aplay -L reports:
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
while aplay -l reports the card exists
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: AICA [AICA], device 0: AICA PCM [AICA PCM]
Subdevices: 1/1
Subdevice #0: subdevice #0
Here are other details:
$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.15 (Tue Nov 20
19:16:42 2007 UTC).
$ cat /proc/asound/cards
0 [AICA ]: snd_aica - AICA
Yamaha AICA Super Intelligent Sound Processor
for SEGA Dreamcast
$ cat /proc/asound/devices
0: [ 0] : control
16: [ 0- 0]: digital audio playback
33: : timer
$ ls /sys/class/sound -l
lrwxrwxrwx 1 root root 0 Jan 1 20:09 card0 ->
../../devices/platform/AICA/sound/card0
lrwxrwxrwx 1 root root 0 Jan 1 20:09 controlC0 ->
../../devices/platform/AICA/sound/card0/controlC0
lrwxrwxrwx 1 root root 0 Jan 1 20:09 pcmC0D0p ->
../../devices/platform/AICA/sound/card0/pcmC0D0p
lrwxrwxrwx 1 root root 0 Jan 1 20:09 timer ->
../../devices/virtual/sound/timer
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