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AntonioCS
Asked: 2010-08-23 14:41:50 +0800 CST

Unmanaged network icon - Network manangement disabled

  • 772

I was having problems connecting to the internet either by wireless or wired connection. I keep getting an icon in the systray that has a tooltip that says "unmanaged" and when I click on it I get a "Network management disabled".

I googled and found the command:

sudo dhclient eth0

Which finally enabled my network and I have net. The problem is I still get the icon with the some word "unmanaged"

Can anyone help me out? I just want to know what is happening and why did I had to go to the command line to enable my network.

I had to put the computer in sleep mode and then it wouldn't wake up, so I rebooted the machine. The network manager problems started again, this time the file mentioned by maco had the value set to true and it still wouldn't work.

Anyone know how I can make this permanently work? I did a 

sudo init 0

And when I booted the machine at a later time I had the network manager enabled. Have no clue why.

network-manager

7 Answers

  1. Best Answer

    I find this happens after a bad shutdown. Just change 

    managed=false

    to

    managed=true

    in /etc/NetworkManager/nm-system-settings.conf

    Note: In newer versions of Ubuntu, the file is at /etc/NetworkManager/NetworkManager.conf

    • 33

  2. This worked for Ubuntu 17.04

    sudo touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf
sudo service network-manager restart
    • 15

  3. You should look at the contents of the file /var/lib/NetworkManager/NetworkManager.state. It should look something like this:

    [main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true

    Change any from 'false' to 'true' to re-enable networking. It may work better if you first stop NetworkManager:

    sudo stop network-manager

    And start it again once done. Or reboot :)

    In any case, this is frequent when a suspended system fails to wake up. It should be fixed in Maverick.

    • 8

  4. I've just upgraded from Ubuntu 16.04 to 16.10. After that, this problem started to happen to me. In my case, I've solved it following the suggestion given in Ubuntu's launchpad:

    touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf

    This creates an empty file.

    • 8

  5. I just upgraded from Ubuntu 16.04 to 16.10. I have 3 network cards (all configured) and no Wifi. All 3 cards were disabled, all options on the Network Manager menu were greyed out, so clicking them does nothing. I fixed it by combining two of the solutions above:

    Edit /etc/NetworkManager/NetworkManager.conf and change:

    managed=false

    to

    managed=true

    Restarted network-manager:

    sudo service network-manager restart

    No change. Then I tried:

    touch /etc/NetworkManager/conf.d/10-globally-managed-devices.conf
sudo service network-manager restart

    All three network cards came back on-line.

    • 7

  6. Try right-clicking the NetworkManager icon and enabling the network from that menu.

    • 0

  7. I installed ubuntu-gnome-desktop to ubuntu server 14.04.4 and the file was not nm-system-settings.conf, but NetworkManager.conf

    As in sudo gedit etc/NetworkManager/NetworkManager.conf I could not find nm-system-settings.conf Perhaps it is not installed (nm-system-settings) as I do not see it on the gnome Panel bar in the gnome classic view desktop. Need to get the Network going to do updates and install gnome-session-flashback to get the Gnome-Flashback (Metacity) on 14.04.4 LTS, my Favorite desktop!

    I had not checked /var/lib/NetworkManager/NetworkManager.state before reboot but, perhaps it was updated after reboot as it was correct.

    • 0