I had the same difficulty. No sound cards were available according to
I found somewhere (I forget where) the suggestion to add to
and from then everything went swimmingly. I set up some (possibly pretty dangerous) values in
### realtime permission for audio @audio – rtprio 99 @audio – memlock unlimited @audio – nice -10 @audio - priority 8 # End of file
The audio priority of 8 seems to be necessary to stop annoying messages in the puredata console when it's started. I'm not an expert on these values, they might not be wise, safe or ideal but they worked for me.
And I made sure that my user is in the audio group:
usermod -a -G audio david
And I've had glitch free performance since out of the mini jack.