How to Fix ALPS Touchpad "Invalid or Bare Packet" Error on Hackintosh (Dell Inspiron, macOS Catalina)

How to Fix ALPS Touchpad Not Working on Dell Inspiron Hackintosh (macOS Catalina)

The error ApplePS2ALPSGlidePoint: an invalid or bare packet has been dropped means the ALPS touchpad driver is receiving malformed data. This is common on Dell Inspiron laptops running macOS Catalina via OpenCore.

Step-by-Step Fix:

1. Identify your touchpad model: On Windows, open Device Manager → Mice and other pointing devices. Note the exact ALPS model (e.g., ALPS U1 Dual, ALPS V8, etc.).
2. Use VoodooPS2Controller: Download the latest VoodooPS2Controller from the Acidanthera repository. Place VoodooPS2Controller.kext in your EFI/OC/Kexts folder.
3. Remove conflicting kexts: Ensure you do not have both VoodooPS2Controller and ApplePS2SmartTouchPad loaded simultaneously. Remove any duplicate touchpad kexts.
4. Add SSDT-XOSI: Some Dell laptops need SSDT-XOSI to spoof the operating system identifier so the touchpad operates in the correct mode. Add it to EFI/OC/ACPI and enable it in your config.plist.
5. Set PS2 properties: In config.plist under DeviceProperties, you may need to force the ALPS protocol version. Check the VoodooPS2 documentation for your specific model.
6. Rebuild kext cache and reboot: After making changes, reset NVRAM from the OpenCore picker and restart.