… for any libardour based command-line tool (ardour6-export, ardour6-copy-mixer) and various backend audio systems on Fedora 33. Ardour version 6.3.
When I open a session, play, record, … work with the configured audio system, everything is fine. But when closing the session/ quitting Ardour and calling ardour6-copy-mixer or ardour6-export from command line, an error message “Cannot create Audio/MIDI engine” pops up and the tool ends immediately. This holds for multiple backend systems. I’ve tried JACK, Pulseaudio, and ALSA without any change in behaviour. No issue in GUI, but “Cannot create Autio/MIDI engine” for any of the mentioned headless tools.
Starting up jackd external (keeping it up running) doesn’t make a difference either.
Is this a know problem? Anything obviously wrong with my configuration? Any other idea what’s going on?