[gpsd-users] ntpd would not synch up with gpsd

/usr/sbin/gpsd -N -n -D 7 -M 10 -i 300 /dev/ttyACM0

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: launching (Version 3.7)

Mar 12 17:28:52 gpsd[25787]: gpsd:IO: opening IPv4 socket

Mar 12 17:28:52 gpsd[25787]: gpsd:SPIN: passivesock_af() -> 4

Mar 12 17:28:52 gpsd[25787]: gpsd:IO: opening IPv6 socket

Mar 12 17:28:52 gpsd[25787]: gpsd:ERROR: can't create IPv6 socket

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: listening on port gpsd

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: NTPD shmat(0,0,0) succeeded, segment 0

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: NTPD shmat(32769,0,0) succeeded, segment 1

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: NTPD shmat(65538,0,0) succeeded, segment 2

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: NTPD shmat(98307,0,0) succeeded, segment 3

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: shmat() succeeded, segment 131076

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: shared-segment creation succeeded,

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: PPS thread launched

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: NTPD ntpd_link_activate: 1

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: stashing device /dev/ttyACM0 at slot 0

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: no etc/gpsd/device-hook present, skipped running ACTIVATE hook

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: opening GPS data source type 2 at '/dev/ttyACM0'

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: PPS Create Thread gpsd_ppsmonitor

Mar 12 17:28:52 gpsd[25787]: gpsd:PROG: PPS thread awaiting device activation

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: speed 9600, 8N1

Mar 12 17:28:52 gpsd[25787]: gpsd:SPIN: open(/dev/ttyACM0) -> 5 in gpsd_serial_open()

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: gpsd_activate(): activated GPS (fd 5)

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: device /dev/ttyACM0 activated

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: running with effective group ID 0

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: running with effective user ID 0

Mar 12 17:28:52 gpsd[25787]: gpsd:INFO: startup at 2017-03-13T00:28:52.000Z (1489364932)

tail: /var/log/messages has been replaced; following end of new file

Mar 12 17:28:52 gpsd[25787]: gpsd:DATA: packet type 1 from /dev/ttyACM0 with {ONLINE|PACKET}

Mar 12 17:28:52 gpsd[25787]: gpsd:SPIN: packet_get() fd 5 -> 207 (0)

Mar 12 17:28:52 gpsd[25787]: gpsd:RAW: /dev/ttyACM0 is known to be Generic NMEA

Mar 12 17:28:52 gpsd[25787]: gpsd:RAW: packet sniff on /dev/ttyACM0 finds type 1

Mar 12 17:28:52 gpsd[25787]: gpsd:RAW: raw packet of type 1, 55:$GPTXT,01,01,02,HW UBX-G70xx 00070000 EFFFFFFFo*1B\x0d\x0a

Mar 12 17:28:52 gpsd[25787]: gpsd:IO: <= GPS: $GPTXT,01,01,02,HW UBX-G70xx 00070000 EFFFFFFFo*1B^M

Mar 12 17:28:52 gpsd[25787]: gpsd:WARN: unknown sentence: "$GPTXT,01,01,02,HW UBX-G70xx 00070000 EFFFFFFFo*1B\x0d\x0a"

Mar 12 17:28:52 gpsd[25787]: gpsd:DATA: packet type 1 from /dev/ttyACM0 with {ONLINE|PACKET}

Mar 12 17:28:52 gpsd[25787]: gpsd:SPIN: packet_get() fd 5 -> 108 (0)

Mar 12 17:28:52 gpsd[25787]: gpsd:RAW: /dev/ttyACM0 is known to be Generic NMEA

/etc/ntp.conf

=========

# use a random selection of 4 public stratum 2 servers

# see http://twiki.ntp.org/bin/view/Servers/NTPPoolServers

pool us.pool.ntp.org iburst

driftfile /var/lib/ntp/ntp.drift

logfile /var/log/ntp.log

restrict default kod nomodify notrap nopeer noquery

restrict 127.0.0.1 mask 255.255.255.0

# GPS(NMEA)+PPS

#server 127.127.20.0 minpoll 4 prefer

#fudge 127.127.20.0 flag3 1 flag2 0

server 127.127.28.0 minpoll 4 maxpoll 4

fudge 127.127.28.0 refid GPS

server 127.127.28.1 minpoll 4 maxpoll 4 prefer

fudge 127.127.28.1 refid PPS

address@hidden:~# ntpq -p

remote refid st t when poll reach delay offset jitter

==============================================================================

segfault.boom.n .INIT. 16 u - 1024 0 0.000 0.000 0.000

up2.com .INIT. 16 u - 512 0 0.000 0.000 0.000

linode227395.st .INIT. 16 u - 1024 0 0.000 0.000 0.000

66-96-98-9.ccup .INIT. 16 u - 512 0 0.000 0.000 0.000

SHM(0) .GPS. 0 l - 16 0 0.000 0.000 0.000

SHM(1) .PPS. 0 l - 16 0 0.000 0.000 0.000

address@hidden:~#

address@hidden:~# ipcs -m

------ Shared Memory Segments --------

key shmid owner perms bytes nattch status

0x4e545030 0 root 600 80 2

0x4e545031 32769 root 600 80 2

0x4e545032 65538 root 666 80 1

0x4e545033 98307 root 666 80 1

0x47505344 131076 root 666 8232 1

address@hidden:~#

ntpd does not seem to fetch the time from gpsd. Am I missing anything in here ?

Thanks,

Nagaraj

From:	nagaraj
Subject:	[gpsd-users] ntpd would not synch up with gpsd
Date:	Mon, 13 Mar 2017 13:15:45 -0700