Hello Jim,

Thank you for taking the time to open this bug report.  Unfortunately,
there is not enough information for us to look into this at this point
in time.

Please run the command "apport-collect 2078725" to include the relevant
logs, and system information and we will look at it.

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => Philip Cox (philcox)

** Changed in: linux (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/2078725

Title:
  24.04.1 LTS useless as a stratum 1 ntp server

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I have a machine with a serial attached precision reference clock with
  a pps accuracy of +/- 1 nanosecond that I have been using as a stratum
  1 ntp server for years.

  Upon upgrading from 22.04.4 LTS to 24.04.1 LTS ntp went insane.

  ntpq -p shows:

  xNMEA(0)         .PPS.            0 l   12   16  377   0.0000 -96.8229
  0.5427

  Previously that 'x', which means the source is being rejected, was
  'o', which means the source has pps, and the offset, which now shows
  as -96 milliseconds was under 1 millisecond.

  From syslog:

  ntpd[10299]: REFCLOCK: refclock_params: kernel PLL (hardpps, RFC 1589) not 
implemented
  ntpd[10299]: REFCLOCK: NMEA(0) set PPSAPI params fails

  It appears that the ppsapi has not been implemented in 24.04.1 LTS
  which makes it useless as a stratum 1 ntp server.

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