[ntp:questions] How to get shared memory access from gpsd to ntpd to work?

Martin Burnicki martin.burnicki at burnicki.net
Wed Aug 23 11:26:05 UTC 2017


Etaoin Shrdlu wrote:
> I had to build the gpsd clients manually since this is a headless
> system, and the package in the repo depends on X (due to it including
> some Gnome apps), but I got them now and you're right ntpshmmon returns
> nothing: 
> 
> /gpsd-3.16# ./ntpshmmon
> ntpshmmon version 1
> #      Name   Seen@                Clock                Real               L Prec

I haven't worked much with gpsd and NMEA, but could the reason be that
your GPS receiver doesn't claim to be synchronized, and thus its data
isn't fed into ntpd's SHM segment?

Martin


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