Ran "ubuntu-bug" inside terminal and then choosed Sound/Audio. Apport detected that pulseaudio had crashed

[pangO]

I did this, because my headphones are partially muted.
Sound is drowned and some channells are completely muted even when I turn up the volume.
So to listen to music I have to halfway plug-out the headphones plug.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: polipo 2308 F.... pulseaudio
Date: Thu Aug 28 19:45:03 2014
InstallationDate: Installed on 2013-08-02 (390 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PulseList:
 Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied
 No PulseAudio daemon running, or not running as session daemon.
SourcePackage: pulseaudio
Symptom: audio
UpgradeStatus: Upgraded to trusty on 2014-04-19 (131 days ago)
dmi.bios.date: 05/28/2007
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: 945PL-DS3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd05/28/2007:svnGigabyteTechnologyCo.,Ltd.:pn945PL-DS3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rn945PL-DS3:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: 945PL-DS3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.