Hi,
i'm using the Dell UP2114Q (4K) as external monitor with OS X 10.11. The MacBook is closed.
Why it's not possible, to change the monitor brightness via keyboard (F1, F2)?
Under Windows via BootCamp it works fine.
I took this monitor, since it was specially named by Apple as a supported 4K display.
MacBook Pro (Retina, 15-inch, Late 2013), OS X El Capitan (10.11)
