After a recent reboot it stopped working, saying “device not managed” and you won’t be able to connect to internet. This error only happened if you’re using Network Manager to manage the network connection. For most of the time, this program works flawlessly, but it is not perfect. Now, you’re facing the problem with Device not managed issue by NetworkManager
With my exprienced, it does seem happen to Wired and Wireless Network Interfaces.
If you got this problem and this guide takes you through step by step procedures on fixing “Wired / Wi-Fi Network interface Device not managed error” in almost Linux distros from Ubuntu, Debian, Fedora, Arch Linux, Kali Linux and more …