gentoo dell adamo sound issues

so i recently got my hands on an adamo 13″ black and decided to put gentoo on it. pretty straight forward.

after everything was installed i wanted to play some music through the headphones, and no sound came out..

so after a little googling this is what resulted :
cat /proc/asound/card0/codec#0 | egrep Codec
which gave me :
Codec: IDT 92HD73C1X5

weird…. i would have figured that an intel hd would be straight forward.

so after getting the codec i referenced kernel.org’s HD audio documentation and did a grep for “92HD73” which lead me to this section:

STAC92HD73*
===========
  ref		Reference board
  no-jd		BIOS setup but without jack-detection
  intel		Intel DG45* mobos
  dell-m6-amic	Dell desktops/laptops with analog mics
  dell-m6-dmic	Dell desktops/laptops with digital mics
  dell-m6	Dell desktops/laptops with both type of mics
  dell-eq	Dell desktops/laptops
  alienware	Alienware M17x
  auto		BIOS setup (default)

so i added:
options snd-hda-intel model=dell-m6 to the end of /etc/modprobe.d/alsa.conf.

rebooted…and confirmed working….

kernel config for 3.3.4