I upgraded my tablet yesterday and now the adaptive brightness doesn't work. It automatically updated to the latest generic Intel HD 4000 drivers via windows update but they don't support brightness control at all. Tapping the brightness button in the action center does nothing. I tried to reinstall the Windows 8.1 drivers but stupid samsung does not provide drivers except through their POS samsung update software, which of course is not compatible with Windows 10. I can only find Windows 8.0 drivers and they don't seem to fix the problem. I think I remember having this issue with Windows 8.1 but the samsung updater had a Windows 8.1 specific patch that fixed the problem. I emailed samsung but I'm not expecting them to be very helpful. Anyone here have any ideas? My retinas are burning!