How to Fix the "Device Not Managed" Error in Network Manager

Network Manager is an essential utility for Linux, designed to connect Linux users to the Internet and other networks. For most of the time, this program works flawlessly, but it is not perfect. One common problem is that this program will display the error message “Device not managed”. This problem can be easily fixed by following these few, simple steps.

Steps

  1. Image titled Fix the "Device Not Managed" Error in Network Manager Step 1
    1
    Open up the terminal. This can be done by pressing Ctrl+Alt+T. Then type in the following command: gksu gedit /etc/NetworkManager/NetworkManager.conf You will be required to give an administrative password.
  2. Image titled Fix the "Device Not Managed" Error in Network Manager Step 2
    2
    Edit the NetworkManager.conf file. In the last line, replace the managed=false to managed=true. Then save the file and exit the editor.
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  3. Image titled Fix the "Device Not Managed" Error in Network Manager Step 3
    3
    Restart your PC or the Network Manager. If you don't want to restart your PC, then give the terminal this command: sudo restart network-manager.
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Co-authors: 4
Updated: October 13, 2018
Views: 38,810
Categories: Computer Networking
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