Ardour 5: "could not create session"

Max, have you made sure to reboot, or at least log out/in, after changing the rtprio in /etc/security/limits.d/audio.conf ?

What happens if you run ulimit -r ; does it say 95?

1 Like

I had not changed limits.d, as it already was set up correctly.
however, I restarted anyway and it works now, no idea what was going on.
ulimit -r says 95

Ahh changes to PAM (The changes to limits.d you looked at) require at the least a logout/login to take affect. This was likely done by a package you installed if you did not do it yourself, but it was still a change from the default.

A reboot is just more thorough. So if you hadn’t done that yet that would explain exactly what you were seeing.