I can confirm this issue on Xubuntu 15.10 too. Using Joost's method (of not using "New Mobile Broadband connection") seems to work sometimes but not always and that too doesn't survive reboots. I'm in the process of finding out more information/workarounds for this issue.
-- 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/1508718 Title: NetworkManager - error initialzing editor Status in network-manager-applet package in Ubuntu: Confirmed Bug description: Error initializing editor settings/nm-settings-connection.c.995 - Connection didn't have requested setting 'ppp' Error occurs when attempting to edit existing mobile broadband connection. Editing existing Ethernet connections succeeds without error. This broke between 1.0.4-0ubuntu3 and 1.0.4-0ubuntu5 The connection still functions correctly but its properties can no longer be edited with gui. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: network-manager-gnome 0.9.10.1-0ubuntu7 ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3 Uname: Linux 4.2.0-16-generic x86_64 ApportVersion: 2.19.1-0ubuntu3 Architecture: amd64 CurrentDesktop: Unity Date: Wed Oct 21 23:14:57 2015 ExecutablePath: /usr/bin/nm-connection-editor IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback InstallationDate: Installed on 2015-09-30 (21 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150924) IpRoute: default via 10.109.83.190 dev wwan0 proto static metric 750 10.109.83.188/30 dev wwan0 proto kernel scope link src 10.109.83.189 metric 750 169.254.0.0/16 dev wwan0 scope link metric 1000 IwConfig: wwan0 no wireless extensions. eno1 no wireless extensions. lo no wireless extensions. JournalErrors: No journal files were found. -- No entries -- NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true RfKill: SourcePackage: network-manager-applet UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH cdc-wdm0 gsm connected /org/freedesktop/NetworkManager/Devices/2 att_stick d13a7207-c11a-47ad-8876-ee62c3ccb5b2 /org/freedesktop/NetworkManager/ActiveConnection/7 eno1 ethernet disconnected /org/freedesktop/NetworkManager/Devices/0 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/1 -- -- -- nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager-applet/+bug/1508718/+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

