[Realtek ALC880] ALSA test tone not correctly played back

[yashas]

please find me a solution

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: alsa-base 1.0.22.1+dfsg-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-24.43-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-24-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC880 Analog [ALC880 Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: administrator 1324 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 16'
   Mixer name : 'Realtek ALC880'
   Components : 'HDA:10ec0880,10430000,00100800'
   Controls : 29
   Simple ctrls : 17
Date: Sun Sep 19 22:57:10 2010
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SelectedCard: 0 Intel HDA-Intel - HDA Intel
SourcePackage: alsa-driver
Symptom: audio
Title: [Realtek ALC880] ALSA test tone not correctly played back
dmi.bios.date: 12/16/2005
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS P5GD2-TVM/GB/SI ACPI BIOS Revision 0302
dmi.board.name: P5GD2-TVM/GB/SI
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: 280119718606lncfiodtlssmytehs
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSP5GD2-TVM/GB/SIACPIBIOSRevision0302:bd12/16/2005:svnHCLInfosystemsLimited:pnLakshya2-LD:pvr1.XX:rvnASUSTeKComputerINC.:rnP5GD2-TVM/GB/SI:rvr1.XX:cvn280119718606lncfiodtlssmytehs:ct3:cvrChassisVersion:
dmi.product.name: Lakshya2-LD
dmi.product.version: 1.XX
dmi.sys.vendor: HCL Infosystems Limited