound issue is there.
  Description:  Ubuntu Xenial Xerus (development branch)
  Release:      16.04
    Installed: 1:8.0-0ubuntu2
    Candidate: 1:8.0-0ubuntu2
    Version table:
   *** 1:8.0-0ubuntu2 500
          500 http://dk.archive.ubuntu.com/ubuntu xenial/main amd64 Packages
          100 /var/lib/dpkg/status
  ProblemType: Crash
  DistroRelease: Ubuntu 16.04
  Package: pulseaudio 1:8.0-0ubuntu2
  ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
  Uname: Linux 4.4.0-15-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
   /dev/snd/controlC0:  tbs       22776 F.... pulseaudio
  CrashCounter: 1
  CurrentDesktop: Unity
  Date: Mon Mar 28 12:39:45 2016
  ExecutablePath: /usr/bin/pulseaudio
  InstallationDate: Installed on 2016-01-14 (73 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
  ProcCmdline: /usr/bin/pulseaudio --start --log-target=syslog
  Signal: 6
  SourcePackage: pulseaudio
   pa_alsa_path_set_volume () from /usr/lib/pulse-8.0/modules/libalsa-util.so
   ?? () from /usr/lib/pulse-8.0/modules/libalsa-util.so
   ?? () from /usr/lib/pulse-8.0/modules/libalsa-util.so
   pa_source_process_msg () from 
   ?? () from /usr/lib/pulse-8.0/modules/libalsa-util.so
  Title: pulseaudio crashed with SIGABRT in pa_alsa_path_set_volume()
  UpgradeStatus: Upgraded to xenial on 2016-03-19 (8 days ago)
  UserGroups: adm cdrom dialout dip lp lpadmin plugdev root sambashare sudo 
  dmi.bios.date: 09/18/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G5ETA3WW (2.63 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 244743G
  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.product.name: 244743G
  dmi.product.version: ThinkPad W530
  dmi.sys.vendor: LENOVO

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  pulseaudio crashed with SIGABRT in pa_alsa_path_set_volume() from
  source_write_volume_cb() from source_set_port_cb() from
  pa_source_process_msg() from source_process_msg()

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