Thank yoy all for educating me!
Qjackctl is just a GUI. Not needed necerrary. However, Qjackctl takes
care of Jack connections and offers a way to write a patchbey script to
make connections permanent.
But I was totally wrong: Qjackctl works well in my system, but what
fails is Jack. Starting Jack in terminal:
|jackd -d alsa -d hw:0|
does not start jack either.
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server
I am totally confused.
Jack woul’nt start:
Ubuntu 20.04, HP Envy x360 laptop, IntelCorp Cannon point-LP audio
Jack starts normally:
Ubuntu 18.04. HP Envy x360 laptop, IntelCorp Sunrise point-LP audio
Ubuntu 20.04, Dell 17.3" Inspiron 17-3721
Installed latest Kernel 5.6.11 to problem HP. No luck. Jack still not
starts.
Cannot use Yoshimi in this Cannon point-LP audio HP laptop, as Jack
refuses to co-operate.