Radeon Compatibility Guide - ATI/AMD Graphics Cards

[zakklol]

Hello!!
Request for help.
I used GTX 1050 on Mac OS 10.13.6 - everything worked well. I changed the video card to rx 470, after loading a have black screen. How to fix??

Enable RadeonDeinit in clover

 

[jasterlg1]

Enable RadeonDeinit in clover

did not help

 

[Gigamaxx]

did not help

Whatevergreenkext and lilukext.
Use hdmi or DisplayPort.

 

[tisyaboijb]

Hello I am working off a r7 360 sapphire variant. The listed device IDs weren't working for me and resulting in black screen. Just found this in Aida, going to try on Mojave and see if any success.

 

[Gigamaxx]

Hello I am working off a r7 360 sapphire variant. The listed device IDs weren't working for me and resulting in black screen. Just found this in Aida, going to try on Mojave and see if any success.

You might try ATI Fake ID in Clover one of these in the blue highlight. AMD8000controllerkext.

 

[todadqa]

Hello! Im very new to this all but basically I have a non reference Sapphire Dual-X R9 285.

I have 3 monitors plugged in (out of the 4 ports). 2 are dvi and the other hdmi.

Hdmi pretty much always works (however if computer sleeps or tv turns off, if i turn it back on, it goes undetected and same goes for if i unplug it) BUT only one of the dvi ports ever works out of the 2. They both show up in all stages of the boot up process right up until login.

Someone suggested the ports may be linked but i have had them work together on a random bootup at some point (where i hadn't even changed any settings) but tbf they only thing I physically did there was switch the cables round accidentally after de dusting the gpu (taking it out which I doubt would affect anything but it clearly did)...

Do you have any idea what I can do to get this setup to work? I have ordered a displayport to dvi adapter to try.

 

[Gigamaxx]

Hello! Im very new to this all but basically I have a non reference Sapphire Dual-X R9 285.

I have 3 monitors plugged in (out of the 4 ports). 2 are dvi and the other hdmi.

Hdmi pretty much always works (however if computer sleeps or tv turns off, if i turn it back on, it goes undetected and same goes for if i unplug it) BUT only one of the dvi ports ever works out of the 2. They both show up in all stages of the boot up process right up until login.

Someone suggested the ports may be linked but i have had them work together on a random bootup at some point (where i hadn't even changed any settings) but tbf they only thing I physically did there was switch the cables round accidentally after de dusting the gpu (taking it out which I doubt would affect anything but it clearly did)...

Do you have any idea what I can do to get this setup
work? I have ordered a displayport to dvi adapter to try.

Check this thread for editing the Framebuffer.
#1

 

[jaymonkey]

I have 3 monitors plugged in (out of the 4 ports). 2 are dvi and the other hdmi.

Hdmi pretty much always works (however if computer sleeps or tv turns off, if i turn it back on, it goes undetected and same goes for if i unplug it) BUT only one of the dvi ports ever works out of the 2. They both show up in all stages of the boot up process right up until login.

@todadqa,

Check that you have the correct framebuffer assigned for your AMD card, according to the guide it should be "Lagotto" for AMD R9 285.

AMD9000Controller.kext (3rd Gen GCN architecture)

Graphics Card	OOB	min. OSX	DevID	Reference Port Layout	Framebuffer	Known Issues
R9 285 / R9 380	Yes	10.10	0x6939	DP, HDMI, 2x DVI	Lagotto	Needs RadeonDeInit (since 10.11)

You can look in the ioreg to check the current frame buffer, for most AMD GPU's it's under GFX0 -> Device_Type.

If your DVI Monitors are 1080P or higher then you must make sure the DVI ports are running in dual-link mode.

Installing Lilu + WhatEverGreen should be enough to ensure the correct AMD framebuffer is used and that the "RadeonDeInit" flag is set, it should also enable DVI dual-link.

If you dont already have Lilu + WhatEverGreen installed then you should try that first.

Alternatively you can use Clover (in which case do not use WhatEverGreen) to manually set all three parameters :-



I dont have a AMD R9 285 GPU to test with but if you follow the recommended settings from post #1 it should work.

Cheers
Jay

 

[dasboot5]

Do you foresee support for RX 5700 XT????

 

[izo1]

Do you foresee support for RX 5700 XT????

Most likely yes since they are Polaris (example: RX570, RX580) replacements.