Can't Install Kubuntu Because it Says Ethernet is Disconnected

[Breachlove]

This is a fresh build with an asus x870 P-csm motherboard and a very much live wired connection right into the wall. It's the same cable and plug I used on my old PC. The installer says it's disconnected and I'm now stuck. I don't know why the OS needs a Network connection to install in the first place.

[oshunluvr]

Do you have an internet connection before you launch the installer? Like, choose "Try" instead of install and see if the network is up. If not, you probably need a specific driver or setting or your ethernet device isn't supported by the kernel.

You didn't say which version of Kubuntu or what ethernet device you have.

I think the installer wants to check for updates during installation.

[Qqmike]

And, as always, try unplugging the cable from the modem, wait 20 seconds, plug it back into the modem.