RUNNING LINUX OVER A SERIAL CONSOLE

* GRUB: Put this near the top of /boot/grub/menu.lst:
    serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
    terminal --timeout=10 serial console
* KERNEL MESSAGES: Use this kernel option:
    console=ttyS0,115200,8n1
  (For Debian/Ubuntu, append this to # kopt and run update-grub.)
* LOGIN: If you are using Upstart (Ubuntu, recent Fedora), create
  /etc/event.d/ttyS0 analagous to the existing /etc/event.d/tty*.
  Otherwise, add this to /etc/inittab:
    T0:2345:respawn:/sbin/getty -L ttyS0 115200 linux

-Anders

Known issues:

* Curses applications often generate annoying messages like this one:
    [  204.339863] serial8250: too much work for irq4