If ntpd is running, ntpdate should never run - doing so causes clock jumps. In Trusty, /etc/network/if-up.d/ntpdate actually stops ntpd so ntpdate can run. Debian jessie doesn't do this, so if this was from upstream, it's been fixed.
>From /etc/network/if-up.d/ntpdate: ----- if [ -e /usr/sbin/openntpd ]; then service='openntpd' else service='ntp' fi invoke-rc.d --quiet $service stop >/dev/null 2>&1 || true /usr/sbin/ntpdate-debian -s $OPTS 2>/dev/null || : invoke-rc.d --quiet $service start >/dev/null 2>&1 || true ------ Workaround: sudo mkdir /etc/network/if-up.d.disabled sudo dpkg-divert --divert /etc/network/if-up.d.disabled/ntpdate --rename /etc/network/if-up.d/ntpdate -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to ntp in Ubuntu. https://bugs.launchpad.net/bugs/1278359 Title: ntpdate call frequency To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1278359/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs