PDP-8
Hmm.. that’s weird. The unscientific guy in me wonders if logging out and logging back in while live will wake that up.
Also good to know: IPV6 by default is disabled, I guess since this is not designed for the data center, but for the average joe behind a router. If what you are connecting to is needing that, maybe check the ipv6 tab when you go in and edit the connections via the gui away from “disable” or “ignore”. While there, if one is seeing only 100mb speeds, we can go into the manual tab for that and force it to 1000 / 1gb.
I’ll have to boot with one live later and see if I can duplicate your issue. I wonder if nmcli at the terminal might yield a clue..