Public bug reported: I am using GPSD to connect to my GPS receiever (Garmin 18 LVC).
/etc/default/gpsd: START_DAEMON="true" GPSD_OPTIONS="-n -b" BAUDRATE="4800" DEVICES="/dev/ttyS5" USBAUTO="false" GPSD_SOCKET="/var/run/gpsd.sock" The daemon works and i get data using: gpsd -n -b -N -D2 /dev/ttyS5 /etc/ntp.conf: server 127.127.28.1 minpoll 4 prefer fudge 127.127.28.1 refid PPS server 127.127.28.0 minpoll 4 fudge 127.127.28.0 time1 0.535 refid GPS Output of ntpq -p: SHM(1) .PPS. 0 l - 16 0 0.000 0.000 0.000 *SHM(0) .GPS. 0 l 4 16 377 0.000 8.359 18.780 As you can see NTP is only seeing the GPS NMEA input and not the PPS signal. I just upgraded from debian queeze and this exact setup worked there. GPS receiver is working, tested the PPS signal with multi-meter. ** Affects: ntp (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945264 Title: NTP not receiving PPS signal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/945264/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs