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I have a computer I haven't used in a while running Ubuntu 12.04 I want to upgrade to fix the problems but I can't get a working connection.

During start up I get the message waiting for network configuration.Once started I used to be able to get online by running sudo dhclient eth0 to make my wired connection work. I've tested the wired connection works on another machine.

I've tried a load of things from googling to no avail.

Please help. I'm pretty much a novice Ubuntu user. If there's any logs I need to include here let me know.

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  • what your are using dhcp or a static ip
    – nux
    Feb 26, 2014 at 23:32
  • Its running dhcp
    – Cactus
    Feb 27, 2014 at 6:42

2 Answers 2

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If you are using Desktop means you have to delete interfaces file (auth eth0 or eth1 and iface inet eth0 dhcp) but don't to delete the loopback address.

Then start your services using service networking start

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  • Thanks. I'll try when I get home. Could you explain why this is?
    – Cactus
    Feb 28, 2014 at 9:14
  • in desktop, once you restart the machine it automatically connect the internet. no need to edit in interface file.
    – Beginner
    Feb 28, 2014 at 9:16
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This may sound stupid but I had an issue like this and found that if your airport/air travel connection is turned on you will have issues getting connected even if running straight wire hookup. No idea why this happens. Hope this is your issue also.

   Artook
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  • I dont believe I uave this feature. Also its a desktop pc
    – Cactus
    Feb 27, 2014 at 6:46
  • This allowed me to get a wifi connection. Though I couldnt find this option until I manually updated network manager. The ethernet was something to do with the interface not being managed.
    – Cactus
    Feb 27, 2014 at 20:09
  • ...but unfortunately after a restart its broken again.
    – Cactus
    Feb 28, 2014 at 9:14

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