are your user id belong "audio" group?
drwxr-xr-x 2 root root 80 Oct 4 17:28 by-path crw-rw---T+ 1 root audio 116, 5 Oct 4 17:28 controlC0 crw-rw---T+ 1 root audio 116, 8 Oct 4 17:28 controlC1 crw-rw---T+ 1 root audio 116, 4 Oct 4 17:28 hwC0D0 crw-rw---T+ 1 root audio 116, 7 Oct 4 17:28 hwC1D0 crw-rw---T+ 1 root audio 116, 3 Oct 4 17:28 pcmC0D0c crw-rw---T+ 1 root audio 116, 2 Oct 4 18:15 pcmC0D0p crw-rw---T+ 1 root audio 116, 6 Oct 4 17:28 pcmC1D3p crw-rw---T+ 1 root audio 116, 1 Oct 4 17:28 seq crw-rw---T+ 1 root audio 116, 33 Oct 4 17: timer -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1061583 Title: microphone was not working tried to fix it with limited knowledge and now no sound Status in “pulseaudio” package in Ubuntu: Incomplete Bug description: attached detailed report ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28 Uname: Linux 3.2.0-31-generic x86_64 NonfreeKernelModules: wl fglrx AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu13 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Card hw:0 'SB'/'HDA ATI SB at 0xfbbf4000 irq 16' Mixer name : 'Realtek ALC269VB' Components : 'HDA:10ec0269,1043841c,00100100' Controls : 16 Simple ctrls : 9 Card1.Amixer.info: Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbde8000 irq 19' Mixer name : 'ATI RS690/780 HDMI' Components : 'HDA:1002791a,00791a00,00100000' Controls : 4 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Thu Oct 4 18:16:21 2012 InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1) PackageArchitecture: all ProcEnviron: LANGUAGE=en_IN:en TERM=xterm PATH=(custom, no user) 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: alsa-driver Symptom: audio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/27/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0304 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: 1215T dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: x.xx dmi.chassis.asset.tag: 0x00000000 dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer INC. dmi.chassis.version: x.x dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0304:bd09/27/2010:svnASUSTeKComputerINC.:pn1215T:pvrx.x:rvnASUSTeKComputerINC.:rn1215T:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x: dmi.product.name: 1215T dmi.product.version: x.x dmi.sys.vendor: ASUSTeK Computer INC. mtime.conffile..etc.modprobe.d.alsa.base.conf: 2012-10-03T20:30:57.984538 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1061583/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp