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.
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
sudo apt-get remove --purge network-manager network-manager-gnome network-manager-pptp network-manager-pptp-gnome
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:
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.