[LinuxPPS] ntp-dev-4.2.5p237-RC does sync with PPS for me

[William S. Brasher]

Well, after a number of hours, the development version of ntpd rejects 
both the PPS and the NMEA clock drivers, and syncs instead with another 
machine.  It seems that the clock drivers "see" the PPS signal, and that 
the NMEA driver receives the NMEA sentence, which it logs to the stats 
file. 

At the moment I am at a loss, and am obviously missing something.  
Looks like it is time to think about it for a while :)


bill at tara: $ ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
xGPS_NMEA(0)     .GPS.            0 l    7   16  377    0.000    0.004   0.003
xPPS(0)          .PPS.            0 l    7   16  377    0.000    0.004   0.003
*chronos         .PPS.            1 u   32   64  377    0.215    0.029   0.019


bill at tara: $ ntpq -crv
associd=0 status=0628 leap_none, sync_ntp, 2 events, no_sys_peer,
version="ntpd 4.2.5p237-RC at 1.2076-o Mon Oct 26 15:35:19 UTC 2009 (1)",
processor="i686", system="Linux/2.6.31.4-pps", leap=00, stratum=2,
precision=-19, rootdelay=0.215, rootdisp=4.254, refid=192.168.48.2,
reftime=ce9091df.188ff878  Mon, Oct 26 2009 16:23:43.095,
clock=ce909221.0a51d36d  Mon, Oct 26 2009 16:24:49.040, peer=41845,
tc=6, mintc=3, offset=0.029, frequency=1.036, sys_jitter=0.019,
clk_jitter=0.000, clk_wander=0.140