[ntp:questions] NTPD 4 hours off date problem
xbntp at mailinator.com
Mon May 9 13:45:47 UTC 2005
i'm using ntp ( 4.2.0 ) with a GPS Trimble 'Acutime' antenna and the
Everything works ok, but i've the following problem :
The computer i'm using has no cmos battery, so each time it is cold
rebooted, the internal clock is set to something around 01-01-2000.
In this case, ntpd -g -q cannot set up the date correctly.
Nor can ntpd -g ...
I've gone through the source code, and found that antenna's NTP packets
are thrown out (1) because the date they contain is more than 4 hours (
CLOSETIME 4*60*60 ) off the system date ... So ntpd refuse to set the date.
Alas, this 4 hours delay check cannot be disabled using -g
I couldn't find any reasonable solution to overcome this problem.
- ntpdate ( which seems to become obsolescent ) cannot work with the
acutime ( as far as i understand )
- i've no other time reference that the Gps antenna. So i cannot set the
date even aproximatively
- i cannot come and manually set an aproximative date each time the
computer gets cold-rebooted :)
I've surely missed something, as i cannot be the only guy on earth using
NTP and a GPS antenna to set the time/date of a computer without CMOS
Thanks in advance
(1) in clocktime called by refclock_process ( clk_badtime event ).
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