Build Error on Ubuntu 19.10

Hello.

New to Linux, installed Ubuntu 19.10.
Tried to build SC several times (each time starting anew), both from git repo and .tar, following instructions found at:

Also tried the

In all cases, I get no errors running the configuration cmake …, build seems to proceed smoothly but when I run
s.boot:

I get:

could not initialize audio.
Server ‘localhost’ exited with exit code 0.

Any ideas what I am doing wrong?

Thanks!

Is jackaudio server running?

Hi Victor, I thought jackd2 was installed already as it’s part of the preliminaries on the Supercollider build from source procedure. However, when I tried to add username to group audio, it turned out it was not.
I apt-get installed jackd2 and all is in order. Thanks for replying. Closing this.