[P52F, Conexant CX20585, Speaker, Internal] No sound at all

No sound detected in my laptop.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kapil 1401 F.... pulseaudio
                      kapil 2325 F.... TeamViewer.exe
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd5400000 irq 42'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:14f15069,104311f3,00100302 HDA:80862804,80860101,00100000'
   Controls : 14
   Simple ctrls : 11
Date: Sun Jun 19 22:52:57 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_IN:en
 LANG=en_IN
 LC_MESSAGES=en_IN.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed
Symptom_Card: Internal Audio - HDA Intel
Symptom_DevicesInUse: 1401 2325 kapil F.... TeamViewer.exe
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [P52F, Conexant CX20585, Speaker, Internal] No sound at all
UpgradeStatus: Upgraded to natty on 2011-06-03 (15 days ago)
dmi.bios.date: 12/10/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P52F.204
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: P52F
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP52F.204:bd12/10/2010:svnASUSTeKComputerInc.:pnP52F:pvr1.0:rvnASUSTeKComputerInc.:rnP52F:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: P52F
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.