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Update: Running with the RX 560 installed resulted in a day of frequent issues where the display locked up and I had little option but to reboot. Happened perhaps a dozen times over the course of the day. I noticed various screen artifacts, but also noticed some fairly long periods - over an...

So far so good. That may have done the trick - indeed it makes sense that it should do the trick.

Many thanks for your help. Testing that now.

In case it's helpful, here's a copy of the ioreg file.

config.plist posted above. Latest versions of Lilu and WhateverGreen kexts installed in L/E. Mobo BIOS updated, Mojave updated to 10.14.1.

Thanks for the quick reply. How do I set the iGPU to be connectorless?

So I installed the RX 560, plugged my Apple LED Cinema Display into the DP port (using a small miniDP > DP adapter cable, which works fine with when using internal HD630 graphics) and rebooted. The RX 560 appears to work fine, but after just a few minutes use I can see visual artifacts on-screen...

Thanks. It's a Sapphire Pulse RX 560 with 4GB, so hopefully should work.

Having had no success in getting dual displays working in Mojave with HD630 graphics I'm getting a Radeon RX560 card. Can anyone point me to a useful resource that might guide me through the process to get this up and running? I'm using Whatevergreen and Lilu at present with some framebuffer...

Try changing your SMBios to 18,1 or 18,2 (I had mine set to 18,2 originally and got lots of screen flickering, which went once I changed to 18,1).

Interesting. I'll give this a try. I did set SMBios to 18,2 when I first updated to Mojave, but it caused a lot of screen flickering issues which immediately went away whenI reverted to 18,1. However, that was prior to implementing this whatevergreen kext so maybe things have changed as a result...

So here's what I'm trying to achieve: 1. Adopt the use of the Lilu and Whatevergreen kexts as the new standard approach. I followed the guide and it all seems to work fine for my set-up, with a single DP display plugged in. 2. Get a dual display arrangement working, i.e. add a second display...

In terms of sleep/wake, post #1 seems to suggest that by disabling unused connectors it may be possible to enable sleep/wake. I'm guessing you've tried that approach?

Did you get this resolved? I didn't see a response to your post, and I've got a similar set-up (and am similarly confused about how best to patch. In my case I have 3 ports on the mobo (DVI-D, DP and HDMI), and want to know how to patch so that I run my DP monitor and a second display on HDMI...

This post suggests that it is possible to run a dual display using HD630 graphics? Can anyone confirm this? I've been trying to get his working for some while now. My experience is that it works with a clean install (at least it did for me with 10.13), but then as soon as I update it breaks the...

I had the flickering display issue as well after updating. Modifying my smbios from 18,2 to 18,1 appears to have resolved it.

I've just run the update and now my second display (HDMI) causes the whole machine to hang or reboot when I turn the monitor on. The primary monitor uses displayport. Prior to the update I would turn on the second display once the machine had fully booted up and it would work fine. I don't think...

I removed the files and installed SSDT-HDEF-HDAS-2.aml. My dual screen set-up promptly stopped working! (Currently running with my Displayport monitor only, turning on the HDMI monitor after booting to the desktop no longer works). Been trying to redress that problem without success, hence the...

Trying to get dual monitors working on my system (Kaby Lake, H270 mobo, HD630). My DP monitor works on port 0x5 (FB@0), my HDMI display works on port 0x6 (FB@1), but I can't get them both to work together. If I boot with the DP display and then turn on the HDMI display it reports 'out of range'...

All files attached. I can find no log entries that match: "Console/All Messages/kernel Sound Assertions - select/Save Selection As:" Using speakers and mike in Apple LED Cinema Display. Aiming to connect 2-wire SPDIF header to external DAC via coaxial using a fitted SPDIF out module. As noted...