| Re: [chrony-users] raspberry PPS Adafruit Ultimate GPS - rare PPS fix |
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- To: chrony-users@xxxxxxxxxxxxxxxxxxxx
- Subject: Re: [chrony-users] raspberry PPS Adafruit Ultimate GPS - rare PPS fix
- From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
- Date: Mon, 10 May 2021 09:35:13 +0200
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On Sat, May 08, 2021 at 11:05:16AM +0200, Jochen Demmer wrote:
> This is an chronyc sources when I had a recent fix:
> https://paste.debian.net/1196767/
It seems the posts expired.
> Could someone point me at what's going on?
> I understand that PPS is only being accepted under specific circumstances. Where can I read what those circumstances are and how do I see in chrony whether those are met or not and why?
Most likely, the offset of the SHM source is not set accurately enough
for the PPS to lock to it.
https://chrony.tuxfamily.org/faq.html#_using_a_pps_reference_clock
--
Miroslav Lichvar
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