Problem migrating from legacy to ntpsec

[Jim Pennino]

    On Friday, September 6, 2024 at 04:10:32 PM PDT, Hal Murray <halmurray at sonic.net> wrote:  
 
 
penninojim at yahoo.com said:
>From syslog:
> ntpd[35421]: REFCLOCK: refclock_params: kernel PLL (hardpps, RFC 1589) not implemented
> ntpd[35421]: REFCLOCK: NMEA(0) set PPSAPI params fails 

The PPS stuff needs something like
  ldattach 18 /dev/ttyS0  # gets /dev/pps0
And that has to be done before ntpd gets started.
Like I said, this has been working just fine for MANY years until the os switched the ntp package from legacy to ntpsec.
Part of the configuration is, and has been for years:
ldattach -8 -n -s 9600 PPS /dev/ttyS0setserial /dev/ttyS0 low_latency


What OS/Distro are you using?
Ubuntu 24.04.1 LTS with a low latency kernel.
FYI I also changed the ntp.conf from the legacy method of psuedo ip addresses to the named method:
refclock nmea mode 16 minpoll 4 iburst time1 -0.0007 flag1 1 flag2 0 flag3 1
and it made no difference what so ever.




  
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