[ICH4 - Intel ICH6, playback] No sound at all

[Bigors]

just audio interne

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: pulseaudio 1:4.0-0ubuntu11
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic i686
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bigors 1887 F.... pulseaudio
 /dev/snd/controlC1: bigors 1887 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Jan 11 14:42:36 2015
InstallationDate: Installed on 2014-05-05 (250 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417)
ProcEnviron:
 LANGUAGE=fr_FR
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: pulseaudio
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:ICH6 successful
Symptom_Card: QuickCam E2500 series - USB Device 0x46d:0x89d
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bigors 1887 F.... pulseaudio
 /dev/snd/controlC1: bigors 1887 F.... pulseaudio
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: No sound at all
Title: [ICH4 - Intel ICH6, playback] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/02/2005
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0U8082
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd10/02/2005:svnDellInc.:pnLatitudeD610:pvr:rvnDellInc.:rn0U8082:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude D610
dmi.sys.vendor: Dell Inc.