Stuff
public text v1 · immutabletuedel@tuedel-o-mat:~$ speaker-test -c2 -Dplug:ch51dup -twav
speaker-test 1.0.14rc2
Playback device is plug:ch51dup
Stream parameters are 48000Hz, S16_LE, 2 channels
WAV file(s)
ALSA lib pcm_params.c:2152:(snd_pcm_hw_refine_slave) Slave PCM not usable
Broken configuration for playback: no configurations available: Invalid argument
Setting of hwparams failed: Invalid argument