[IDT ID 76d1] Playback problem. I am usind ubuntu 10.10 in Dell inspiron N5050. I heared the sound in Headpone but not in Speaker

[Stalin Antony]

I am usind ubuntu 10.10 in Dell inspiron N5050. I heared the sound in Headpone but not in Speaker

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.35-31.63-generic 2.6.35.13
Uname: Linux 2.6.35-31-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: HDA Generic [HDA Generic]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: stalin 1637 F.... pulseaudio
 /dev/snd/pcmC0D0p: stalin 1637 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e00000 irq 47'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:111d76d1,10280504,00100205 HDA:80862805,80860101,00100000'
   Controls : 17
   Simple ctrls : 6
Date: Wed Nov 30 20:40:45 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANG=en_IN
 SHELL=/bin/bash
SelectedCard: 0 PCH HDA-Intel - HDA Intel PCH
SourcePackage: alsa-driver
Symptom: audio
Title: [IDT ID 76d1] Playback problem
dmi.bios.date: 10/14/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: 01HXXJ
dmi.board.vendor: Dell Inc.
dmi.board.version: A03
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd10/14/2011:svnDellInc.:pnInspironN5050:pvrNotSpecified:rvnDellInc.:rn01HXXJ:rvrA03:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Inspiron N5050
dmi.product.version: Not Specified
dmi.sys.vendor: Dell Inc.