Adjusting external monitors brightness in clamshell mode?

Discussion in 'MacBook Pro' started by tirexstorm, Dec 30, 2014.

  1. tirexstorm macrumors regular

    Oct 22, 2007
    Is it possible to use an Apple bluetooth keyboard to adjust an external monitor's brightness when using a rMBP in clamshell mode?
  2. snaky69 macrumors 603

    Mar 14, 2008

    Edit: some more explaining: Brightness on an external screen is controlled by the controller in the external. The macbook will only pass video information though whatever port you choose to use. No "commands" can be sent to the screen that way. If you want to play with brightness, you'll have to use the external's menu buttons.
  3. Altemose macrumors G3


    Mar 26, 2013
    Elkton, Maryland
    Only an Apple display like the Apple Thunderbolt Display will function with the keyboard's brightness keys. Third party displays must be done physically on the monitor.

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