This tutorial would help you fix the "device is unmanaged" error which occurs sometimes after a ubuntu update. This error occurs in ubuntu's network manager . So if you face this issue, here's how you can fix it :
Step 1 : Go to the Terminal ( Applications->Accessories->Terminal ) and type sudo gedit /etc/NetworkManager/nm-system-settings.conf
Step 2 : A window would now popup displaying the contents of the nm-system-settings.conf file
Step 3 : Now Change "managed=false" to "managed=true"
Step 4 : Save the file and close the window
Step 5 : Now back in the terminal type sudo killall nm-system-settings
Step 6 : Thats it, your network interface should now be detected and it should attempt to connect to a network.
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Prashanth Speaks-Technology and Life
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16 comments
Yeah, excellent!
L
Great! Thanks!
Any idea why the problem happens in the first place? I had the problem after connecting through ethernet for awhile. Before that wireless was fine.
It could be if something overwrote the interfaces file!!Then network manager would no longer be used instead the networking service of ubuntu would depend on the interfaces file
ZOMG, this was such a pain till you fixed it!!! props man, u rock
This was very helpful. Thank you !! I already had switched to using wicd, but my broadband didn't work with that toll. Now back to networkmanager everything works great !
Right man, this is fixed, but before I used to type in my data in the /etc/network/interfaces, after I found hint informations in the resolvconfig manpage.
Then I added my "dns-servers" from my provider and it works without any NetworkManager, this is linux, sometimes simply the best ;)
thx to this author
you saved the night
now to the problem of connection wireless via pppoe
or if I am lucky version 9.10 will sort that for me tomorrow :)
cheers
newbeeeeee
Worked for me! Thanks very much!
(Although I had to reboot, as the killall command didn't find the process)
Hi prash.
The nm-system-settings.conf on my Ubuntu 11.04 is blank. I'm trying to install a Belkin F5D8010 on a Fujitsu C Lifebook.
Under 11.04, the file is called "NetworkManager.conf". Also under 11.04, instead of typing in "sudo killall nm-system-settings", you have to type "sudo killall NetworkManager".
hey i m getting "no process found"
Did not work for me. I get a 'no process found' on step 5.
My ethernet and wifi used to work perfectly, managed by NetworkManager.
I downloaded and installed a whole bunch of .deb update files on Nov 7, and ethernet has not worked since, and wifi takes 10 or 15 minutes to connect. Now I see that the file /etc/NetworkManager/nm-system-settings.conf simply does not exist. I think it used to.
sudo : gedit : command not found........ what should I
do????
you can use nano instead of gedit
YOU DID IT !!!
You saved me. A trillion blessings!
I spent days editing stupid .conf files, typing in pointless commands while a single, simple one did the trick.
I draw my hat!
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