Add more Linux instructions to finding acpi paths

Author: xbjfk

Laptops/laptop-disable.md

@@ -16,28 +16,54 @@ So with laptops, we can hide the dGPU from macOS with the little boot-arg called
 
 Note that this is not needed for install, but recommended for post-install
 
-## 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/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-dGPU-Off.dsl.zip)
 
-Next we need to get on Windows, and head to the following:
+## Finding the ACPI Path
+### Windows
+Head to the following:
 
 ```
 Device Manager -> Display Adapters -> dGPU -> Properties -> Details > BIOS device name
 ```
 
 * Note some GPUs may be hiding under "BIOS device name"
 
-This should provided you with an ACPI path for your dGPU, most commonly:
+This should have provided you with an ACPI path for your dGPU, most commonly:
 
 * Nvidia dGPU: `\_SB.PCI0.PEG0.PEGP`
 * AMD dGPU: `\_SB.PCI0.PEGP.DGFX`
 
 ![Credit to 1Revenger1 for the image](../images/Desktops/nvidia.png)
 
-Now with that, we'll need to change the ACPI path in the SSDT. Main sections:
+### Linux
+Use `lcpci` to find the PCI path of your device:
+
+```sh
+$ lspci -D | grep VGA
+0000:00:02.0 VGA compatible controller: Intel Corporation UHD Graphics (rev 05)
+0000:01:00.0 VGA compatible controller: NVIDIA Corporation TU106M [GeForce RTX 2060 Max-Q] (rev a1)
+```
+
+Make a note of the PCI path of the dedicated graphics card (`0000:01:00.0` in my case).
+
+Then use `cat` to get the ACPI path (substituting `[PCI path]` with the path obtained above):
+
+```
+cat /sys/bus/pci/devices/[PCI path]/firmware_node/path
+```
+
+This should have provided you with an ACPI path for your dGPU, most commonly:
+
+* Nvidia dGPU: `\_SB.PCI0.PEG0.PEGP`
+* AMD dGPU: `\_SB.PCI0.PEGP.DGFX`
+
+## 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/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-dGPU-Off.dsl.zip)
+
+
+Using the ACPI path you acquired, we'll need to change the ACPI path in the SSDT. Main sections:
 
 ```
 External(_SB.PCI0.PEG0.PEGP._OFF, MethodObj)
@@ -57,18 +83,8 @@ With some machines, the simple `.off` call won't keep the card off properly, tha
 
 To start, grab [SSDT-NoHybGfx.dsl](https://github.com/dortania/Getting-Started-With-ACPI/blob/master/extra-files/decompiled/SSDT-NoHybGfx.dsl.zip)
 
-Next we need to get on Windows, and head to the following:
-
-```
-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:
+Using the ACPI path you acquired, we'll need to change the ACPI path in the SSDT. Main sections:
 
 ```
 External (_SB_.PCI0.PEG0.PEGP._DSM, MethodObj)    // dGPU ACPI Path

Manual/dump.md

@@ -17,7 +17,11 @@ So to start, we'll need to get a copy of your DSDT from your firmware. The easie
 * [SSDTTime](https://github.com/corpnewt/SSDTTime)
   * Supports both Windows and Linux for DSDT dumping
   * `4. Dump DSDT - Automatically dump the system DSDT`
-* Do note that all ACPI patches from clover/OpenCore will be applied to the DSDT with the above method
+* sysfs
+  * Run `sudo cat /sys/firmware/acpi/tables/DSDT > DSDT.aml`
+  * Fix permissions: `chown "$(whoami):$(id -gn)" DSDT.aml`
+
+* Do note that all ACPI patches from clover/OpenCore will be applied to the DSDT with the above 2 methods
 
 ## From Clover
 

Universal/plug-methods/manual.md

@@ -9,10 +9,11 @@
 
 ## Finding the ACPI path
 
-To find the ACPI pathing, you have 2 methods:
+To find the ACPI pathing, you have 3 methods:
 
 * [DSDT](#DSDT)
 * [DeviceManager](#devicemanager)
+* [Linux](#linux)
 
 ### DSDT
 
@@ -36,7 +37,7 @@ If we then search for instances of `CP00` we find that its full ACPI pathing is
 
 Now with the pathing, you can head here: [Edits to the sample SSDT](#edits-to-the-sample-ssdt)
 
-##### DeviceManager
+### DeviceManager
 
 If you already have Windows installed on this machine, finding the CPU pathing is fairly easy.
 
@@ -61,6 +62,13 @@ So with the above X299 example, our CPU pathing would be `SB.SCK0.CP00`
 
 Now with the pathing, you can head here: [Edits to the sample SSDT](#edits-to-the-sample-ssdt)
 
+### Linux
+
+Finding the CPU's ACPI path with Linux is very simple. Simply `cat` the firmware_node path:
+```
+cat /sys/devices/system/cpu/cpu0/firmware_node/path
+```
+
 ## Edits to the sample SSDT
 
 Now that we have our ACPI path, lets grab our SSDT and get to work:

Universal/smbus-methods/manual.md

@@ -9,10 +9,11 @@
 
 ## Finding the ACPI path
 
-So to find the ACPI pathing of our SMBus, we've got 2 methods:
+So to find the ACPI pathing of our SMBus, we've got 3 methods:
 
 * [Hackintool](#hackintool)
 * [DeviceManager](#devicemanager)
+* [Linux](#linux)
 
 ### Hackintool
 
@@ -40,6 +41,24 @@ From the above example, we can see the SMBus is located at:
 PC00.SMBS
 ```
 
+
+### Linux
+
+Use `lcpci` to find the PCI path of the SMBus:
+
+```sh
+$ lspci -D | grep SMBus
+0000:00:1f.4 SMBus: Intel Corporation Alder Lake-S PCH SMBus Controller (rev 11)
+```
+
+Make a note of the PCI path of the SMBus controller (`0000:00:1f.4` in my case).
+
+Then use `cat` to get the ACPI path (substituting `[PCI path]` with the path obtained above):
+
+```
+cat /sys/bus/pci/devices/[PCI path]/firmware_node/path
+```
+
 With the ACPI pathing, you can now head here: [Edits to the sample SSDT](#edits-to-the-sample-ssdt)
 
 ## Edits to the sample SSDT