Re: [chrony-users] Issue with RTC and PPS

Ok it seems that using the SHM 1 without the lock works. I will turn it off tonight and I will check again tomorrow morning to be sure

----------------------------------------------------------------------------------

Dr. Gabriele Coppi

Marie Curie Skłodowska Fellow,

Department of Physics, Università degli Studi Milano-Bicocca

https://gabrielecoppi.github.io/

Phone Number: +39 0264482356

On Mon, Nov 14, 2022 at 4:33 PM Miroslav Lichvar <mlichvar@xxxxxxxxxx> wrote:

On Mon, Nov 14, 2022 at 04:23:01PM +0100, Gabriele Coppi wrote:
> Now I have the following problems, when I shutdown/reboot the RPi:
>
>
> 1. it seems that chrony never selects the PPS source, and given that GPS
> is marked as noselect, I don't have any GPS timing

If you remove the lock option and add an NTP server (temporarily),
does PPS work?

Have you tried SHM 1 or SOCK, assuming you use gpsd?

> 2. any RTC support is outside chrony, but as said I would like to track
> it with chrony

chronyd relies on RTC_UIE_ON, but maybe hwclock could work. It has the
--adjust option.

> I specify that chrony is run as daemon at startup with the -s flag

Without rtcfile that probably doesn't do anything useful.

--
Miroslav Lichvar

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