AutoDimmer not dimming completely

[_V_]

Hey again folks

So I set the dimming to 1.0 ( even tried a higher number ) but thr screen is still pretty bright in the hallway. The dimming function works in general but like said, its not completely black like mentioned in the doc.

I also reduced brightness of my screen just to double check, but that wasnt it.
Any ideas or is it just not possible to darken the screen to the “off” level?