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 -- To unsubscribe email chrony-users-requ...@chrony.tuxfamily.org with "unsubscribe" in the subject. For help email chrony-users-requ...@chrony.tuxfamily.org with "help" in the subject. Trouble? Email listmas...@chrony.tuxfamily.org.