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Initially, when I had installed Debian 'Wheezy' on my old trusty laptop, it's network was managed by Network-Manager. However, at some point, I think I did something, which lead to the network connectivity, no longer being managed by Network-Manager, though the NM-applet continues to show-up on my GNOME classic desktop.

Question is, how can I get the configuration back to a state where network is again managed by Network-Manager ?

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1 Answer 1

May be you used /etc/network/interfaces to configure that interface? This file is managed by legacy ifupdown system (and its commands ifup and ifdown). If network manager sees entries for your network interface in /etc/network/interfaces it stops handling that interface by itself.

May be you brought the interface down with ifconfig - in that case just bring it back up with sudo ifconfig your_interface_name up, where you can find the interface name by just running sudo ifconfig - it's something like eth0 or wlan0.

See more info in official page and this answer.

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Hmm... I think might have edited the /etc/network/interfaces. Will try to undo those and see. Thanks for replying. –  jay Sep 16 '13 at 8:35
    
@jay No worries. Also, you can find some troubleshooting info in /var/log/syslog if get some error messages. –  Bob Sep 16 '13 at 8:40

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