Hey guys, after following Herve's guide on the forum for this specific laptop (albeit with an i5 instead of the i7), and using the Catalina pack he graciously provided, I seem to be having quite a few issues even getting to the installer..
Booting via USB2.0 works, when the installer doesn't kernel panic... Booting from USB3.0 gives me the infamous "Still waiting for root device" followed by the no access sign on screen. I know from past experience that USB2 fixes this, so I had to use my phone's USB-C to USB2 adaptor to get this to work hahaha!
Now, upon the first successful boot to the installer, I noticed that the keyboard and trackpad had stopped working (confirming that it was still responsive afterwards when I plugged my mouse in to begin the installation anyway). The installation succeeded, however booting into the installation caused a kernel panic every time.
To summarise:
I have a Latitude 7490 with the i5 8350u CPU
Dell 1820A WiFi card (works flawlessly in the macOS installer)
I'm using the Catalina pack Herve provided, implemented by dragging the kext, acpi and config.plist files into their locations in the EFI folder
USB3.0 boot doesn't work
Keyboard and trackpad do not work
Kernel panics left right and centre (its been a while so if someone could point me out how to pull the log or stop it from rebooting on panic that would be nice!)
I'm using Herve's BIOS settings, on the same BIOS version.
Thanks!
Humza