Hackintosh Laptop Brightness Minimum Blackscreen fix

My hackintosh had a problem with the screen going black when the brightness of the screen was minimized. So I googled and found a solution.

 

GitHub - acidanthera/WhateverGreen: Various patches necessary for certain ATI/AMD/Intel/Nvidia GPUs

 

The answer was in the details of whatevergreen. Let's click the link below.

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https://github.com/acidanthera/WhateverGreen/blob/master/Manual/FAQ.IntelHD.en.md#customize-the-behavior-of-the-backlight-smoother-to-improve-your-experience

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That page has a solution to the display going black at minimum brightness. Look where the red line is drawn.

 

 

Add two elements in opencore's Device Properties, pclRoot(0x0)/Pcl(0x2,0x0). enable-backlight-smoother is simply an element that determines whether to use or not, and backlight-smoother-lowerbound determines the minimum brightness.

 

 

The brightness value can be specified from a minimum of 0 to a maximum of 2^32 -1. The corresponding value is used after converting decimal to hexadecimal with 'Decimal to Hexadecimal converter'. Please refer to the site below.

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Decimal to Hexadecimal Converter

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For example, if you want to determine the minimum brightness value as 32, convert 32 to hexadecimal. Changes the front and back of the value of the 4 digits below. If it is 0020, convert it to 2000. And add 0000 at the end. The final value is 2000000, and input this as the value of backlight-smoother-lowerbound.

 

 

Now, even with the minimum brightness setting, the laptop screen will not go black. The optimal minimum on my laptop was 16. I hope the readers of this article will also find the optimal value through experimentation. Then it's over.