I have a Dell XP 16 with DisplayPort, HDMI, VGA, and of course the built-in screen. I've tried attaching two external screens, one to VGA and one to HDMI, but the drivers only seem to allow two displays to be running at a time: either the two external, or the built-in display and one external.
This particular model is configured with an ATI Radeon HD 3670.
Any thoughts / suggestions would be GREATLY appreciated. Thanks in advance!