Hello,
I am trying to get sound working in FreeBSD. I read 9th chapter of FreeBSD handbook(https://docs.freebsd.org/en/books/handbook/multimedia/). I have succesfully configured the sound card, it shows in dmesg | grep pcm and also in cat /dev/sndstat. however when I try to use beep command to test the speaker, it doesn’t work ( I can’t hear anything from the sound card).
It sounds like a known problematic sound card even on Linux(?).
There is this thread that can give you hope, you might need to read this too.
I am not sure that I can be such a great helper for you mate, sorry.