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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] Integrating chrony with gpsd
- From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
- Date: Mon, 14 Dec 2020 11:12:16 +0100
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On Sat, Dec 12, 2020 at 11:25:12AM +0000, Ben Barker wrote:
> MS Name/IP address Stratum Poll Reach LastRx Last sample
> ===============================================================================
> #? NMEA 0 4 0 - +0ns[ +0ns] +/- 0ns
>
>
> If I am correct, then the "?" means chronyd can not connect to gpsd...?
It means it is not getting any samples from gpsd in the SHM segment.
> This test was carried out when the GPS had no fix - should I expect chronyd
> to get time successfully in the absence of a GPS fix in this scenario
> (since the NMEA strings do still contain time thanks to the RTC)....or is
> there some other issue I am missing?
gpsd should not send any samples to SHM if the GPS has no fix. You can
use the ntpshmmon utility from gpsd to confirm that.
--
Miroslav Lichvar
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