No Audio After Using Jack
I suspect / hope I'm missing something really newbish.
I'm running Ubuntu Studio 12.04. My normal audio usually works fine. I can watch YouTube videos in Firefox, play videos or music in VLC, etc., without difficulties.
However, if I start the JACK server, either by running QjackCtl or by starting an application that autostarts it, I can't get regular, non-JACK audio back afterward. Stopping and quitting the JACK server, logging out and back in, and ending and restarting my session don't work. The only way I can get "regular" audio back after using JACK is to restart the computer.
How do I get JACK to relinquish control of my system audio when I'm done with it?
Do your desktop programs expect Pulseaudio, and is it running after you start JACK?
I only recently installed Pulseaudio, and had to make a modification in how QJackCtl starts JACK to get JACK to work at all without killing Pulseaudio.
I've never used Ubuntu Studio, but the docs say it usually runs Pulseaudio. I might be reading them wrong.
My non-JACK apps do indeed appear to use Pulseaudio (I had no idea until I started digging, at Headrift's suggestion), which JACK was stopping. Starting Pulseaudio back up from the command line ($ pulseaudio --start) after I'm done with JACK gets it going again.
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