Brightness control fails on Mac mini M1 with Tahoe 26.3
Brightness control does not work Mini Mac M1 chip with Tahoe 26.3
Question marked as
What Display(s) are you using with the M1 Mac mini...?
The Keyboard and System Brightness Controls do not function with after-market Displays.
You'll need to use the after-market displays on screen controls to adjust or lower the brightness.