I am trying to set up OP25 on a Raspberry Pi 3 B running a Ubuntu 18.04 LTS (lubuntu-core desktop). The software installs fine, however I cannot get any sound out of the Pi, via HDMI or from the analog output. Here's what I have tried.
aplay: device_list:270: no soundcards found...
alsa, reinstalling, does nothing.
Tried reconfiguring hdmi/3.5mm jack (
sudo amixer cset numid=3 1), no result.
inxi, no audio devices found.
[1948.563781] bcm2835_audio bcm2835_audio: Failed to get DT property 'brcm,pwm-channels'
dtparam=audio=onto config.txt, no result.
speaker-test, no result.
The Pi itself is not defective, when I installed Ubuntu MATE the sound worked fine. My preference is to have the server running lubuntu-core, as I only need minimal features.
Any advice will be much appreciated.