384.90: Can't adjust brightness on Thinkpad P51 with Quadro M2200

As it says above, I can’t seem to adjust the brightness on my Thinkpad in the 384.90 release. It’s stuck at 100%, which is pretty unbearably bright. What options do I have to fix this?

Nevermind. An update for something else remapped my brightness hotkeys. Fixed it, but now I feel dumb, haha.