Setting the default device sound card alsa/pulsausio/pipewire on gnu/linux

asound.conf

## check available sound card that attached to your system.
# cat /proc/asound/cards
## or better check card name to use insted of card number.
# cat /sys/class/sound/card*/id
## guide https://wiki.gentoo.org/wiki/ALSA#.7E.2F.asoundrc

# verification used driver
LANG=C pactl info | grep "Server Name"

# add user to audio group
gpasswd -a xmawja audio

## Setting the default device
## change th number 0 to your sound card show from command above

defaults.pcm.card 0
defaults.ctl.card 0

## set the default sound card
## change th number 0 to your sound card show from command above

pcm.!default {
    type hw
    card 0
}

ctl.!default {
    type hw
    card 0
}

## create /etc/asound.conf file if not exist and replace it with this file.

## set volume control using terminal
# alsa
#amixer set 'Master' 10%+
# pipewire
#amixer -D pipewire sset Master 100%
# paulsaudio
#pactl -- set-sink-volume 0 +10%


# if using pipewire dont forget to copy configuration files
# cp /usr/share/pipewire/* /etc/pipewire/
 
# for gentoo users migration article
# https://www.gentoo.org/support/news-items/2022-07-29-pipewire-sound-server.html
# for archlinux users you must enable /etc/modprobe.d/alsa-base.conf and
################
# work well with gentoo pipewire
defaults.pcm.!card 0
defaults.pcm.!device 0

#defaults.pcm.card 2
#defaults.ctl.card 2

## set the default sound card
## change th number 0 to your sound card show from command above

pcm.!default {
    type hw
    card 2
    device 0
}

ctl.!default {
    type hw
    card 2
    device 0
}

# TROBLESOTING: check driver in use
aplay -l
lspci | grep -i audio
dmesg | grep -i snd


# copy to /etc/modprobe.d/alsa-base.conf
options snd_usb_audio index=0
options snd_bcm2835 index=1
options snd_alc892 index=2

# if some how dosn't work change it with this
# error : cannot find the slot for index 0
options snd-usb-audio index=0,1
options snd-hda-intel index=2,3