alsa alsactl amixer aplayfind sound cards
cat /proc/asound/cardslist devices in more detail
aplay -lspecify alsa default device in /etc/asound.conf
defaults.pcm.card 1 defaults.ctl.card 1apply changes to alsa config
sudo alsa reload
https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#Set_the_default_sound_card