Just recently, my g750jz screen started auto controlling the brightness with the feature turned off for both AC and battery in the power and performance settings. It is subtle, but I can tell, and tested it with AE lock on a camera I have. With the camera exposure locked an image on a dark screen, and the Sam image with a lighter screen expose differently - dark screen goes darker, light screen brightens.

When I uninstalled the Intel graphics card, it stopped, but of course we have to reinstall to use color profiles, adjust brightness, etc.

Anyone else, or any ideas?