[LinuxPPS] ntp update
William S. Brasher
billb958 at door.net
Mon Oct 26 15:38:26 CET 2009
On Mon, 26 Oct 2009, Udo van den Heuvel wrote:
> On 2009-10-26 05:19, William S. Brasher wrote:
> >> Yay!!!
> >>
> >> https://support.ntp.org/bugs/show_bug.cgi?id=610#c84
> >
> > I have applied the patch from bugzilla to ntp-dev-4.2.5p236-RC and it does
> > not work for me. Ntpd does not sync for me even after several hours of
> > waiting. It does seem that refclock_nmea now "sees" the pps pulse, it is
> > just that ntpd won't sync to either GPS_NMEA or PPS. I haven't had a
> > chance to investigate further, so it may be ntpd is not configured
> > properly.
>
> William,
>
> Are you sure the ntpd opened both devices?
> The patch treats them slightly different from the original patch.
>
> Also the fudge behaviour of ntp-dev is different from the release
> version if I recall correctly. See the documentation on the ntp wiki for
> the NMEA refclock.
>
> Kind regards,
> Udo
>
>
I haven't had a chance yet to see what's happening; I am in the process of
fetching the latest ntp-dev-4.2.5p237-RC which has the bug 610 fix. I
will use that version to make sure the problem wasn't in how I did the
patching thing.
I have changed some things in the ntp configuration file for the
development version, such as enabling PPS in the NMEA refclock, for
example. The whole leap-second, security, encryption stuff has changed,
and I haven't changed my configuration to use it with the development
version of ntpd.
Since others are using the ntpd development version, I suspect the
problems I am having are due to an error in configuration. Now, to find
and verify that... :)
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