Surface 3 screen not dimming

[Moonsurface]

My husband's Surface 3 has a strange problem where the screen brightness doesn't change even though the on screen indicator seems to show the slider going up and down. Auto-brightness is switched off.

Anyone have any thoughts?

 

[hughlle]

Seems to be a regular occurrence for me. One insider build it is fine, the next it is not. Doesn't bother me, but does seem like a pretty silly thing not to be able to get right.

 

[GreyFox7]

I had problems occasionally on production builds of 8.1 and 10 after a reboot it would be on max brightness but it would let you adjust it... I guess they fixed that.

 

[Moonsurface]

He's on Windows 10 regular not insider build