Computer Installation setup (user/password screen)

I have a question about a mac that boots up for an installation. The computer is connected to a projector with the lid closed on the mac. I have a scheduler working great turns on and off once a day. The projector automatically turns off after no signal for a bit, then in the morning when the mac is boots up and runs the app someone turns on the projector when they get to work.

The problem is when the projector is turned on its is shows the user/password screen. Like it goes to sleep or something and prompts for a user/pass when the projector turns on. I have the computer set to automatically log in. Any thoughts why this would be happening?

T

check the privacy preferences in the system preferences. There is a thing for changing this behavior.
best