[Realtek ALC888] ALSA test tone not correctly played back

[Anton3234]

i am very new to Ubuntu but i like everything about it. the only problem i have is that my sound is not working. please help me out. thx.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu4
ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: rob 1521 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf4700000 irq 44'
   Mixer name : 'Intel Cantiga HDMI'
   Components : 'HDA:10ec0888,10250205,00100202 HDA:11c11040,11c10001,00100200 HDA:80862802,80860101,00100000'
   Controls : 32
   Simple ctrls : 17
CheckboxSubmission: c6502b6a29c2c42ce43056f6775d5487
CheckboxSystem: 2954e74ba17fb0e37fc942cd1d9fab4e
Date: Thu Oct 28 23:57:30 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.utf8
 SHELL=/bin/bash
SelectedCard: 0 Intel HDA-Intel - HDA Intel
SourcePackage: alsa-driver
Symptom: audio
Title: [Realtek ALC888] ALSA test tone not correctly played back
dmi.bios.date: 10/06/2009
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: V2.01
dmi.board.name: JV50
dmi.board.vendor: Acer
dmi.board.version: Rev
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV2.01:bd10/06/2009:svnAcer:pnAspire7736:pvr0100:rvnAcer:rnJV50:rvrRev:cvnAcer:ct10:cvrN/A:
dmi.product.name: Aspire 7736
dmi.product.version: 0100
dmi.sys.vendor: Acer