Dtyjlui

wired device not managed

I had the same problem with a fresh install on my Asus Eee PC 1005HA. The live environment worked with no problems, but once installed I couldn't get the connection to respond or to not read "device not managed". When I changed the text in this configuration file and restarted Network Manager everything worked!

gksudo gedit /etc/NetworkManager/NetworkManager.conf

for lubuntu:

gksudo leafpad /etc/NetworkManager/NetworkManager.conf

Now the text editor will open. Find the line managed=false and replace false with true and save the file (ctrl+s) and close the file.

Restart your computer or the NetworkManager service (sudo service network-manager restart).

wireless device not managed

I've also found this issue after installing the Ubuntu 11.10 alternate version.

In my case, the /etc/network/interfaces was configured during installation to download new packages, and the conflict arose after the NetworkManager was set up during the first session.

The solution I've found was commenting the lines related to the wlan interface in the /etc/network/interfaces (in console, sudo vim /etc/network/interfaces or your editor of choice):

# The primary network interface

#auto wlan0

#iface wlan0 inet dhcp

#    wpa-ssid [your_ssid]

#    wpa-psk [your_wpa_password]

And then, as Joseph VanPelt proposed, set managed=false in the /etc/NetworkManager/NetworkManager.conf and running sudo service network-manager restart.

wired device not managed

This is a simple command which does the same as the accepted answer non-interactively.

Run this command in a Terminal to use it:

sudo sed -i 's/^managed=false/managed=true/' /etc/NetworkManager/NetworkManager.conf

You may have to restart the network manager afterwards with this command:

sudo service network-manager restart

Situation like this may appear, when one runs pppoeconf or something similar and the command overwrites the setting saved by NetworkManager. Even though the device seems to be working properly, Network Manager shows device status to be unmanaged.

If this a normal user's pc with simple network configuration like connecting via DHCP and automatic configuration, simply out comment the lines and restart network manager.

$ sudo restart network-manager

If situations other than these, please explain.

I had the same problem, I solved it by commenting the lines where the unmanaged device was mentioned, by mac address, in /etc/NetworkManager/NetworkManager.conf.

[main]

plugins=ifupdown,keyfile

dns=dnsmasq



[ifupdown]

managed=false



[keyfile]

unmanaged-devices=mac:00:26:2d:fd:5c:e0

changed to

[main]

plugins=ifupdown,keyfile

dns=dnsmasq



[ifupdown]

managed=false



#[keyfile]



#unmanaged-devices=mac:00:26:2d:fd:5c:e0

None of the given solutions worked for me. I was having this problem on an Ubuntu 16.04 machine I hadn't booted in a long time. After some more searching this command is what worked for me.

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

There are two ways to manage network connections. You either have to do everything thru the network manager and remove everything Except the Loopback entry in /etc/network/interfaces

auto lo

iface lo inet loopback

or totally remove the network manager thru the package manager or terminal and use the /etc/network/interfaces and /etc/resolve.conf file to control your connections. If not you will see the error you are getting. Even with static IP I've found that the network manager makes things easy and you can configure your IPV4 connections thru the menu.

Just to add a non-default answer, this can also happen if your computer has a hardware ON/OFF switch for the Wi-Fi interface. If you have such a "killswitch", ensure that you haven't accidentally turned the interface off

In 11.10 you can go to System Settings and you should see a Network Icon. Run that utility and you should see tabs for your network devices, wired and wireless. Each tab has a slider that allows you to switch the device off. Or in your case switch eth0 or wired connection 1, as it is now called, on. May be. At least check that it not switched to off.

regards.

wireless device not managed

This is because the alternate images were for a period of time, configuring the wireless networks in /etc/network/interfaces; which causes NetworkManager to, on purpose, ignore the interface and consider them online.

A good solution if you want to simply use your wireless connection (or wired) with DHCP is to comment out these settings in /etc/network/interfaces for all interfaces except lo, and reboot your system or restart NetworkManager like so:

sudo restart network-manager

Of course, this means you will need to enter your wireless settings into NetworkManager (password, etc) after clicking on the right item from the applet menu.