I have symptoms like these as well - I think these are the relevent syslog lines:
Oct 25 23:29:34 tim-573P pppd[25897]: LCP: timeout sending Config-Requests Oct 25 23:29:34 tim-573P NetworkManager[23036]: LCP: timeout sending Config-Requests Oct 25 23:29:34 tim-573P NetworkManager[23036]: Connection terminated. Oct 25 23:29:34 tim-573P pppd[25897]: Connection terminated. Oct 25 23:29:34 tim-573P NetworkManager[23036]: <info> [1508970574.5444] vpn-connection[0x556db598a6d0,fe39617c-d214-480d-a0f1-6344e6005878,"Manifest",0]: VPN service disappeared Oct 25 23:29:34 tim-573P NetworkManager[23036]: <info> [1508970574.5475] devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0) Oct 25 23:29:34 tim-573P gnome-shell[4380]: Removing a network device that was not added Oct 25 23:29:34 tim-573P gnome-shell[1815]: Removing a network device that was not added Oct 25 23:29:34 tim-573P pppd[25897]: Terminating on signal 15 Oct 25 23:29:34 tim-573P NetworkManager[23036]: Terminating on signal 15 Oct 25 23:29:34 tim-573P NetworkManager[23036]: Child process /usr/sbin/pptp 77.44.84.210 --nolaunchpppd --loglevel 0 --logstring nm-pptp-service-25893 (pid 25900) terminated with signal 15 Oct 25 23:29:34 tim-573P NetworkManager[23036]: Modem hangup Oct 25 23:29:34 tim-573P pppd[25897]: Child process /usr/sbin/pptp 77.44.84.210 --nolaunchpppd --loglevel 0 --logstring nm-pptp-service-25893 (pid 25900) terminated with signal 15 Oct 25 23:29:34 tim-573P pppd[25897]: Modem hangup Oct 25 23:29:34 tim-573P pppd[25897]: Exit. Oct 25 23:29:34 tim-573P zeal.desktop[14336]: "No such interface 'org.freedesktop.DBus.Properties' on object at path /org/freedesktop/NetworkManager/ActiveConnection/14" Oct 25 23:29:34 tim-573P gnome-shell[4380]: [AppIndicatorSupport-WARN] Attempting to re-register :1.74/org/ayatana/NotificationItem/multiload; resetting instead -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1725062 Title: Network Manager Applet can't connect to VPN, but nmtui does To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1725062/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
