$ aplay -L null Discard all samples (playback) or generate zero samples (capture) pulse default dmix:CARD=Audio,DEV=0 CS5535 Audio, CS5535 Audio Direct sample mixing device dsnoop:CARD=Audio,DEV=0 CS5535 Audio, CS5535 Audio Direct sample snooping device hw:CARD=Audio,DEV=0 CS5535 Audio, CS5535 Audio Direct hardware device without any conversions plughw:CARD=Audio,DEV=0 CS5535 Audio, CS5535 Audio Hardware device with all software conversions
$ aplay -L Audio,DEV= 0 CARD=Audio, DEV=0 CARD=Audio, DEV=0
null
Discard all samples (playback) or generate zero samples (capture)
pulse
default
dmix:CARD=
CS5535 Audio, CS5535 Audio
Direct sample mixing device
dsnoop:
CS5535 Audio, CS5535 Audio
Direct sample snooping device
hw:CARD=Audio,DEV=0
CS5535 Audio, CS5535 Audio
Direct hardware device without any conversions
plughw:
CS5535 Audio, CS5535 Audio
Hardware device with all software conversions