MacBook Air brightness...
my screen brightness has been automatically dimming by 20-30% each and every time the computer either wakes from sleep or returns from a lock screen after a few minutes of inactivity. This is despite having "automatically adjust brightness" turned off in Display Settings. This means that I need to manually adjust the brightness, each time I step away from the computer, which is quite annoying. I heard to "reset the smc and nvram" but I did some research and it says it may work but it can also risk my MacBook, and I dont want to do that! It also turns the screen on with the brightness I left it but it dims after 1 second, I never had this problem before.