Solution to show "device unmanaged" when Ubuntu is connected to Ethernet

Solution to show "device unmanaged" when Ubuntu is connected to Ethernet

Fault Analysis:

The computer may have been set up before Ppoe (wired broadband virtual dialing), commonly used to connect campus dial-up broadband.

Workaround:

First Step: Open terminal

Step two: Switch to the root user

Step three: Switch to the/etc/network directory: cd/etc/network/

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Fourth step: Type Viminterface into the Edit interfaces file mode. The last line of content means that eth0 need to manually configure the connection, but the current LAN is a DHCP network, that is, access to the network's computer needs to "automatically obtain an IP address." The contents of the original document are as follows:

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Fifth step: Comment out the last line in English edit mode and save the exit

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Sixth Step: Restart Service: Sudoservice network-manager restart

set Ppoe: later need to leave the DHCP LAN connection wired broadband virtual dial-up network only need to cancel the fifth step of the note save and restart the service.

This article is from the "12048118" blog, please be sure to keep this source http://12058118.blog.51cto.com/12048118/1858558

Solution to show "device unmanaged" when Ubuntu is connected to Ethernet