Network Management disabled

[9AndS]

Kubuntu 10.04 LTS (Lucid Lynx) is what I'm using. And I just got a problem with the network-manager.
The problem is similar to a bug described here, but changing

NetworkingEnabled=true

does not help because it is already "true".
Any help would be appreciated.

[dineshs]

the following link
http://wiki.debian.org/NetworkManager
says that the file /etc/network/interfaces should only contain

auto lo 
iface lo inet loopback

[9AndS]

It does contain only those lines.
So far I've managed to connect to the internet by removing network-manager and installing wicd instead.

[chaosgrimm]

may want to check this too:

/etc/NetworkManager/nm-system-settings.conf

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=true

[9AndS]

In fact I did check that.
The problem occurred when the system failed to restore from Hibernate mode. For a lot of people changing "NetworkingEnabled" to "true" works and fixes the problem. But I already have that enabled. I've checked config files and everything seems to be ok. I even tried:

NetworkingDisabled=false

but no luck.

[tnttrx]

here's the same problem, too.

network management was disabled after failing on resuming from sleep:
battery went out, so instead of resuming, there was a clean startup

changing to

[ifupdown]
managed=true

didn't help.

but,

NetworkingEnabled=true

solved the problem.

then again, maybe it's the combination of both options that solved the problem.

[jetpeach]

thanks, same thing just happened to me after my battery died completely. changed the [ifupdown] managed=true did not solve the problem.
but changing the file /var/lib/NetworkManager/NetworkManager.state to networking enabled did fix the problem.

[zadehas]

For what it's worth, I can confirm that changing the NetworkingEnabled to true in /var/lib/NetworkManager/NetworkManager.state solved the problem for me too.

Thank you

[downinit]

I am having this problem on my system (Kubuntu 10.04) and I get the: "NetworkingEnabled=false" message in Kate. But when I change it to 'true' and try to save, I get an error message that I cannot save a backup of file, followed by a message that I do not have permission to change the file. I have not used Kubuntu very much, and I have forgotten everything I learned about Terminal and Root. I have searched high and low for ways to login as root, but none of them are for 10.04 and none of the older ones work.


Could someone who speaks plain english (for those of us who are not experts) tell me how to change this file, either in Terminal, or in Kate. What do I need to do to get permission to modify the file? The more simple the explanation, the better, as this seems to be a common problem and I am sure I am not the only non-expert that has run across it. I really do not want to have to reinstall 9.10, I have over-written this poor hard drive too many times as it is. Thank you

[dineshs]

You are using kate......... to open the file .Try sudo kate ......