/usr/share/alsa/pcm/default.conf is in libasound2-data 1.0.28-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Default output
#
pcm.!default {
@args [ CARD ]
@args.CARD {
type string
default {
@func getenv
vars [
ALSA_PCM_CARD
ALSA_CARD
]
default {
@func refer
name defaults.pcm.card
}
}
}
type empty
slave.pcm {
# use card-specific definition if exists
@func refer
name {
@func concat
strings [
"cards."
{
@func card_driver
card $CARD
}
".pcm.default:CARD=" $CARD
]
}
default {
# use plughw as default
type plug
slave.pcm {
type hw
card $CARD
}
hint.device 0
}
}
hint {
description "Default Audio Device"
device_output {
@func refer
name defaults.pcm.dmix.device
}
device_input {
@func refer
name defaults.pcm.dsnoop.device
}
}
}
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