On Sun, July 9, 2017 13:37, alex wrote:
Failed to connect to session bus for device
reservation Unable to
autolaunch a dbus-daemon without a $DISPLAY$
The following seems to happen: when
you start jackd manually, you
already have a graphical environment providing $DISPLAY which is
again used by dbus. When you start jackd during boot, it will fail
if there is no graphical environment started yet.
That's the culprit :). Forget my _wrong_ assumption about something
else grabbing the device.