[ntp:questions] NTP not seeing servers with a 2-year offset, stand alone configuration

David Taylor davidtaylor at writeme.com
Sat Jan 9 11:18:14 UTC 2021


NTP doesn't work as expected when using PPS and GPSD alone, when there
is a very large offset (2 years) between the host date/time (Raspberry
Pi) and the GPS date/time.  PPS and GPSD appear to be present (using
"ppstest" and "ps-e | grep gpsd", and the ntpq display shows the PPS and
GPS servers but with zero reach.  This is with the Wi-Fi blocked on the
RPi.

There is a physical hardware clock on that system, which works correctly
when the Wi-Fi is unblocked, but sometimes shows a data in February 2019
with the Wi-Fi blocked.

The same system works correctly otherwise when unblocked.  Even the
HWCLOCK can be set and read.

Does this ring any bells with anyone?

Thanks,
David
--
SatSignal Software - Quality software for you
Web: https://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk
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