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Massive overhaul(hopefully helps new users a bti)

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Mykola Grymalyuk
2020-05-30 23:54:37 -06:00
parent 1f776dfb8c
commit 0c2d4b492d
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Laptops/backlight.md
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# Fixing Backlight
# Fixing Backlight (SSDT-PNLF)
So what this SSDT does is create a PNLF device for macOS to play with, specifically one with a hardware ID of `APP0002`. WhateverGreen will handle the rest of the work
* [What this SSDT does](#what-this-ssdt-does)
* [Methods to make this SSDT](#methods-to-make-this-ssdt)
No configuration required for most, just drop the pre-built file into your EFI:
## What this SSDT does
* [SSDT-PNLF](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/compiled/SSDT-PNLF.aml)
* For most users
* [SSDT-PNLF-CFL](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/compiled/SSDT-PNLF-CFL.aml)
* For Coffee Lake and newer
The purpose of this SSDT is to create a PNLF device for macOS to play with, specifically one with a hardware ID of `APP0002`. Luckily WhateverGreen will handle the rest of the work for us.
Note: there are some rare cases where the iGPU is called `GPU0` or `VID`in the DSDT, you can double check by searching for `PCI0.GFX0`, `PCI0.VID` and `PCI0.GPU0`. Whichever shows up is your device
## Methods to make this SSDT
If Windows has been installed on the device, you can also do the following:
For the backlight fix, there are 2 methods you can choose from:
```text
Device Manager -> Display Adapters -> Properties -> Details > BIOS device name
```
* Note some GPUs may be hiding under "BIOS device name"
![Credit to 1Revenger1 for the image](/images/Desktops/nvidia.png)
* [Prebuilt](/Laptops/backlight-methods/prebuilt.md)
* [Manual](/Laptops/backlight-methods/manual.md)