Comment 6 for bug 1573720

Apply https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=9a37d1d970bf5bf1aab35468aabccb8cbfe2a39b allowed NetworkManager to connect to a preconfigured session.

However editing the session via the applet still has issues. Even after applying
https://git.gnome.org/browse/network-manager-applet/commit/?id=8e60431a7d6fc4c5545e58464e10b9131cbd3e6a

and

https://git.gnome.org/browse/network-manager-applet/commit/?id=2af8361c71416c61b96d01423b1a95d3bc692f9d

The network manager patch should be backported into Ubuntu