Isn't it unmanaged if You take control over it through ifupdown by entering appropriate lines in /etc/network/interfaces and/or in NM config file...?
It was like that since couple of releases ago...
At my place it is umnanaged (almost) all the time...
will interfere with Network manager.# interfaces(5) file used by ifup(8) and ifdown(8)
iface lo inet loopback
I do not have this issue on my Gnome Remix. Try seeing what is in the interfaces file.
It is a machine. It is more stupid than we are. It will not stop us from doing stupid things.
Ubuntu user #33,200. Linux user #530,530
I seem to have anthropomorphized the mini.iso. I really shouldn't - she hates when I do that...
Even though wireless would work the g-c-c panel showed nothing & was basically worthless, certainly if wanting to connect to another wireless access.
Best fixed here by -
sudo nano /etc/NetworkManager/NetworkManager.conf
and editing false to true
sudo /etc/init.d/network-manager restart
brought back as expected