Re: [chrony-users] Issue with chrony dropping PPS signal

[Vincenzo Miceli <vincenzomiceli@xxxxxxxxxxx>]

Hi Miroslav, Hal,

it turns out that the GPS loses satellite fix and the PPS stops as you have predicted. I can fix that by using an active antenna with much better gain..

Is there any way for chrony to stop provide time to clients if the PPS signal is lost?

Thanks again!!

Enzo

---

From: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Sent: Thursday 4 March 2021 13:19
To: chrony-users@xxxxxxxxxxxxxxxxxxxx <chrony-users@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [chrony-users] Issue with chrony dropping PPS signal

 

On Thu, Mar 04, 2021 at 01:19:51PM +0000, Vincenzo Miceli wrote:
> Thanks Miroslav,
>
> I want to make sure I understand... you are asking to run something like watch -n 1 'cat /sys/class/pps/pps0/assert'   next time I detect the issue and see if the result is changing to indicate PPS is still being issued by the GPS right?
> I'll do that then.

Yes, or collect it in a log to not miss it, e.g. every 10 seconds, or
use the script Hal linked.

--
Miroslav Lichvar


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