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[Robocat <cdrcat@xxxxxxxxx>]

This answer fixed the problem for me:
http://askubuntu.com/a/139567/340336

Open: /etc/modprobe.d/alsa-base.conf

And add this line to the bottom:

options snd-hda-intel model=generic

Then, restart the computer.

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https://bugs.launchpad.net/bugs/703464

Title:
  ubuntu 10.04 no sound with intel hd audio card - Intel Corporation 5
  Series/3400 Series Chipset High Definition Audio (rev 06)

Status in alsa-driver package in Ubuntu:
  New

Bug description:
  Hi

  I don't get any sound after installing Ubuntu version.

  Description:	Ubuntu 10.04.1 LTS
  Release:	10.04

  
  for my inbuilt sound card which lspci and asound shows as follows:

  lspci | grep -i audio
  00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)

  cat /proc/asound/cards 
   0 [Intel          ]: HDA-Intel - HDA Intel
                        HDA Intel at 0xfbff8000 irq 22

  
  This works well with Windows XP after installing the driver from the CD given by the motherboard manufacturer.

  The gnome sound preferences is not muted and shows the card as Intel
  internal audio.

  I tried increasing the volume levels in the sound preferences and
  selecting different Audio Profiles (Eg: Stereo Duplex etc)

  but I dont get any sound.

  I have this kernel:
  uname -ar
  Linux i5 2.6.32-27-generic #49-Ubuntu SMP Wed Dec 1 23:52:12 UTC 2010 i686 GNU/Linux

  
  Here are the modules that are loaded:

  snd_hda_codec_realtek   203344  1 
  snd_hda_intel          22005  0 
  snd_hda_codec          74201  2 snd_hda_codec_realtek,snd_hda_intel
  snd_hwdep               5412  1 snd_hda_codec
  snd_pcm_oss            35308  0 
  snd_mixer_oss          13746  1 snd_pcm_oss
  snd_pcm                70694  3 snd_hda_intel,snd_hda_codec,snd_pcm_oss
  snd_seq_dummy           1338  0 
  snd_seq_oss            26722  0 
  snd_seq_midi            4557  0 
  snd_rawmidi            19056  1 snd_seq_midi
  snd_seq_midi_event      6003  2 snd_seq_oss,snd_seq_midi
  snd_seq                47263  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
  snd_timer              19098  2 snd_pcm,snd_seq
  snd_seq_device          5700  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
  snd                    54180  12 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
  soundcore               6620  1 snd
  snd_page_alloc          7076  2 snd_hda_intel,snd_pcm

  
  Please help

  Thanks

  Srimal.

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