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I have a Mac mini. I am using a Lenovo ThinkVision Pro2840m, connected via DP, as my monitor. I am using the Magic Keyboard. Can anyone please tell me the procedure to make the display brightness controls work with this monitor right from my keyboard? The screen brightness shortcuts, and the volume buttons are not working. I'm running OS X El Capitan.

  • Have you tried pressing the fn key in conjunction with F1 or F2 for brightness and F11 or F12 for sound? – user3439894 Feb 14 '16 at 23:56
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Third-party monitor brightness can't be changed by using the Magic Keyboard keys. You'll have to use the settings on the monitor.

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It's likely you can't, but just to double check, can you confirm you have the option of adjusting display brightness in the Display pane of System Preferences?

Most 3rd party monitors don't support external brightness adjustment via DP or HDMI. The same is likely the case with the sound if the speakers are integrated into the monitor.

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  • Nope, that option is not present in the display pane. – Abhishek Sha Feb 16 '16 at 19:12
  • That what I thought, it means the OS can't control the brightness on that monitor. Likely it's the same for the sound volume. – Todd Dabney Feb 16 '16 at 20:41

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