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Daniyal Lukmanov
Asked: 2024-09-12 17:53:56 +0800 CST

Upgraded to 24.04LTS from 22.04 and network doesn't work at all

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I can't connect to the internet neither using wired connection nor USB modem (desktop PC, no wifi). Checked status of NetworkManager - it works. But internet still unavailable. Tried different approaches - interface adding, netplan using and other - didn't help. What should I do?

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networking

2 Answers

  1. I have the same problem and I found this answer worked for me Bug connection ubuntu

    Summary, my steps are

    1. Run

    sudo apt install systemd-resolved

    1. disconnect wifi/ wired

    2. turn on wifi again

    3. connect successfully

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  2. Best Answer

    After some research I found out that the file /etc/resolv.conf either damaged or not existed. At least I couldn't open it. So in my case I first removed the file in case if it existed but damaged using command:

    sudo rm /etc/resolv.conf

    And then checked status by command:

    systemctl status systemd-resolved.service

    The status was active(runnig). After that I checked if I have a stub-resolv.conf file by command:

    cat /run/systemd/resolve/stub-resolv.conf

    and got its content which says

    This file might be symlinked as /etc/resolv.conf

    and other things.
    So I tried the command:

    ln -s /run/systemd/resolve/stub-resolv.conf /etc/resolv.conf

    which actually creates a symlink.
    After all these steps I got everything work as expected.

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