Public bug reported:

my laptop volume is mute. and it didn't unmute whatever i do.
in bug report it says- pulseaudio crashed.
ubuntu 14.04 LTS

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11.1
ProcVersionSignature: Ubuntu 3.13.0-135.184-generic 3.13.11-ckt39
Uname: Linux 3.13.0-135-generic i686
ApportVersion: 2.14.1-0ubuntu3.27
Architecture: i386
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', 
'/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', 
'/dev/snd/pcmC1D0p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', 
'/dev/snd/pcmC0D3p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: Unity
Date: Sat Nov 25 01:01:25 2017
InstallationDate: Installed on 2016-09-15 (435 days ago)
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release i386 
(20140807.1)
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No 
PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: Upgraded to trusty on 2017-09-10 (74 days ago)
dmi.bios.date: 09/05/2013
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68CPE Ver. F.21
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 1950
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 91.0B
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: 
dmi:bvnHewlett-Packard:bvr68CPEVer.F.21:bd09/05/2013:svnHewlett-Packard:pnHPProBook445G1:pvrA2018CD200:rvnHewlett-Packard:rn1950:rvrKBCVersion91.0B:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 445 G1
dmi.product.version: A2018CD200
dmi.sys.vendor: Hewlett-Packard

** Affects: pulseaudio (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 trusty

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https://bugs.launchpad.net/bugs/1734384

Title:
  no audio

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