Public bug reported:

There is no audio output device in the settings. If i put on headphones
it automatically goes to mute and still no output showing in settings. I
don't know what went wrong I tried to use bluetooth headphones and
installed pulseaudio because of it and after a lot of trying couldn't
get it to work so uninstalled it and after that this issue popped up.
Thanks in advance for the help.

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', 
'/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D10p', 
'/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', 
'/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', 
'/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: ubuntu:GNOME
Date: Wed Nov  1 08:33:49 2017
InstallationDate: Installed on 2017-06-11 (142 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
PackageArchitecture: all
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
SourcePackage: alsa-driver
Symptom: audio
UpgradeStatus: Upgraded to artful on 2017-10-20 (11 days ago)
dmi.bios.date: 05/17/2016
dmi.bios.vendor: Insyde
dmi.bios.version: F.21
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 8136
dmi.board.vendor: HP
dmi.board.version: 31.38
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: 
dmi:bvnInsyde:bvrF.21:bd05/17/2016:svnHP:pnHPNotebook:pvrType1ProductConfigId:rvnHP:rn8136:rvr31.38:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP
dmi.product.name: HP Notebook
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug artful wayland-session

** Attachment added: "error.png"
   https://bugs.launchpad.net/bugs/1729184/+attachment/5001542/+files/error.png

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https://bugs.launchpad.net/bugs/1729184

Title:
  audio output not showing in settings

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