Quote:
Originally Posted by TorqueDog
The VAIO auto-brightness is for adjusting the brightness of the panel when the ambient light conditions change. The content on the screen shouldn't change a thing where that is concerned.
I suspect there is a feature built into the display drivers similar to that of television sets with dynamic contrast ratios. You'll need to dig around in there.
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Actually, content of the screen can change affect the auto-brightness. The light sensor is usually quite close to the screen, above the keyboard. If the screen moves from displaying a bright image to a dark image, or vice-versa, it can affect how much light is picked up by the sensor.