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Enabling AMD RX 4XX cards in Sierra.

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Has anyone been able to get dual 480s working yet? I only get black screens. I have dual monitors working now on one card with Sapphire RX 480 Nitro 8GB. However, as soon as I add the second card and boot I get black screens.
Hey i know this is unrelated, but how did you get your sapphire nitro working?I have the same card and I edited the x4100.kext and my config but I get a black screen. Do you mind sharing your x4100.kext and config.plist so i can see where i went wrong?
 
Hey i know this is unrelated, but how did you get your sapphire nitro working?I have the same card and I edited the x4100.kext and my config but I get a black screen. Do you mind sharing your x4100.kext and config.plist so i can see where i went wrong?

I have attached my config.plist and AMDRadeonX4100.kext.

"*Make sure to set your mobo bios settings to primary display IGFX (internal graphics, the intel CPU graphics) and set to Auto if possible. My Gigabyte board has the IGFX selection in peripherals menu, and the Auto setting in Chipset menu. you are setting it up to run in integrated graphics mode similar to using a windows format."

Before you boot make sure you have your monitor connected to the integrated graphics first. When Clover loads use your arrow keys to select the appropriate option to boot MacOS. Then switch the cable to your Radeon card and hit return (enter). If you have an extra monitor you may leave a monitor plugged into your integrated card. Enjoy. I hope you get it to work.
 

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I have attached my config.plist.

"*Make sure to set your mobo bios settings to primary display IGFX (internal graphics, the intel CPU graphics) and set to Auto if possible. My Gigabyte board has the IGFX selection in peripherals menu, and the Auto setting in Chipset menu. you are setting it up to run in integrated graphics mode similar to using a windows format."

Before you boot make sure you have your monitor connected to the integrated graphics first. When Clover loads use your arrow keys to select the appropriate option to boot MacOS. Then switch the cable to your Radeon card and hit return (enter). If you have an extra monitor you may leave a monitor plugged into your integrated card. Enjoy. I hope you get it to work.

AHH I have to have it plugged into integrated gfx??? Wow that's super weird I thought the patch would allow me to boot without unplugging and re-plugging :( i'll try it out! thanks
 
I have a quick question. I also game on windows, so my question is with RX480 Nitro 8gb, how do I boot into Windows?
Do I need to change in BIOS graphics card every time for that?
 
My problem is FCPX and iMovie. Both crash immediately upon opening.
My setup:
GA-z97x gaming 7 mobo
4790k
2 x XFX AMD RX 480 8gb

I did the edits to the 4100 Kexts. ATI injected in clover. It boots up fine. Everything works well, even the benchmarks look good. 3 monitor setup is great. My only problem is FCPX. FCPX works fine if only IGFX is used. It worked with GTX 770 before. Crashing happens if either or both RX 480 cards are used. I can even boot with just the IGFX, start FCPX, and then plug in the RX 480 card, drag FCPX window to the AMD connected monitor and it works. But, quit FCPX and reopen... crashes.
Any clues where to look next?
 
My problem is FCPX and iMovie. Both crash immediately upon opening.
My setup:
GA-z97x gaming 7 mobo
4790k
2 x XFX AMD RX 480 8gb

I did the edits to the 4100 Kexts. ATI injected in clover. It boots up fine. Everything works well, even the benchmarks look good. 3 monitor setup is great. My only problem is FCPX. FCPX works fine if only IGFX is used. It worked with GTX 770 before. Crashing happens if either or both RX 480 cards are used. I can even boot with just the IGFX, start FCPX, and then plug in the RX 480 card, drag FCPX window to the AMD connected monitor and it works. But, quit FCPX and reopen... crashes.
Any clues where to look next?

Figured it out.
Changed system def to 15,1 (from 14,2). The 15,1 more closely fits my hardware. Also, changed config.plist to "false" for inject ATI & Intel. Just did the 4100 kext edit alone.
Now FCPx and iMovie work fine. I have dual XFX RX480 cards driving 3 monitors in MacOS Sierra 10.12.1.
DP = 4k monitor
HDMI to DP adapter = 1080p monitor
HDMI = 1080p monitor
Scaling works beautifully. I have all 3 monitors plugged into a single card right now and in Win 10 can run crossfire. I keep the IGFx DVI to HDMI plugged into a second port on my 4k monitor and use the Picture in Picture feature to see the IGFx during boot.

BruceX test = 11.7 seconds

Screen Shot 2016-11-19 at 18.09.28.png Screen Shot 2016-11-19 at 18.16.12.png
 
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Hello I just got my mackintosh to work but I am running on a rx 480 gaming x 4g from msi but it is showing as a r9. My screen is flickering to really bad. Also I can not find system/library/extensions... can I enable that or what can I do about al those things.

i hopen you guys can help me.

bjarne
 
Hello!
For a week I suffer with my new ASUS ROG Strix RX 480. Spoofing does not help, as before a black screen.

There are chances to make it or get in the future?
 
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