Laptop:~$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
default:CARD=Audio
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Default Audio Device
sysdefault:CARD=Audio
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Default Audio Device
dmix:CARD=Audio,DEV=0
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct sample mixing device
dmix:CARD=Audio,DEV=1
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct sample mixing device
dmix:CARD=Audio,DEV=2
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct sample mixing device
dsnoop:CARD=Audio,DEV=0
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct sample snooping device
dsnoop:CARD=Audio,DEV=1
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct sample snooping device
dsnoop:CARD=Audio,DEV=2
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct sample snooping device
hw:CARD=Audio,DEV=0
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct hardware device without any conversions
hw:CARD=Audio,DEV=1
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct hardware device without any conversions
hw:CARD=Audio,DEV=2
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Direct hardware device without any conversions
plughw:CARD=Audio,DEV=0
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Hardware device with all software conversions
plughw:CARD=Audio,DEV=1
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Hardware device with all software conversions
plughw:CARD=Audio,DEV=2
Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audio
Hardware device with all software conversions
default:CARD=bytchtnocodec
bytcht-nocodec,
Default Audio Device
sysdefault:CARD=bytchtnocodec
bytcht-nocodec,
Default Audio Device
dmix:CARD=bytchtnocodec,DEV=0
bytcht-nocodec,
Direct sample mixing device
dmix:CARD=bytchtnocodec,DEV=1
bytcht-nocodec,
Direct sample mixing device
dsnoop:CARD=bytchtnocodec,DEV=0
bytcht-nocodec,
Direct sample snooping device
dsnoop:CARD=bytchtnocodec,DEV=1
bytcht-nocodec,
Direct sample snooping device
hw:CARD=bytchtnocodec,DEV=0
bytcht-nocodec,
Direct hardware device without any conversions
hw:CARD=bytchtnocodec,DEV=1
bytcht-nocodec,
Direct hardware device without any conversions
plughw:CARD=bytchtnocodec,DEV=0
bytcht-nocodec,
Hardware device with all software conversions
plughw:CARD=bytchtnocodec,DEV=1
bytcht-nocodec,
Hardware device with all software conversions