Mojave working fine but can't boot from RX560

Hi there.

My Setup:

  • Intel i3-8100
  • 16GB RAM
  • Gigabyte Z390-I AORUS PRO WiFi (ITX)
  • Sapphire Pulse Radeon RX 560 4GB
  • SanDisk 512GB SATA SSD

I have a Mojave installation that is mostly working smoothly. Audio, Networking etc. is working fine, but i could not get the integrated Intel UHD630 to be accelerated (UI is slow-ish, some graphical glitches in Safari and UHD630 showing only 31MB RAM). I tried some tricks to get the UD630 activated, but nothing worked.

So i bought a RX 560 because i was told it is supported out of the box in Mojave, without any kexts. However, i can't get the machine to boot after i installed the card. I get a picture and see the initial Apple Logo during boot, but the screen goes black halfway through the boot process. I tried adding Lilo+WhateverGreen to kexts, but that did not help. I am using HDMI port of the RX 560 connected to a 4k Screen.

Any ideas what is going wrong? Suggestions for a GPU card that is known to work out of the box in Mojave?

submitted by /u/DavidVanPatten1
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