Update to macOS High Sierra 10.13.4
I approached this with some concern because
the update thread here was buzzing with the problems caused by it.
I waited for a while after downloading the combo Apple updater (it hasn't appeared in my Mac App Store over here in the UK yet) and kept reading ...
The most common concern seemed to be USB 3.0 ports not working. Happily this has been resolved with a new config.plist patch for which
the details are here (thanks
@bogdanw ). The other - duplicated iGPU detection - doesn't apply because the Auto BIOS setting turns off the iGPU when a discrete GPU is detected.
So to prepare for the update I pre-edited my config.plist to add the extra code. Then took my chances and installed.
I'm happy to report everything went ok. The only thing not working after the process was complete, was motherboard audio. There was no device present. To fix I just ran MultiBeast 10.2 and re-installed the main Realtek ALC892 patch again (the other patches are already present in config.plist so no need to duplicate them).
Sound returned.
Note the Lilu/Whatevergreen fix is still in place and working and I'm currently using the 1.1.4 version of Whatevergreen. There were *no* RX 560 problems at all. You'll also notice it is now recognised completely correctly too. Because of this I will experiment with rebooting without the kexts and if it comes to light they are no longer needed etc. will edit this post accordingly.
Edit:
As promised I've experimented with various options and it *seems* the RX 560 is now recognised natively. I removed the two kexts - Lilu and Whatevergreen AND set RadeonDeInit to False in the config.list.
Just about everything works with one exception and the card is recognised correctly in About this Mac. The one exception is that without the two kexts HDMI audio isn't available. With, it is.
This feels like a real break-through for the RX 560 and
there is now a thread dedicated to using one.