Beamer presenation without vga-driver??

Is it possible to change some settings in the bios or in the console/terminal to have with vesa-driver a vga-output on a laptop…i mean not dual, just bring the signal from the laptop display to the external-vga port…is this possible and how?

If I boot mine with a beamer connected to the vga-port, all output is going there. Is that what you want.

I think it is not possible without driver…thx for answer