[ntp:questions] pps breaks when nmea is enabled for ntpd

David Lord snews at lordynet.org
Mon Jun 17 09:27:22 UTC 2013


Richard Cagley wrote:
> On Sat, Jun 15, 2013 at 10:17 PM, David Taylor <
> david-taylor at blueyonder.co.uk.invalid> wrote:
> 
>> You know the PPS is working because the tally code changes from "*" to "o"
>> in the ntpq -p output:
> 
> After 30 min mine doesn't seem to change. If I kill ntpd and run ppstest
> again it fails. It would appear I'm back to my original question. Why does
> starting up the NMEA driver kill the pps line? (output below) I see this on
> startup. Is it significant?
> addto_syslog: refclock_ppsapi: time_pps_create: Operation not supported
> 
> / # ntpq -p
>      remote           refid      st t when poll reach   delay   offset
>  jitter
> ==============================================================================
> *GPS_NMEA(0)     .gPPS.           0 l    1   16  377    0.000   -5.956
> 2.752

When I tried with Ubuntu a few years ago I had to install
an extra package I think it was "ppskit" or similar name.


David





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