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My external keyboard doesn't have the brightness key but it comes with an fn button. I tried a bunch of key combination with the fn key + the f keys and I found out how to raise the volume up and down (fn+f11 or f12) but not brightness.

I know that the easiest way is to use the laptop's keyboard but mine is a Lenovo yoga 720, so when it folds, you no longer have access to its keyboard so that's why I would really like that functionality with an external keyboard if possible.

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    What is the external keyboard that you use? If it doesn't have any designated multimedia keys for adjust screen brightness, you might have to use a third-party program/script to capture your desired combination and send the relevant key code to the OS.
    – fragamemnon
    Commented Apr 1, 2018 at 7:58
  • @fragamemnon, I'm using a logitech k360 keyboard. Do you think I can achieve something like this with autohotkey?
    – answerSeeker
    Commented Apr 1, 2018 at 19:33
  • Yeah, certainly. autohotkey.com/board/topic/… should help.
    – fragamemnon
    Commented Apr 2, 2018 at 8:26
  • It also may be worth checking out EasyMCC which would circumvent the hardware issue
    – Arctiic
    Commented Oct 22, 2020 at 22:56

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I agree with RuSh. Some multimedia external keyboards do their own functions, so even though a lot of laptops use Fn+F5 & Fn-F6 for decreasing/increasing brightness your keyboard and it's respective drivers may utilize different keys. For example, my Microsoft Wireless Sculpt Ergonomic Keyboard has a completely different set of functions, so I have to rely on the options outlined in the previous post.

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