Radeon RX 580 Sapphire 8GB Black Screen.

[Mspec]

Have a working high sierra setup which never gives me any problems. Trying to direct install or install to another drive the public beat of Mojave gives me a black screen when it goes to init the graphics.

Not really sure where to start as I would have thought the Radeon was Natively supported as it works fine in High Sierra.

Here is a screen shot of where it blanks out. It appears the install keeps going as there is hard drive activity but no image.

Sorry for the crappy screen shot grabbed this before I went of to work this morning.

What other information could I provide to see if I can get this sorted ??

Anybody have this card working fine in Mojave ??

 

[Stork]

Since we're not telepathic, we need to know your system components. See the tonymacx86 Forum Rules & Policies on signature block components.

Additionally, please provide complete details in your Profile.

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By completing your Profile and signature block, you help us help you better.

 

[Macmagoo]

Pulse RX580 works fine in Mojave.

 

[Mspec]

Sorry guys profile info updated.
System currently set at 17,1

Other hardware.

Dell Ultrasharp U2718Q 27" 4K Monitor (Connected with mdisp)
G.SKILL Ripjaws V Series 32GB (4 x 8GB) DDR4 2400Mhz CL15 1.2v
TP-LINK Archer T9E AC1900 Wireless Dual Band PCI Express Adapter


Where to from here ??

 

[Macmagoo]

I could not get the DP ports working but HDMI is working perfectly. I have made a few changes but I have not re-tested the DP ports. I am on 17,1 as well.

 

[Stork]

Sorry guys profile info updated.
System currently set at 17,1

Where to from here ??

The SysDef 17,1 is probably your problem. I was using 18,3 on MyHero II but lost the 580's DP ports when I updated to 10.13.4. So, one user discovered by switching to 14,2 (using MultiBeast) his black screen was fixed which I successfully did, too. So, since I've not tried Mojave, yet, I can't tell you how to change your SysDef but try 14,2.

 

[Mspec]

The SysDef 17,1 is probably your problem. I was using 18,3 on MyHero II but lost the 580's DP ports when I updated to 10.13.4. So, one user discovered by switching to 14,2 (using MultiBeast) his black screen was fixed which I successfully did, too. So, since I've not tried Mojave, yet, I can't tell you how to change your SysDef but try 14,2.

Ok will give that a go tonight, Interesting your port failed on 18,3 but works on 14,1.

Have clover config which works fine with Mojave so will try changing to 14,1

Will try the hdmi first and see if that works as well.

To be continued tonight ...

 

[Stork]

Ok will give that a go tonight, Interesting your port failed on 18,3 but works on 14,1...

14,2.

 

[Pavo]

17,1 will work fine, you just need to use the correct SSDT injections. Upload your original DSDT and I can make a SSDT for you. Clover boot menu hit F4 to get a copy of original DSDT, it will be located in EFI>Clover>ACPI>origin

 

[Mspec]

17,1 will work fine, you just need to use the correct SSDT injections. Upload your original DSDT and I can make a SSDT for you. Clover boot menu hit F4 to get a copy of original DSDT, it will be located in EFI>Clover>ACPI>origin

To be on the safe side I have uploaded the complete origin folder. Thank you very much for your help.