AskDavis/Getting-Started-With-ACPI
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Avery Black
2021-05-02 12:30:29 -07:00
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Laptops/trackpad-methods/manual.md
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## Checking GPI0
This page assumes that you have macOS installed as well as [IORegistryExplorer](https://github.com/khronokernel/IORegistryClone/blob/master/ioreg-302.zip)
The first thing which should be checked is the GPI0 device, which is required for VoodooI2C. The best way to check this is working is to use IORegistryExplorer.
![](../../images/Laptops/trackpad-md/gpio-enabled.png)
Here, we can see that VoodooGPIO is attached to GPI0 so no edits are needed for GPI0. If this is the case for you, you can skip to the [next section](#Enabling-Trackpad).
Here, we can see that VoodooGPIO is attached to GPI0 so no edits are needed for GPI0. If this is the case for you, you can skip to the [next section](#enabling-trackpad).
If VoodooGPIO isn't attached, then you may need to modify the `_STA` method in the `GPI0` device. In that case, you will need to find the GPI0 device in ACPI.