systemd gpsd does not start on boot

[Philippe Clérié <philippe@gcal.net>]

I'm running raspbian jessy on a rpi2 with an Adafruit GPS board. Gpsd 
refuses to load on boot, but works just fine on manual start.

I am not yet familiar with systemd. Even if I've had to dig a bit to try 
to understand how it works I'm still stumped at the moment, so I don't 
know if there's a bug or I am doing something wrong.

There are 3 systemd units related to gpsd in /lib/systemd/system.

gpsd.service
gpsd.socket
gpsdctl@.service

My (weak) understanding is that systemd will start .socket which in turn 
will launch .service. That does not seem to be happening.

Suggestions would be greatly appreciated.

Thanks

--
Philippe

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The trouble with common sense it that it is so uncommon.
<Anonymous>