Dell Latitude 7390 2-in-1: Trackpad not working at all

[PurpleCrumpets]

Hello,

 

I am really struggling to get my trackpad working on my Dell 7390 2-in-1 using OpenCore.

 

I believe my problem is stemming from my attempt at GPI0 pinning not working correctly. I've followed the relevant guide here for the initial set-up and here for creating a hot patch but I keep getting a kernel panic (see attached). If I don't apply this GPI0 pinning patch, both the VoodooI2C and VoodooI2CHID kexts load as expected, and the touchscreen works as a result.

 

I have been using other people's work with the Dell Latitude 7490 to try and get things working/as a guide but I still can't get the trackpad to work at all.

 

My current EFI and additional information can be found here. Specifically, the _CRS method of SSDT-TDPX.aml file is causing issues (I think).

 

Any help here would be greatly appreciated!

 

 

KernelPanicDetailsandOriginalDSDT.zip

[Jake Lo]

Please post system's specs and your EFI folder here for review. Just the Config and ACPI folder should be enough. Compress and attach. 

No IOREg file found in your post as you had stated in the detail.rtf

[PurpleCrumpets]

Hi Jake,

 

Thanks for your reply!

I've attached my slimmed-down EFI folder below, the kernal panic error message and two IOReg files, one when SSDT-TPDX.aml is disabled, and one when VoodooI2CHID.kext is disabled. In both cases, my Hackintosh boots as expected.

 

 

The main specifications for my computer are as follows:

 

Dell Latitude 7390 2-in-1

Intel i7-8650U

16 GB RAM

Intel 8265 Wifi (works fine), along with bluetooth (also works fine)

13.3" 1920x1080 FHD touch display (gestures work with VoodooI2CHID)

2 x Thunderbolt 3 (Not sure if it works as Thunderbolt, but does work as non-hot swapabble USB-C)

2 x USB 3.1. Gen 1 ports (work fine)

Intel UHD 620 --> PCI\VEN_8086&DEV_5917&SUBSYS_08231028&REV_07\3&11583659&0&10

Integrated webcam - connected via internal USB, works fine

MicroSD card slot - connected via internal USB, works fine

1 x HDMI Port - works fine

 

Dell Touchpad:

- Hardware ID --> HID\VEN_DELL&DEV_0823&Col03

- BIOS Device name --> \_SB.PCI0.I2C1.TPD1

- Manufacturer --> AlpsAlpine

- Location --> on I2C HID Device

EFI.zip

[PurpleCrumpets]

In case anyone stumbles across this post, I managed to get both my trackpad and touchscreen to work correctly! This also includes pen support with palm rejection.

 

Rather than trying to follow the official guide (which I personally did not find helpful), I went through muttonhead411's EFI posted here and found the relevant files for input devices and used those. Further up the forum post is a screenshot of some of the patches needed to make things work.

 

@muttonhead411 - you are an absolute hero and thank-you so much for taking the time to post your EFI and explain what you did so mere mortals like me can ascend!