> After I set up sshd, I can't type anyting in gdm's greeter. My touchpad 
> mouse works howerver. Here are my settings:

This sounds like gdm started up before getty, and picked a vt device that
later getty want's to handle.

Please make sure you have the vt specified in /usr/X11R6/etc/gdm/gdm.conf:

0=/usr/X11R6/bin/X vt5

and you don't run getty on /dev/tty/E4 (see /etc/ttys). Note that X starts
numbering vts at 1, while /dev/ttyE* starts at 0.

Martin