That did the trick, thank you very much. On Tuesday, May 11, 2021 13:54 CEST, Miroslav Lichvar <mlich...@redhat.com> wrote: On Tue, May 11, 2021 at 01:38:25PM +0200, Jochen Demmer wrote: > This is the config snippet: > refclock PPS /dev/pps0 lock DCF trust prefer > refclock SHM 0:perm=0644 precision 1e-1 offset 0 delay 0.55 refid NMEA trust > noselect
The sources and sourcestats reports show an offset of about 495ms, so you should specify it more like this refclock SHM 0 offset 0.5 delay 0.3 refid NMEA noselect Depending on stability of the message timing you could decrease the delay, but it doesn't really matter as long as it allows the PPS to lock. -- 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.