Am 26.10.2015 um 17:13 schrieb Philippe Clérié: > On 10/25/2015 01:52 PM, Michael Biebl wrote: >> Am 25.10.2015 um 12:59 schrieb Philippe Clérié: >>> On 10/23/2015 05:33 PM, Philippe Clérié wrote: >>>> 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. >> >> Well, was there actually a request over the socket /var/run/gpsd.sock >> which would trigger the start of the service? >> >> If there is no such request from a client, the service will not be >> started. The maintainer of gpsd apparently has setup gpsd so it is >> started on-demand and apparently there is no demand from a client. >> > > Looks like he did half the job then. I'm pretty sure my ntp daemon works > over /run/gpsd.sock. I'm also pretty sure nothing queries gpsd over the > local tcp socket on port 2947. /var/run should be a symlink to /run. Please check that, if not, then something is wrong. How das ntp + gpsd work? Does your ntp daemon accesses actually access /run/gpsd.sock? If so it should trigger the start of gpsd.service. Also, whenever udev finds GPS hardware, it should trigger gpsdctl@.service. See /lib/udev/rules.d/60-gpsd.rules. Do you have such a gpsdctl@<device>.service instance running? The gpsdctl@.service instance in turn will run gpsdctl add /dev/<device>. gpsdctl talks to gpsd over /var/run/gpsd.socket, so will trigger the start of gpsd.service If not, maybe the udev rules file does not list your hardware and that's the root cause for this issue -- Why is it that all of the instruments seeking intelligent life in the universe are pointed away from Earth?
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