Index

alsa

command line tools
alsa
alsactl
amixer
aplay
find sound cards
cat /proc/asound/cards
list devices in more detail
aplay -l
specify alsa default device in /etc/asound.conf
defaults.pcm.card 1
defaults.ctl.card 1
apply changes to alsa config
sudo alsa reload

documentation

https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#Set_the_default_sound_card