Sapphire RX580 not properly utilized in Mojave

[stiligFox]

Hello all - I just got in and installed my Sapphire 580 RX Pulse 8GB, and installed it right away. Just using macOS Mojave I get about 5-30 fps in the general UI with nothing else running.

Sapphire 580 RX Pulse 8GB
Intel i7 4790k
32GB DDR3 RAM
Samsung 850 EVO 500GB SSD
ASUS Maximus Gene VII Z97
macOS Mojave 10.14
SMBIOS iMac 14.2

When running Fortnite I get 1-4fps, and iStat Menus shows maybe 5% pressure on the GPU, and about 50% usage on all 4 cores of the CPU. I ran Cinemark r15 and got 98fps (and the GPU went to 100%) so I know the GPU works and is being utilized. I didn't use whatevergreen or lilu kexts as I've heard they aren't needed. I also had this same issue with my GTX 980 TI.

In the BIOS I set PCI-e graphics as default and turned of iGPU multi-monitor support; I don't see a function to completely disable the iGPU like I could in my old motherboard.

Any advice? Any other tests I should run to make sure the new 580 RX is being properly used by the system?

Thanks all!


EDIT: I installed Lilu and Whatevergreen, never helped. I also tried running Stage9, a Unity based Star Trek simulator, and same thing - no more that 4-5FPS. What the heck could be wrong? It’s as though the CPU is trying to handle all the work by itself. Could I have some extraneous kext that’s wrecking havoc? (I have intelgraphicsfixup installed, is that still needed?)

EDIT 2: also installed and tried running Everspace, got max 7 FPS. I honestly don’t think anything is really using the GPU. I’m using a DisplayPort cable and am only running 1080p. I’ve tried setting all the game stuff on lowest settings and even windowed 800x600, I still get max 7 FPS. I also noticed that the temps and fan speeds of the new GPU don’t show up in iStat with all my other sensors, which is odd.

Would someone be willing to check out my EFI folder and see if somethings amiss with my configuration?

 

[stiligFox]

Here's my EFI folder if it might help anyone.

 

[pastrychef]

EFI is not attached...

 

[stiligFox]

EFI is not attached...

Updated post with attachment, should show up now

 

[Gigamaxx]

Here's my EFI folder if it might help anyone.

Is your monitor cable attached to the RX card or the motherboard?

 

[pastrychef]

Updated post with attachment, should show up now

Please take a screen shot of what you have installed in /Library/Extensions/.

 

[stiligFox]

Is your monitor cable attached to the RX card or the motherboard?

It’s connected to the RX card. The 580 is also in the main PCIe x16 slot.

 

[stiligFox]

Please take a screen shot of what you have installed in /Library/Extensions/.

Here you go. Thanks for looking into it!

 

[Gigamaxx]

Here you go. Thanks for looking into it!

You have Cuda drivers ion there. Remove them.

I also looked at the EFI folder, your clover may be corrupted as the folders are out of alphabetical order see pic. Try running clover install again to correct this.

Also your Kexts 10.14 folder has a lot of sensor kexts try removing those temporarily to test without them. There are 2 ethernet kexts which one do you need? All these kexts should go into Other folder and delete the 10.6-10.14 folders.

 

[pastrychef]

Here you go. Thanks for looking into it!

In addition to what Gigamaxx said, I also suggest moving all the kexts from /EFI/CLOVER/kexts/10.14/ to /EFI/CLOVER/kexts/Other/. Also, AppleALC.kext will probably help you get audio working.

In config.plist > Graphics , uncheck the Inject Intel and use the Intel FB Patcher utility to configure your config.plist instead.

I think that once the Intel FB Patcher has properly injected ig-platform-id, things will work correctly.