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Accepted
Enea Carlini
Asked: 2024-10-11 02:44:20 +0800 CST

Ubuntu 24.04.1 LTS Ethernet connection not working

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I've just installed Ubuntu for the first time. Everything was working fine, but then I needed to add the VPN from my university. Since it didn't work I followed the recommended steps:

  1. Check Networkmanager by sudo NetworkManager --print-config
  • Make sure that [ifupdown] is set to false
  • Check that you have the line dns=default
  • If not, change the NetworkManager.conf file and add in the main [main] section the line dns=default by sudo nano /etc/NetworkManager/NetworkManager.conf
  1. Disable systemd-resolve for letting NetworkManager completely manage the network connections
  • sudo systemctl stop systemd-resolved

  • sudo systemctl disable systemd-resolved

  • sudo rm -f /etc/resolv.conf

  • sudo systemctl restart NetworkManager

Now my ethernet connection stopped working, and there is a question mark on the 'Wired Conncections' symbol.

If I go to 192.168.0.1, I can access my router's page.

If I ping 8.8.8.8, I get 0% packet loss.

I'm not sure what else to share, please help.

networking

1 Answers

  1. Best Answer

    The solution was just:

    • sudo systemctl enable systemd-resolved 

    • sudo systemctl start systemd-resolved

    Still no clue what I'm doing, but it worked. Thanks to @mpboden!

    • 1