Last year, I wrote a post about using linux and JACK to delay baseball radio broadcasts by 7 seconds in order to bring it into sync with the TV broadcast. Well, today’s broadcast is on FOX, so that provided all the encouragement I needed to get my setup working again. I have since upgraded my laptop, so I was expecting to spend another seven innings getting JACK to work again.
Luckily it was much easier this year. All I had to do was start JACK like this:
pasuspender qjackctl
On modern versions of linux, there’s a system program called “pulseaudio” that normally takes care of all the sound on the system. JACK isn’t compatible with pulseaudio, so it’s necessary to disable pulseaudio while jack is running. Thankfully there’s a little program called “pasuspender” that disables pulseaudio while a specified program is running. So the command above disables pulseaudio while jack is running.
After that, I just had to reproduce the various connections in the screenshot I posted and it all worked. No special kernels, no editing of security files. Phew.