On Mon, 1 Feb 2016 10:26:07 +0100, Kjetil Matheussen wrote:
>What I was replying to in this thread, was if you want run a DAW, you
>very often only want to run one client, and then you don't need to
>start jackd and qjackctl.

Assumed the DAW requires jackd, as e.g. Qtractor does, then there's the
need to run jackd. However, it's not important for the user, since
Qtractor automatically will start jackd, if it isn't already running.
Indeed, we don't have to launch jackd, but the DAW needs to launch it.
Following audio related Linux mailing lists I doubt that "very often" is
correct. My impression is, that more often people use a DAW not only
with plugins, but with additional software that requires audio and MIDI
sync.