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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26"I want to kill Network Manager and never see any trace of it again." I feel you. – meawoppl Apr 16 '14 at 19:34
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9+1 merely for the frustration expressed here, and shared whole-heartedly even two years later. I swear NetworkManager was some evil incarnation from Microsoft designed to torpedo Ubuntu. – David W Mar 21 '15 at 14:10
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4Again a +1 for the frustration. We need an alternative! – Babbzzz May 14 '15 at 13:14
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4Nicely said... Thought I was the only one frustrated at it... +1 – Sunny Jul 01 '15 at 19:17
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Network manager is an absolutely nightmare, just let us have the configs! – Owl Mar 03 '19 at 16:22
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Don't forget to remove connman too, that will keep overwriting your resolv.conf! – Owl Jan 10 '20 at 11:31
6 Answers
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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1ifup 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.
I did through it may be it will help some one to remove safely Network Manger:
sudo apt-get remove network-manager network-manager-gnome network-manager-pptp network-manager-pptp-gnome
Or
sudo apt-get remove --purge network-manager network-manager-gnome network-manager-pptp network-manager-pptp-gnome

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I don't have 50 rep points to comment, so I'll add some info as an answer that may be helpful. On a Surface Pro 3 with Ubuntu 14.04 installed, Giving this command:
killall -STOP NetworkManager
made a dramatic improvement in RTP-over-wireless streaming applications. NM can be restarted with -CONT
parameter. More details here:
Disable / Enable Periodic Wireless Scans
For the SP3 there are other settings required, including net.core.xxx
items, and to maintain optimum performance it should remain plugged in. Likely this info applies to other tablets with Ubuntu also.

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