macbook pro display wont dim after upgrade to high sierra
After upgrading to High Sierra, my Macbook pro dimming no longer works. Initially it was very dim. I zapped the pram several times, and now it's nice and bright, but the dimming still doesn't work (i.e. using the dimming function keys). I've tried turning on an off "automatically adjust brightness" and it has no effect. Night shift is turned off. Automatic Graphics Switching is turned on
I'm running:
High Sierra 10.13.2 (17C88)
MacBook Pro (Retina, 15-inch, Late 2013)
2.3 GHz Intel Core i7
16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB
MacBook Pro (Retina, 15-inch, Late 2013), macOS High Sierra (10.13.1)