MoldyJuice Posted January 13, 2020 Share Posted January 13, 2020 I have recently upgraded a hackintosh workstation at my work to Mojave. As a result I had to replace the nvidia titan that was in the system with an XFX Radeon VII. With one monitor the system works fine, graphics acceleration is enabled and I get good benchmark results. Unfortuantly as soon as I hook up a second monitor both the dispalys either go black or flash in and out with colour and graphical glitches. I have tried everything I can find on the internet to solve this from whatevergreen commands, to custom Vbios, SMBIOS changes, etc. but nothing has managed to fix it. Any help would be greatly appreciated! Im updated to the latest security update with 10.14.6 System specs i7 8700k 48gb ddr4 2400 asus prime z370-a xfx radeon vii also included is a copy of my efi folder CLOVER.zip Link to comment https://www.insanelymac.com/forum/topic/342102-radeon-vii-dual-monitor-mojave-blackscreens/ Share on other sites More sharing options...
iCanaro Posted January 14, 2020 Share Posted January 14, 2020 change SMBIOS iMac19,1 other test disable iGPU BIOS set SMBIOS ImacPro1,1 test boot-args -wegoff flag inject ATI flag radeondeinit Link to comment https://www.insanelymac.com/forum/topic/342102-radeon-vii-dual-monitor-mojave-blackscreens/#findComment-2704191 Share on other sites More sharing options...
MoldyJuice Posted January 14, 2020 Author Share Posted January 14, 2020 15 hours ago, iCanaro said: change SMBIOS iMac19,1 other test disable iGPU BIOS set SMBIOS ImacPro1,1 test boot-args -wegoff flag inject ATI flag radeondeinit Thanks for the responce I tried all that but still to no avail. When I turned the whatevergreen off and injected ati w radeondeinit I can't even get the main monitor to work. Link to comment https://www.insanelymac.com/forum/topic/342102-radeon-vii-dual-monitor-mojave-blackscreens/#findComment-2704264 Share on other sites More sharing options...
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