I just bought a basic Dell Inspiron 570 Desktop, and installed Ubuntu 9.10, and found that the wired internet won't connect. I've checked the wire, and confirmed that an Ubuntu laptop can get a wired connection using it, but the new Inspiron doesn't do anything.
The "Network Connections" dialog shows a "Wired connection 1" item, but Network Manager refuses to connect to it. ifconfig only shows the lo interface.
How can I get this wired interface working? Please, this is very frustrating. I can only assume it's some sort of driver issue (which seems rare with the wired connection), but I can't even run an update since I don't have an internet connection.