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Tường Nguyễn

Dell 7480, help me!!!

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Is the Brightness Slider bar showing in Display Preference?

Does it work when you slide it back and forth?

You'll need to set the Fn keys with Karabiner-Elements.app to use F11 and F12 to control the slider

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try upgrading Lilu.kext and AppleALC.kext

Might be a known issue for VoodooI2C.kext

See here, you'll have to go through the chat for more info from anonymous-writer.

 

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