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I want to disable NetworkManager entirely, and have my eth0 and wifi connections unmanaged. My eth0 on my main linux box is unmanaged and I have no issues with it, I want to do the same to my other linux boxes all running Ubuntu 12.04 LTS, basically I want to kill Network Manager and never see any trace of it again.

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"I want to kill Network Manager and never see any trace of it again." I feel you. –  meawoppl Apr 16 at 19:34
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3 Answers

up vote 4 down vote accepted

First edit /etc/network/interfaces so that the ifup utility can be used to configure eth0 once NetworkManager is gone.

Remove NetworkManager from the system

sudo apt-get purge network-manager

Configure eth0 using ifup.

sudo ifup eth0
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ifup was what I was looking for, thanks that helps simplify things greatly. –  Drassx15 Jan 31 '13 at 20:01
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It might be worth it to disable it, configure your alternate setup, and then uninstall it.

https://help.ubuntu.com/community/NetworkManager#Disabling_NetworkManager

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Gnome:

sudo apt-get remove --purge network-manager-gnome network-manager

KDE:

sudo apt-get remove --purge knetworkmanager network-manager

Unity : lol, Unity.

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