100% reproducible on Yakkety:
0. I have USB sound card Creative SB Omni Surround 5.1 (works in stereo and 5.1 
output modes)
1. Current mode is stereo
2. Play song in Clementine (current exact version is 1.3.1-209-g1f95a23)
3. Decrease system volume slightly
4. Change output mode to 5.1
5. PulseAudio crashes in 100% of cases

** Tags added: yakkety

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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to pulseaudio in Ubuntu.
https://bugs.launchpad.net/bugs/981149

Title:
  pulseaudio crashed with SIGABRT in pa_sink_input_finish_move()

Status in pulseaudio package in Ubuntu:
  Triaged

Bug description:
  When I switch between my headphones and/or my Logitech lap desk N700
  speakers the sound will crash. I usually have to restart my laptop to
  get everything to work again.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.04
  Package: pulseaudio 1:1.1-0ubuntu15
  ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
  Uname: Linux 3.2.0-23-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu2
  Architecture: i386
  ArecordDevices:
   **** List of CAPTURE Hardware Devices ****
   card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
     Subdevices: 1/1
     Subdevice #0: subdevice #0
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  mark       6394 F.... pulseaudio
   /dev/snd/controlC0:  mark       6394 F.... pulseaudio
   /dev/snd/pcmC0D0p:   mark       6394 F...m pulseaudio
  Card0.Amixer.info:
   Card hw:0 'Intel'/'HDA Intel at 0xfc500000 irq 49'
     Mixer name : 'Realtek ALC268'
     Components : 'HDA:10ec0268,1179ff02,00100003 
HDA:11c11040,11790001,00100200'
     Controls      : 16
     Simple ctrls  : 9
  Card1.Amixer.info:
   Card hw:1 'N700'/'Logitech Logitech Speaker Lapdesk N700 at 
usb-0000:00:1d.0-2, full speed'
     Mixer name : 'USB Mixer'
     Components : 'USB046d:0a1a'
     Controls      : 2
     Simple ctrls  : 1
  Date: Fri Apr 13 16:28:44 2012
  ExecutablePath: /usr/bin/pulseaudio
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  ProcCmdline: /usr/bin/pulseaudio --start --log-target=syslog
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  Signal: 6
  SourcePackage: pulseaudio
  StacktraceTop:
   raise () from /lib/i386-linux-gnu/libc.so.6
   abort () from /lib/i386-linux-gnu/libc.so.6
   pa_sink_input_finish_move () from /usr/lib/libpulsecore-1.1.so
   pa_sink_move_all_finish () from /usr/lib/libpulsecore-1.1.so
   ?? () from /usr/lib/pulse-1.1/modules/module-alsa-card.so
  Title: pulseaudio crashed with SIGABRT in raise()
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
  dmi.bios.date: 08/28/2008
  dmi.bios.vendor: TOSHIBA
  dmi.bios.version: V2.60
  dmi.board.name: ISKAA
  dmi.board.vendor: TOSHIBA
  dmi.board.version: 1.00
  dmi.chassis.asset.tag: *
  dmi.chassis.type: 10
  dmi.chassis.vendor: TOSHIBA
  dmi.chassis.version: N/A
  dmi.modalias: 
dmi:bvnTOSHIBA:bvrV2.60:bd08/28/2008:svnTOSHIBA:pn*:pvr*:rvnTOSHIBA:rnISKAA:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
  dmi.product.name: *
  dmi.product.version: *
  dmi.sys.vendor: TOSHIBA

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