I recently purchased the Hifiberry Digi+ Pro and i plugged it in on the GPIO like it should
I added the configuration variable ‘BALENA_HOST_CONFIG_dtoverlay’ with value ‘hifiberry-digi’. I also added the environment variable ‘SOUND_OUTPUT’ with the value ‘DAC’.
However there is no sound output with the Airplay or the bluetooth input. the card is recognized with alsamixer (SSH on the audio block). i tried running ‘speaker-test -c1’ (SSH on the audio block) and no sound either.