*** This bug is a duplicate of bug 1663528 ***
    https://bugs.launchpad.net/bugs/1663528

Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1663528, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.


** This bug has been marked a duplicate of bug 1663528
   pulseaudio assert failure: pulseaudio: mixer.c:929: 
snd_mixer_elem_get_callback_private: Assertion `mixer' failed.

** Information type changed from Private to Public

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https://bugs.launchpad.net/bugs/1723641

Title:
  pulseaudio assert failure: pulseaudio: mixer.c :929 :
  snd_mixer_elem_get_callback_private:  l'assertion « mixer » a échoué.

Status in pulseaudio package in Ubuntu:
  New

Bug description:
  Happens at each start of the graphical (xorg apparently not wayland
  because of nvidia despite KMS at boot).

  ProblemType: Crash
  DistroRelease: Ubuntu 17.10
  Package: pulseaudio 1:10.0-2ubuntu3
  ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
  Uname: Linux 4.13.0-12-generic x86_64
  NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
  ApportVersion: 2.20.7-0ubuntu3
  Architecture: amd64
  AssertionMessage: pulseaudio: mixer.c :929 : 
snd_mixer_elem_get_callback_private:  l'assertion « mixer » a échoué.
  CrashCounter: 1
  Date: Tue Oct 10 08:33:43 2017
  ExecutablePath: /usr/bin/pulseaudio
  InstallationDate: Installed on 2017-06-18 (118 days ago)
  InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
  ProcCmdline: /usr/bin/pulseaudio --start --log-target=syslog
  ProcEnviron:
   LANG=fr_FR.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/false
   XDG_RUNTIME_DIR=<set>
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
  Signal: 6
  SourcePackage: pulseaudio
  StacktraceTop:
   __assert_fail_base (fmt=<optimized out>, 
assertion=assertion@entry=0x7fefdaa1f188 "mixer", 
file=file@entry=0x7fefdaa1f419 "mixer.c", line=line@entry=929, 
function=function@entry=0x7fefdaa1f6a0 "snd_mixer_elem_get_callback_private") 
at assert.c:92
   __GI___assert_fail (assertion=0x7fefdaa1f188 "mixer", file=0x7fefdaa1f419 
"mixer.c", line=929, function=0x7fefdaa1f6a0 
"snd_mixer_elem_get_callback_private") at assert.c:101
   snd_mixer_elem_get_callback_private () from 
/usr/lib/x86_64-linux-gnu/libasound.so.2
   ?? () from /usr/lib/pulse-10.0/modules/module-alsa-card.so
   ?? () from /usr/lib/pulse-10.0/modules/module-alsa-card.so
  Title: pulseaudio assert failure: pulseaudio: mixer.c :929 : 
snd_mixer_elem_get_callback_private:  l'assertion « mixer » a échoué.
  UpgradeStatus: Upgraded to artful on 2017-09-03 (41 days ago)
  UserGroups:
   
  dmi.bios.date: 09/08/2017
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 0902
  dmi.board.asset.tag: Default string
  dmi.board.name: PRIME X370-PRO
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: Rev X.0x
  dmi.chassis.asset.tag: Default string
  dmi.chassis.type: 3
  dmi.chassis.vendor: Default string
  dmi.chassis.version: Default string
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvr0902:bd09/08/2017:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX370-PRO:rvrRevX.0x:cvnDefaultstring:ct3:cvrDefaultstring:
  dmi.product.family: To be filled by O.E.M.
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer

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