I'm using a single nvidia Quadro FX 3700 card on my system. This thread: How to set up a multiseat system? suggests that changes should be made to the lightdm.conf and xorg.conf files. When I made ...
Ubuntu used to support multiseat (that is multiple monitors, multiple keyboards and mice, all hanging off a single computer) pretty well once upon a time. Support wasn't an official feature but gdm ...