Hello! I'm having an issue with the screenpad that doesn't work!

[parkhongmin-926]

Hi, thank you for working on the model I have.

I installed macOS Ventura 13.6.9 version normally through the EFI you uploaded.

Most features work!
However, there are some features that don't work.
It is as follows:

1. Bluetooth -> I'll look for it a little more and fix it.
2. Screen Pad and Touch Pad

In the case of the screen pad, it displays like a bad connection like the picture uploaded, and the touch pad used instead of the mouse does not work at all.

I'm wondering what steps I can take in these cases!

Thank you for reading it.

[parkhongmin-926]

If you need any more specific information, please leave a comment it. i will give it immediately

[Maleficent-Magik]

Hello! Thanks for your feedback! Indeed, this problem is one of the main drawbacks of this model. The problem of the screenpad “sizzling”.

We've already opened a topic about this problem, so I'll let you have a look here: #4

This problem has been around since August 15, 2022, and ideas have already been proposed without success. Only one person has managed to make it work, but decided to play dumb and not divulge the solution...

[Qonfused]

Sounds like the trackpad is dead pretty much immediately, which suggests that the GPIO pin the driver is using isn't being used by the trackpad.

For now, I'd disable GPIO pinning by adding the -vi2c-force-polling boot arg in your config.plist which essentially falls back into the driver's "safe mode".

You may be able to try another GPIO pin if you modify the pin value used in the SSDT-GPIO.dsl file. Currently what is listed is 0x55 but you can try any one of 0x17 or 0x34 as well.

[parkhongmin-926]

Sorry, I didn't understand the exact meaning of changing from 0x55 to 0x17, 0x34. If you look at the file on the link you gave me, it says 0x0055 on L37, do you mean to change it to 0x0017 or 0x0034?

[Qonfused]

Exactly, yes. You can also change it to the shorter form 0x55 if you prefer. When you build the project it should output an updated SSDT-GPIO.aml file in the dist/EFI/OC/ACPI folder.

[parkhongmin-926]

Sorry, I did "0x0017", "0x0034". but nothing changed. What should i do next step? I simply modified that string 0x0055, I don't know if I did it right, I just simply pasted it with EFI folder and rebooted it, but I don't know if I did it right.

[Qonfused]

You'd have to re-build the project or compile the .dsl file; what you want in the ACPI folder is the output .aml file.

Though as a fallback, you can use the -vi2c-force-polling argument but it will probably have very buggy behavior.