Mojave dual-GPU setup - Screen Flickering after Monitor wake

Hi there!

Problem: after having monitor shut off because of energy savings the re-waking ends up in "screen-on"-"screen-off"-loop. When I turn off the monitors manually and turn them on again the flickering is minimized. A real solution is normally only rebooting. One GPU is connected to on Monitor

The Specs:

  • Gigabyte GA-Z97X-Gaming3 Mainboard
  • 3.2 GHz Intel Core i5 (4th Gen)
  • 2x RADEON RX 570
  • HDMI High-Speed with Ethernet Cable
  • 2x Samsung LU28E590DS 4K Monitor (3840x2160 60hz)
  • Mojave 10.14.3 (18D42)
  • Clover Config: dart=0, KernelPM, Apple RTC, AppleIntelCPUPM
  • Kext: AppleALC, CPUFriend, FakeSMC, Lilu, WhateverGreen
submitted by /u/Frank1789
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