The result was a cursor after the joy2key startup text. I could press buttons and it would display “q”, so it is reading the joystick. The thing is, it does not start the slideshow until I press Ctrl-C to break out, at which point it is not reading the stick any more.
Is there some way I could start it in a different process, and end that process before exiting the script?
Sorry to be so ignorant. I am not very experienced with Linux.