I have an Ubuntu 10.10 Server box with a Digital VT220 connected over a serial line. (That's a real VT220, not a virtual one. An actual beige CRT thing.)
It works great apart from the fact that Ubuntu is sending it UTF-8, so occasionally you get a weird character in place of a normal one, because the VT220 doesn't support UTF-8.
Can I configure Ubuntu to use ASCII or ISO 8859-1 only on the serial line? I don't know if it's a getty option or otherwise.