[Latitude E6400, IDT 92HD71B7X, Speaker, Internal] No sound at all

Stop suddenly the sound while playing

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1.1
ProcVersionSignature: Ubuntu 3.2.0-118.161-generic-pae 3.2.79
Uname: Linux 3.2.0-118-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu17.13
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: olivier 2402 F.... pulseaudio
 /dev/snd/pcmC0D0p: olivier 2402 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 48'
   Mixer name : 'Intel Cantiga HDMI'
   Components : 'HDA:111d76b2,10280233,00100302 HDA:80862802,80860101,00100000'
   Controls : 26
   Simple ctrls : 12
Date: Sat Dec 10 16:04:33 2016
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=fr_CH.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful
Symptom_Card: Audio interne - HDA Intel
Symptom_DevicesInUse:
 2402 2402 olivier F.... pulseaudio
 /dev/snd/pcmC0D0p: olivier F...m pulseaudio
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: No sound at all
Title: [Latitude E6400, IDT 92HD71B7X, Speaker, Internal] No sound at all
UpgradeStatus: Upgraded to precise on 2012-05-27 (1657 days ago)
dmi.bios.date: 08/19/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A27
dmi.board.name: 0HT027
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA27:bd08/19/2010:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0HT027:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6400
dmi.sys.vendor: Dell Inc.