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 Desktop Packages, which is subscribed to network-manager-applet in Ubuntu. https://bugs.launchpad.net/bugs/1725062 Title: Network Manager Applet can't connect to VPN, but nmtui does Status in network-manager-applet package in Ubuntu: Confirmed Bug description: 1) Ubuntu 17.10 Fresh install 2) network-manager-pptp/artful,now 1.2.4-4 amd64 VPN connection, created in network manager can't even turn on - slider goes back to off right after your click on it. Connect via "connect" does nothing too. I've tried to change option - store password/do not store password. No errors shown,except syslog: Oct 20 03:13:27 sabertooth NetworkManager[824]: <info> [1508458407.5923] audit: op="connection-activate" uuid="709047eb-3254-419f-a152-0a8ff0c3a04b" name="Schastye" pid=1603 uid=1000 result="success" Oct 20 03:13:27 sabertooth NetworkManager[824]: <info> [1508458407.5966] vpn-connection[0x55b89ac6b2c0,709047eb-3254-419f-a152-0a8ff0c3a04b,"Schastye",0]: Started the VPN service, PID 5992 Oct 20 03:13:27 sabertooth NetworkManager[824]: <info> [1508458407.6019] vpn-connection[0x55b89ac6b2c0,709047eb-3254-419f-a152-0a8ff0c3a04b,"Schastye",0]: Saw the service appear; activating connection Oct 20 03:13:27 sabertooth gnome-shell[1603]: Invalid VPN service type (cannot find authentication binary) Oct 20 03:13:27 sabertooth gnome-shell[1603]: Invalid VPN service type (cannot find authentication binary) Oct 20 03:13:27 sabertooth NetworkManager[824]: <error> [1508458407.6336] vpn-connection[0x55b89ac6b2c0,709047eb-3254-419f-a152-0a8ff0c3a04b,"Schastye",0]: Failed to request VPN secrets #3: No agents were available for this request. Oct 20 03:13:27 sabertooth NetworkManager[824]: <info> [1508458407.6347] vpn-connection[0x55b89ac6b2c0,709047eb-3254-419f-a152-0a8ff0c3a04b,"Schastye",0]: VPN plugin: state changed: stopped (6) If i try to connect to VPN via nmtui - everything works fine. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1725062/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
