I’ve been trying to re-enable the build-in sound device of the RPi 3b+. However I had no luck, the card does not show up in the “aplay -l” and the sound device does not show up in “cat /proc/asound/cards/”. How can I enable it?
The quality has improved according to http://wiki.zynthian.org/index.php/Configuring_Audio_Devices. But unfortunately adding “audio_pwm_mode=2” to /boot/config.txt does not work.
The sound device works perfectly fine with the current Raspbian image (2018-06-27-raspbian-stretch.img) and has low-latency for e.g. in ZynAddSubFX. So I would really like to give Zynthian a try.
To be clear: I dit not manage to enable the on-board soundcard. I was under the impression that is was explicitly disabled so my question is:
How can I re-enable the on-board sound device in the Zynthian image?