Here's my related experience (and solution!) with Ubuntu Jaunty and an HDA-Intel card on an HP DV5-1125ca (AMD processor) laptop.
Sound output was working, but I was not able to use the microphone, neither with sound recorder, Skype, or Cheese. Solution in my case was to add this line to /etc/modprobe.d/alsa-base.conf and reboot after:
options snd-hda-intel model=hp-dv5
(if you're on an HP DV4, this line might work: options snd-hda-intel model=model=hp-m4)
Here's my related experience (and solution!) with Ubuntu Jaunty and an HDA-Intel card on an HP DV5-1125ca (AMD processor) laptop.
Sound output was working, but I was not able to use the microphone, neither with sound recorder, Skype, or Cheese. Solution in my case was to add this line to /etc/modprobe. d/alsa- base.conf and reboot after:
options snd-hda-intel model=hp-dv5
(if you're on an HP DV4, this line might work: options snd-hda-intel model=model=hp-m4)
See this thread for more info: http:// bugzilla. kernel. org/show_ bug.cgi? id=12440