I’ve ran into this before with JACK, but specifically only when I also have pipewire installed and am not using pipewire-jack. Can you give us some more details about what system and configuration you are running?
It’s a Manjaro. I already fixed it, but thanks for your help anyways.
I feel a little bit dumb now. I checked the audio.conf – somehow it was not there, but in a different folder.
I really dont know, how this happened. And, how it worked all the time before installing A6.7. o.O
Could not create session in “/home/djnotes/ardour/mytrack”
—ERROR: JACK: Cannot create thread res = 1
ERROR: JACK: JackClient::AcquireSelfRealTime error
ERROR: JACK: Cannot use real-time scheduling (RR/15) (1: Operation not permitted)
And it does not solve after adding my user to audio and jack-user group and logging out. Any ideas?
OS: Fedora 33, Ardour upgraded by system from 5 to 6.9.0.
Thanks @x42 . Thanks @paul. Following Jack documentation linked by Paul, I added my current user to jackuser and audio groups that had been added before on my system. Logged out and logged in, but the issue was not solved. However, rebooting the computer did. Seems like simply logging out and re-logging does not work on all systems.
The reason for this problem was I used to work with Ardour 5 with another user (for which I had configured JACK), and I forgot to configure JACK settings when switching to a new user, and then I didn’t work with Ardour for a long time, and suddenly this came up and I wrongly assumed it was an Ardour6 issue.