@GusD
I followed Loco Massa's Oct 4 instructions exactly: http://www.insanelymac.com/forum/topic/315027-amd-r9-390-framebuffer-issue-on-1012-sierra/
No deviation whatsoever.
Besides making the iGPU primary in the BIOS and giving it 128mb ram, I followed standard BIOS settings per...
Thank you so much onkz and others. I got it working perfectly (no graphical issues whatsoever) on my Gigabyte r9 390 with DisplayPort. I'm so excited because I thought I had to use HDMI and sacrifice 60hz refresh rate on 4k.
The key for me was this:
Does anything know why it's reporting...
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