Friday, March 7, 2014

'Device Not Managed' by NetworkManager - Debian / Ubuntu / Kali Linux | Problem [Solved]

Written by Pranshu Bajpai |  | LinkedIn

Problem Scenario:

When you install a fresh copy of Kali linux / Debian / Ubuntu, you may be plagued by this error which wouldn't let you connect to the 'Wired' network. The Wireless (wlan0) might work just fine but under 'Wired' Network, it says 'Device not managed'


If this interface appears in '/etc/network/interfaces' file, Network Manager won't manage it by default and we need to change this behavior.

To do this, make modifications in the file:
#vi /etc/NetworkManager/NetworkManager.conf
Change 'managed-false' to 'managed=true'

Now restart the Network Manager
#service network-manager restart
You should see 'Auto Ethernet' appear under the 'Wired' header in the Network Manager now and would be able to connect to it.


  1. didn't work for me either.. Tried multiple times. Finally got it to work normally but connected to my AP instead of hard wire to switch. Tried this on another laptop, worked every time.

  2. Worked for me.
    But before this fix my connection was already was just the applet that showed "not managed"