Add dGPU disabling guide

Laptops/backlight.md

@@ -10,3 +10,9 @@ No configuration required for most, just drop the prebuilt file into your EFI:
    * For Coffeelake users if the regular SSDT doesn't work, try SSDT-PNLF first and do not mix together
 
 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
+
+If Windows has been installed on the device, you can also do the following:
+
+```text
+Device Manager -> Display Adapters -> Properties -> Details > BIOS device name
+```

Laptops/laptop-disable.md

@@ -0,0 +1,78 @@
+# Disabling laptop dGPUs
+
+So with laptops, we can hide the dGPU from macOS with the little boot-arg called `-wegnoegpu` from WhateverGreen. But one small problem, the dGPU is still pulling power draining your battery slowly. We'll be going over 2 methods for disabling the dGPU in a laptop:
+
+* [Optimus Method](/Laptops/laptop-disable.md#optimus-method)
+* [Bumblebee Method](/Laptops/laptop-disable.md#bumblebee-method)
+
+## Optimus Method
+
+How this works is that we call the `.off` method found on Optimus GPUs, this is the expected way to power off a GPU but some may find their dGPU will power back up later on. Mainly seen in Lenovo's, the Optimus method should work for most users:
+
+To start, grab [SSDT-dGPU-Off.dsl](https://github.com/khronokernel/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-dGPU-Off.dsl.zip)
+
+
+Next we need to get on Windows, and head to the following:
+
+```text
+Device Manager -> Display Adapters -> dGPU -> Properties -> Details > BIOS device name
+```
+
+This should provided you with an ACPI path for your dGPU, most commonly:
+
+* Nvidia dGPU: `\_SB.PCI0.PEG0.PEGP`
+* AMD dGPU: `\_SB.PCI0.PEGP.DGFX`
+
+Now with that, we'll need to change the ACPI path in the SSDT. Main sections:
+
+```text
+External(_SB.PCI0.PEG0.PEGP._OFF, MethodObj) // ACPI Path of dGPU
+```text
+
+```text
+If (CondRefOf(\_SB.PCI0.PEG0.PEGP._OFF)) { \_SB.PCI0.PEG0.PEGP._OFF() }
+```
+
+Once adapted to your config, head to the compile section
+
+
+## Bumblebee Method
+
+With some machines, the simple `.off` call won't keep the card off properly, that's where the Bumblebee method comes in. This SSDT will actually send the dGPU into D3 state being the lowest power state a device can support. Creit to Mameo for the original adaptation
+
+To start, grab [SSDT-NoHybGfx.dsl](https://github.com/khronokernel/Getting-Started-With-ACPI/blob/master/extra-files/SSDT-NoHybGfx.dsl.zip)
+
+Next we need to get on Windows, and head to the following:
+
+```text
+Device Manager -> Display Adapters -> dGPU -> Properties -> Details > BIOS device name
+```
+
+This should provided you with an ACPI path for your dGPU, most commonly:
+
+* Nvidia dGPU: `\_SB.PCI0.PEG0.PEGP`
+* AMD dGPU: `\_SB.PCI0.PEGP.DGFX`
+
+Now with that, we'll need to change the ACPI path in the SSDT. Main sections:
+
+```text
+External (_SB_.PCI0.PEG0.PEGP._DSM, MethodObj)    // dGPU ACPI Path
+External (_SB_.PCI0.PEG0.PEGP._PS3, MethodObj)    // dGPU ACPI Path
+```
+
+```text
+If ((CondRefOf (\_SB.PCI0.PEG0.PEGP._DSM) && CondRefOf (\_SB.PCI0.PEG0.PEGP._PS3)))
+                {
+                    // Card Off Request
+                    \_SB.PCI0.PEG0.PEGP._DSM (ToUUID ("a486d8f8-0bda-471b-a72b-6042a6b5bee0"), 0x0100, 0x1A, Buffer (0x04)
+                        {
+                             0x01, 0x00, 0x00, 0x03                         
+                        })
+                    // Card Off
+                    \_SB.PCI0.PEG0.PEGP._PS3 () 
+                }
+```
+
+Once adapted to your config, head to the compile section
+
+## [Now you're ready to compile the SSDT!](/Manual/compile.md)