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I've installed the 23.10 iso on my work machine before it got taken down, and everything was working flawlessly. However, after booting up this morning I can't connect to wifi anymore. Tried a few things to get it back to work but nothing has solved the problem so far.

I'm running a Thinkpad L-13 with an Intel Comet Lake PCH-LP CNVi wifi chip.

In systemd's logs, it says:

NetworkManager: rfkill4: found Wi-Fi radio killswitch

everytime I try to connect with the GUI.

With nmtui, when trying to activate a connection, I get:

Could not activate connection: Message recipient disconnected from message bus without replying

The wifi works on the Ubuntu 23.10 live usb.

andre_ange_marcel
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3 Answers3

9

Noticed an error message at boot that mentioned a netplan error. I ran

sudo netplan --debug generate

and then deleted a problematic yaml config file that was probably generated when I changed DNS. Everything is now back to normal.

andre_ange_marcel
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    Worked for me as well, thank you!

    The YAML fiel in question for me was /etc/netplan/00-installer-config.yaml. Just in case, I moved it to /tmp instead of immediately deleting:

    sudo mv /etc/netplan/00-installer-config.yaml /tmp/

     – crocodile2u Oct 18 '23 at 12:36
2

Just an improvement to the answer by Andre above.

When I ran the command,

sudo netplan --debug generate

I got to know the problematic Wi-Fi connection and the .yaml file with the following error message error in network definition duplicate access point ssid

Move the problematic .yaml file to somewhere else (May be /tmp). (Instead delete the problematic .yaml file, better we can move it or having a copy to avoid the loss of file)

sudo mv /etc/netplan/90-NM-afxxxxxc2-2xxc-4xx4-9xxx-exxxxxxxxx8.yaml /tmp/

(The name of the problematic .yaml is different for person to person)

Once it moved you can make sure all good by run the sudo netplan --debug generate command, where no error message will be appear.

Then you can be able to connect to the Wi-Fi by clicking it! (A system restart/reboot might be also good before connecting to Wi-Fi again)

Danny Hamshananth
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1

Worked for me also,I moved the /etc/netplan/filename.yaml(different for everyone) to /tmp. Find your file with $ sudo net plan--debug generate then move it,the wifi should now work.

Peter Kyle
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