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

Source: Internet
Author: User

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/

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M01/88/5B/wKiom1fx7ayzQoHBAABIjio1SVk625.png-wh_500x0-wm_3 -wmp_4-s_2680040823.png "title=" 111.png "alt=" Wkiom1fx7ayzqohbaabijio1svk625.png-wh_50 "/>

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:

650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/88/57/wKioL1fx7piCVFxxAACMcEHzWFI674.png-wh_500x0-wm_3 -wmp_4-s_249437976.png "title=" 2.png "alt=" Wkiol1fx7picvfxxaacmcehzwfi674.png-wh_50 "/>

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

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M02/88/5B/wKiom1fx7wnA3W5_AACN6yG6EH8676.png-wh_500x0-wm_3 -wmp_4-s_2167081365.png "title=" 3.png "alt=" Wkiom1fx7wna3w5_aacn6yg6eh8676.png-wh_50 "/>

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

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.