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arsho/fix_ethernet.md

Created January 18, 2021 18:10
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Fixed unmanaged ethernet connection in Ubuntu 20.10
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fix_ethernet.md

Scenario

  • In Ubuntu the Ethernet connection was shown as unmanaged wired connection.
  • This happened after using sudo pppoeconf to configure a pppoeconfiguration.

Solution

  • Open /etc/NetworkManager/NetworkManager.conf with sudo previlege:
sudo gedit /etc/NetworkManager/NetworkManager.conf
  • Change the line managed=false to managed=true
  • Restart network manager with
sudo service network-manager restart
  • I got the following error:
Failed to restart network-manager.service: Unit network-manager.service not found.
  • Started and enabled the network manager:
systemctl start NetworkManager
systemctl enable NetworkManager
  • Restarted the network manager service:
sudo systemctl restart NetworkManager.service

Reference

@jeastberg
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Thanks, this worked for me. I'm using Ubuntu 22.04.3

@jvictorferreira3301
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this worked here, ubuntu 22.04. tks

@Perondas
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Worked on my 24.04. Thank you

@HieuNguyen-8
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Worked .Thansk

@User21T
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User21T commented Aug 10, 2025

It worked on Debian 12.11. Thank you.

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