Default Sound Card

I installed ALSA for a new Arch setup, but the default sound card is set to HDMI with S/PDIF displayed in the middle of the alsamixer screen.

Arch Wiki on ALSA says to define something like

(in /etc/modprobe.d/alsa-base.conf)
options snd_mia index=0
options snd_hda_intel index=1

Except that when I cat /proc/asound/modules to get the names, they're both snd_hda_intel for both HDMI and speakers/headphone jack.

Solution!

Source

You can inspect /proc/asound with ls -l to find the proper module ids, ie SB/HDMI. Then you can use the id attribute:

(in /etc/modprobe.d/alsa-base.conf)
options snd-hda-intel id=SB index=0
options snd-hda-intel id=HDMI index=1