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.

  1. aplay -l returns aplay: device_list:270: no soundcards found...

  2. Tried removing pulseaudio and alsa, reinstalling, does nothing.

  3. Tried reconfiguring hdmi/3.5mm jack (sudo amixer cset numid=3 1), no result.

  4. Tried using inxi, no audio devices found.

  5. modprobe snd_bcm2835 returns [1948.563781] bcm2835_audio bcm2835_audio: Failed to get DT property 'brcm,pwm-channels'

  6. Tried adding dtparam=audio=on to config.txt, no result.

  7. Tried 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.

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  • Have you looked into the boot FAT partition where there are some configuration files? There you can enable or disable drivers. It might be something there you need to change. – Anders Mar 26 at 22:18
  • @Anders I have not, will try that. Thanks! – Alex A Mar 26 at 23:36

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