sound out on Dell studio XPS

I bought some nice boxes so as to be able to have nicer sound for the radio stations I listen to, but look, the headphone out jack of my dell studio xps is not working in Kubuntu 10.04!

Apparently the default for sound is using the bios configuration, and as I see no sound option in the bios that means I cannot repear the error there. All info to fix it is on the ubuntu community wiki.

So, for this laptop, fire up eg Kinfocenter, and see under sound:

Audio devices:
0: STAC92xx Analog (Duplex)

Mixers:
0: IDT 92HD73C1X5

Looking at the HD audio models documention, we see

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 as said, the BIOS setting is the default. So let's change it to dell-m6:

sudo kate /etc/modprobe.d/alsa-base.conf

and add at the end of the file:

options snd-hda-intel model=dell-m6

Reboot, and yes, sound is available on one of the headphone out jacks. The above line is also what is listed on the forum. Should you know how to make both headphone out to work, let me know.