mirror of
https://github.com/AskDavis/Getting-Started-With-ACPI.git
synced 2026-01-02 11:59:48 -08:00
63 lines
2.1 KiB
Markdown
63 lines
2.1 KiB
Markdown
# Fixing Power Management
|
|
|
|
**Intel CPUs only**
|
|
|
|
CPU naming is fairly easy to figure out as well, open your decompiled DSDT and search for `Processor`. This should give you a result like this:
|
|
|
|
|
|
|
|
As we can see, the first processor in our list is `PR00`. This is what we'll be applying the `plugin-type=1` property too. Now grab [SSDT-PLUG](https://github.com/acidanthera/OpenCorePkg/blob/master/Docs/AcpiSamples/SSDT-PLUG.dsl) and replace the default `CPU0` with our `PR00`. There's a couple things to note:
|
|
|
|
* There's 2 mentions of CPU0 to change
|
|
* The `PR` path may need to be changed, in our example we can see that our `PR00` has `SB` in front.
|
|
|
|
So in our final example, we'd have `_SB_.PR00` and `\_SB.PR00`
|
|
|
|
There are also some edge cases with `Processor`, specifically on HEDT series like X79, X99 and X299. This edge case is that the ACPI path is much longer and not so obvious:
|
|
|
|
|
|
|
|
If we then search for instances of `CP00` we find that it's ACPI path is `SB.SCK0.CP00`:
|
|
|
|
|
|
|
|
So for this X299 board, we'd change `\_PR.CPU0` with `\_SB.SCK0.CP00` and `External (_PR_.CPU0, ProcessorObj)` with `External (_SB_.SCK0.CP00, ProcessorObj)`
|
|
|
|
|
|
```text
|
|
External (_PR_.CPU0, ProcessorObj) <- Rename this
|
|
|
|
Scope (\_PR.CPU0) <- Rename this
|
|
{
|
|
Method (DTGP, 5, NotSerialized)
|
|
{
|
|
If ((Arg0 == ToUUID ("a0b5b7c6-1318-441c-b0c9-fe695eaf949b")))
|
|
{
|
|
If ((Arg1 == One))
|
|
{
|
|
If ((Arg2 == Zero))
|
|
{
|
|
Arg4 = Buffer (One)
|
|
{
|
|
0x03
|
|
}
|
|
Return (One)
|
|
}
|
|
|
|
If ((Arg2 == One))
|
|
{
|
|
Return (One)
|
|
}
|
|
}
|
|
}
|
|
|
|
Arg4 = Buffer (One)
|
|
{
|
|
0x00
|
|
}
|
|
Return (Zero)
|
|
}
|
|
```
|
|
|
|
## [Now you're ready to compile the SSDT!](/Manual/compile.md)
|