How to fix Network Manager Disabled problem in ubuntu 10.04 (Lucid)

50 Comments to “How to fix Network Manager Disabled problem in ubuntu 10.04 (Lucid)”

1. mctom says:

   December 8, 2011 at 7:40 pm

   My first 15 minutes of experience with any linux was a networkmanager crash. it took me several hours of trying to cope with it myself (I thought that I’m doing something wrong), yet it seems that after n-teen years of development Linux still fails at simple tasks.
   Thankfully it’s not my computer I set up linux on.

   Anyways, back to the topic: neither the commands worked, nor the manual operation (the file cannot be edited or deleted, despite I made my account member of all possible groups). What’s up with that? I should have typed some more magic, maybe?
   Eventually I’ve solved an issue by killing the process (Knetworkmanager, like if that K was necessary?) and suspending to disk. Hopefully one of the fixes that are currently being downloaded solves the issue. I just hope for it.

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2. chris says:

   December 12, 2011 at 6:01 pm

   it worked. thank you.

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   why0712 Reply:
   May 2nd, 2012 at 12:07 am

   Thank you for your post. It worked instantly.

   [Reply]
3. James says:

   January 6, 2012 at 1:53 am

   @mctom: the “more magic” is “sudo” before each command -

   sudo service network-manager stop
   … etc.

   “sudo” runs the command as the root user, which is not the same (has more powers) even than making your user a member of all admin groups.

   Maybe the OP is running always as root (!!!! gasp!) and didn’t think of sudo because of that.

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4. Mayank says:

   January 6, 2012 at 11:41 am

   Thanks a lot for the information.
   It works.

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5. Skyler says:

   January 21, 2012 at 3:46 am

   Thanks a lot man it worked

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6. karan says:

   January 28, 2012 at 3:33 am

   any more ideas ? , its not working at all , with root also,

   thanks in advance ,

   [Reply]

   Wiley Reply:
   March 15th, 2012 at 4:51 am

   1.) Check in file /etc/NetworkManager/nm-system-settings.conf and after [ifupdown] there should be managed=true (if false then change to true, otherwise network interfaces such as eth0 or wlan0 will have to be managed manually or by some other script)

   2.) [at prompt type] sudo chmod 600 /etc/NetworkManager/system-connections/* (the files in this directory must be read-only by root only or NM will ignore them and there will be a log entry in /var/log/syslog if NM rejects due to “insecure configuration”

   3.)[at prompt type] rm /var/lib/NetworkManager/NetworkManager.state (“rm” means “remove”, is like “del” in DOS, if that helps)

   4.) [at prompt type]service network-manager restart

   Viola! rebooting should not be required – It ain’t Windows.

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   Shoeb Reply:
   May 17th, 2012 at 7:43 pm

   Great work. This one saved a million hours and headache too

   Thanks again.

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7. Brijin Sasankan says:

   March 2, 2012 at 11:04 pm

   Thanks for the fix! It worked for me.

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8. qwertyuiop says:

   March 9, 2012 at 5:40 pm

   https://bugs.launchpad.net/bugs/524454

   Fixed in Maverick and newer.

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9. irfan patel says:

   April 12, 2012 at 1:12 pm

   Thank u tons of time!!!!

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10. John says:

    June 28, 2012 at 12:27 pm

    Thank you so much! This is just what I needed!

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11. jamo says:

    July 19, 2012 at 9:33 am

    Thanks! Worked 100% on PowerPC

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12. V says:

    October 5, 2012 at 7:16 pm

    thanks, it worked

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13. Colin says:

    October 17, 2012 at 5:42 pm

    Alternatively:

    sudo stop network-manager
    sudo rm -f /var/lib/NetworkManager/NetworkManager.state
    sudo start network-manager

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14. Uriel says:

    November 1, 2012 at 7:47 pm

    the suggestion of Colin is great !

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15. dlm says:

    November 22, 2012 at 6:20 pm

    This is great thank you! And yes, used sudo before each command.
    The irony is that to look this up & make ubuntu work I used my laptop that runs on windows

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16. lmeyro says:

    November 29, 2012 at 11:30 pm

    I tried entering the commands it said commands not recognized…

    [Reply]
17. Edmond says:

    February 17, 2013 at 9:36 pm

    Would this work from root in ubuntu 12.10, please?

    [Reply]