Speakers don work under Ubuntu 9.04 in presario cq61
ICEBOX - I had exactly the same problem! But I have just fixed it after several hours of pulling my hair out. I had tried everything I could think of, as well as lots of solutions other people had suggested, including installing the latest version if Alsa from source etc. Nothing worked, until I found these four lines on another forum. Simply paste them at the end of /etc/modules.d/alsa-base.conf and save it.
options snd slots=snd-hda-intel
options snd-hda-intel model=hp-m4
alias snd-card-0 snd-hda-intel
options snd-hda-intel enable_msi=1
Restart the computer and you should get sound out of the speakers as well as the headphone socket.
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