Casey,
Thanks for the tips.
- BIOS —> Thunderbolt Security —> No Security - YES, SET
- BIOS —> GPIO3 Force Pwr —> Yes or Enabled YES, SET
- CLOVER/ACPI/patched folder —> Do you have DTPG.aml? YES - SSDT-DTPG.aml
I appreciate you looking into this further. Also, side note, my LG UltraFine 5K is not just reporting at 4K resolution. It had been in 5K before but seems like deleting NVRAM or something else kicked it out of 5K mode.
UPDATE:
It's working now. Here's what I just did....
1.) Booted Hackintish into Windows (have separate SSD with Win10 install)
2.) Installed Windows Thunderbolt software from Gigabyte's website
3.) Verified that Thunderbolt capabilities worked in Windows - it does - camera, USB, audio etc
4.) Then updated LG 5K UltraFine drivers via the LG Mac store app on my real MacBook Air 2018. The software was out of date so updated.
5.) Plugged back into Hackintosh, rebooted into Mojave and working now.
My guess is this is related to the monitor driver update but who knows. There is a lot of talk about Thunderbolt, Windows, warm booting, cold booting etc. Will continue to test...
UPDATE 2:
So there is something to this booting into Windows... Cold booted (shut down, turned off power) and booted back into Mojave - Bam - Thunderbolt NOT working on monitor. So warm booted back into windows, approved the LG 5K in Windows Thunderbolt software, warm booted back into Mojave, and Thunderbolt working again. I swear I don't have security on in the BIOS so I don't understand this behavior 100%.
Attached is an image of the Windows Thunderbolt software
UPDATE 3:
Yes, I can do this repeatedly. Now, I haven't heard of anyone else reporting that they had to go into Windows and approve the device to get it seen in macOS. Maybe this is exclusive to the 5K LG idk.