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I have a HP-DV6165tx.

In 11.10 to enable the sub woofers I had added this line to the

/etc/modprobe.d/alsa-base.conf file

options snd-hda-intel model=ref

After upgrading to 12.04 I had no sound.

So I changed it to

options snd-hda-intel model=hp

I ended with hp after a lot of trial and errors looking at the

 /usr/share/doc/alsa-base/driver/HD-Audio-Models.txt.gz file

Now my speakers work but the 2 sub woofers are still not working. Any workaround to this?

share|improve this question
Try this… – alfC Aug 28 '14 at 1:11

My hp touchsmart sound is coming up using this

options snd-hda-intel model=touchsmart
share|improve this answer

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