I am in recovery mode trying to change my desktop environment. I have tried to install some packages during the process. It tells me what packages will be installed and how much space it will take, but then when I press Y to continue, it says
Could not resolve 'mx.archive.ubuntu.com', and finishes a list of errors like that with
Unable to fetch some archives.
Shouldn't I be able to do installs and updates and such from the root shell prompt? The laptop I'm on right now, also running Ubuntu 18.04, can do that fine, so it isn't the connection. How do I enable that or fix that?