Public bug reported:

I am using a Gateway laptop 7510GX. My laptop audio was working fine in Ubuntu 
10.10. When i am trying to upgrade or reinstall Ubuntu 11.04 its  removing the 
sound card driver and not installing again. So i am not able to hear sound from 
my system.
Would you help me in fixing this issue.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  janardhan   1388 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'IXP'/'ATI IXP rev 2 with Cx20468-31 at 0xc0503400, irq 17'
   Mixer name   : 'Conexant Cx20468-31'
   Components   : 'AC97a:43585430'
   Controls      : 23
   Simple ctrls  : 16
Card1.Amixer.info:
 Card hw:1 'Modem'/'ATI IXP Modem rev 2 at 0xc0503800, irq 17'
   Mixer name   : 'Conexant Cx20468-31'
   Components   : 'AC97m:43585430'
   Controls      : 2
   Simple ctrls  : 2
Card1.Codecs.codec97.0.mc97.0.0:
 0-0/0: Conexant Cx20468-31
 
 Extended modem ID: codec=0 LIN1
 Modem status     : GPIO
 Line1 rate       : 48000Hz
Date: Tue May 10 23:49:41 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:IXP failed
Symptom_Card: ATIIXP-MODEM - ATI IXP Modem
Symptom_DevicesInUse:
 1388   905   905   905/dev/snd/controlC1:  Slmodemd  F.... slmodemd
 /dev/snd/pcmC1D0c:   Slmodemd  F...m slmodemd
 /dev/snd/pcmC1D0p:   Slmodemd  F...m slmodemd
Symptom_Type: No sound at all
Title: [ATIIXP - ATI IXP, playback] No sound at all
UpgradeStatus: Upgraded to natty on 2011-05-11 (0 days ago)
dmi.bios.date: 06/15/2005
dmi.bios.vendor: Phoenix
dmi.bios.version: 66.04.00
dmi.board.name: �������������������������
dmi.board.vendor: Gateway
dmi.board.version: VER1.66.04.00
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 8
dmi.chassis.vendor: Gateway
dmi.chassis.version: N/A
dmi.modalias: 
dmi:bvnPhoenix:bvr66.04.00:bd06/15/2005:svnGateway:pn7510GX:pvr66.04.00:rvnGateway:rn:rvrVER1.66.04.00:cvnGateway:ct8:cvrN/A:
dmi.product.name: 7510GX
dmi.product.version: 66.04.00
dmi.sys.vendor: Gateway

** Affects: alsa-driver (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 natty running-unity

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https://bugs.launchpad.net/bugs/780939

Title:
  [ATIIXP - ATI IXP, playback] No sound at all

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