Re: Problem with NetworkManager - WAS: Re: Help needed to repair a damaged dual boot Debian System

[Bernard <bdebreil@teaser.fr>]

Selim T. Erdogan wrote:
> Andrei POPESCU,  3.03.2012:
>   
> > On Sb, 03 mar 12, 20:59:30, Bernard wrote:
> >     
> > > Thanks in advance for your help with the 'NetworkManager' or any
> > > other convenient tool that would operate on Squeeze so as to easily
> > > turn an Internet connexion ON and OFF
> > >       
> > Make sure you have NO definition for eth0 in /etc/network/interfaces and 
> > that you have:
> >
> > [ifupdown]
> > managed=false
> >
> > in /etc/NetworkManager/NetworkManager.conf
> >
> > If it still doesn't work after a restart[1] please attach both files.
> >
> > [1] not sure why, but in some cases new configurations did not work 
> > properly until a full restart
> >     
>
> Or you can keep /etc/network/interfaces as you have it now and edit
> /etc/NetworkManager/NetworkManager.conf to have
>
> [main]
> plugins=ifupdown,keyfile
>
> [ifupdown]
> managed=true
>
> (And you have to restart Network Manager.)
>
>
>   
I just tested both ways, to no avail.

At first, I must say that my system did not have any

NetworkManager.conf file in /etc/NetworkManager/

The only NetworkManager.conf file that could be found on this system was in

/etc/dbus-1/system.d/

I can see the same thing on this other machine still on Lenny, where I am writing this from: no  
/etc/NetworkManager/NetworkManager.conf file either.

the man page for NetworkManager does not mention any such conf file. I did not dare modifying 
/etc/dbus-1/system.d/NetworkManager.conf

But I tested creating an /etc/NetworkManager/NetworkManager.conf, with only 

****************************

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false
******************************


As a first trial, I had just written:

***********************
[ifupdown]
managed=false
*************************

in it. But maybe I should have modified permissions and owner ?  Owner was root and perms: -rw-r--r--

Besides, my /etc/network/interfaces file did not contain any definition for eth0. Still, I tested removing any mention of eth0, to no avail.

Below is my  'etc/network/interfaces' file :

*************************************

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

*********************************************