Hi, I'm getting the "device not managed" error for all wired devices. I tried with an USB-ethernet adapter, my android phone tethered, and the internal nic all shows "device not managed".
NetworkManager.conf has the line managed=true
/etc/network/interfaces has only "auto lo"
I googled it and all the fixes say check those two files. It's not it. restarted network manager, restarted the machine, left the cable in.
nothing.
It's a fresh install of 16.10 i686, hdd wiped clean.