New comment by jrigg on void-packages repository

https://github.com/void-linux/void-packages/issues/20051#issuecomment-598883168

Comment:
What happens if you do
`export JACK_NO_AUDIO_RESERVATION=TRUE`
before starting jackd? That disables jackdbus and runs plain jackd.

I have the above set permanently in .bashrc and jackd has always worked properly with realtime priority on my Void system.  I didn't have to do any special configuration apart from setting that environment variable.