I have ASUS M3N78-VM Motherboard and AMD 9550+ Motherboard, I am not getting sound. The Sound card is VIA VT Series

I have ASUS M3N78-VM Motherboard and AMD 9550+ Motherboard, I am not getting sound from both front and back panels. The Sound card is VIA VT1708. I have installed Ubuntu Karmic 9.10 x64 version.

ProblemType: Bug
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: NVidia [HDA NVidia], device 0: VT1708B Analog [VT1708B Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: siva 1534 F.... pulseaudio
 /dev/snd/pcmC0D0p: siva 1534 F...m pulseaudio
Card0.Amixer.info:
 Card hw:0 'NVidia'/'HDA NVidia at 0xfce78000 irq 20'
   Mixer name : 'Nvidia MCP78 HDMI'
   Components : 'HDA:1106e721,10438345,00100100 HDA:10de0002,10de0101,00100000'
   Controls : 38
   Simple ctrls : 19
CheckboxCommand: alsa_record_playback
CheckboxTest: alsa_record_playback_alternates
Date: Thu Oct 22 13:50:15 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: alsa-base 1.0.20+dfsg-1ubuntu4
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_IN
ProcVersionSignature: Ubuntu 2.6.31-11.36-generic
SourcePackage: alsa-driver
Tags: checkbox-bug
Uname: Linux 2.6.31-11-generic x86_64