I have 12.04 Desktop installed, how do I uninstall Network-Manager and set /etc/network/interfaces as the default file to resolve my network connections?

2 Answers

If you manually manage your network card in /etc/network/interfaces , network manger will not manage it , it will state "Not Managed"

Suppose your network card is eth0 :

To setup eth0 to static, enter:

open /etc/network/interfaces : auto eth0 iface eth0 inet static address 192.168.1.15 #------> Your Ip Address netmask 255.255.255.0 #------> Netmask gateway 192.168.1.254 #-------> Gateway broadcast 192.168.0.255 dns-nameservers 192.168.1.3 #-----> Dns server

To setup eth0 to dhcp, enter:

auto eth0 iface eth0 inet dhcp

The different keywords have the following meaning:

auto: the interface should be configured during boot time.

iface : interface

inet: interface uses TCP/IP networking.

Now restart service :

sudo service network-manager restart
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In the file /etc/NetworkManager/NetworkManager.conf:

[main] plugins=ifupdown,keyfile dns=dnsmasq no-auto-default=00:0C:29:90:24:0F,00:0C:29:2E:C8:2C, [ifupdown] managed=false

where false means that network-manager doesn't manage the interfaces located in the file /etc/network/interfaces.

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