pastrychef's Asus ROG Strix Z370-G Gaming (WI-FI AC) build w/ i9-9900K + AMD 6600 XT

[pastrychef]

Hi, I tried the "-igfxnohdmi” boot flag and iMac18,1 and nothing changed. Not sure what else to do... I downloaded the r4.4 EFI, edit the config only to change the SMBIOS and added the boot flag and rebooted several times.

Please try changing the following:

 

[pastrychef]

Oh, you're right. I was looking at the latest activity, where it said that r4669 was committed 8 hours ago. I thought that meant that it was available for download. Anything I can do in the meantime? Maybe someway to downgrade the beta or something without deleting my files?

I just installed Mojave public beta 10 and had no problems with Clover seeing the drives.

 

[hannibal1969]

I have an update on my Vega 64 upgrade. I purchased a used reference Sapphire Vega 64 (non nitro) from ebay for ~$410 and did some tests with it.
The fan speed issues were present at first, but the kext seemed to work pretty well as a fix. Sadly the fan speed does not scale with the increased heat, it only kicks in after it hits a certain degree threshold.

I've noticed it too. I reflashed my card with the MSI RX Vega 64 bios. It gives me native resolution at boot in clover (CSM disabled). It behaves exactly as you tell with the exception in my case that when I use VGTab kext it turns down the fans and indeed they will not be adjusted in a sufficient way. When I play a complex 3D game like Company of Heroes in 4K it plays wonderfull but after a while it kicks in 100% load of fans and disconnects the cards from the PCI bus. The Hack is still alive because I cans still hear the sound of the game but the GPU is overloaded / overheated so I have to reset the whole system.

Running on MSI bios without VGTab kext runs game stable but GPU runs at 65 degrees 2500 rpm (quite loud). Quitting the game needs a Quicktime movie to turn the fans down.

We definitely need a good VEGA tweaktool to control it on-demand directly from macOS. There is a way to instruct the behaviour of the GPU because the kext VGTab does. So we need a way to find out to re-adjust it so you can choose "Game" mode (extra cooling) or switch to "Silent" mode when you want the GPU as silent as possible. Is this possible and who is smart enough to make it?

 

[pastrychef]

I've noticed it too. I reflashed my card with the MSI RX Vega 64 bios. It gives me native resolution at boot in clover (CSM disabled). It behaves exactly as you tell with the exception in my case that when I use VGTab kext it turns down the fans and indeed they will not be adjusted in a sufficient way. When I play a complex 3D game like Company of Heroes in 4K it plays wonderfull but after a while it kicks in 100% load of fans and disconnects the cards from the PCI bus. The Hack is still alive because I cans still hear the sound of the game but the GPU is overloaded / overheated so I have to reset the whole system.

Running on MSI bios without VGTab kext runs game stable but GPU runs at 65 degrees 2500 rpm (quite loud). Quitting the game needs a Quicktime movie to turn the fans down.

We definitely need a good VEGA tweaktool to control it on-demand directly from macOS. There is a way to instruct the behaviour of the GPU because the kext VGTab does. So we need a way to find out to re-adjust it so you can choose "Game" mode (extra cooling) or switch to "Silent" mode when you want the GPU as silent as possible. Is this possible and who is smart enough to make it?

In VGTab, try to set target temperature lower. I use tried 50 and 55 and it worked well. I think Vega 64 runs hotter so you may have to try around 55.

 

[o.calderon1492]

Please try changing the following:
View attachment 350569

I tried both... my display flickers only once during boot, right before the login screen appears. I seem to lose options in “Displays” System Prefernces and System Information doesn’t report @60Hz anymore. Just defaults to 3840x2160. Should I just update to Mojave?

 

[scottkendall]

When I play a complex 3D game like Company of Heroes in 4K it plays wonderfull but after a while it kicks in 100% load of fans and disconnects the cards from the PCI bus. The Hack is still alive because I cans still hear the sound of the game but the GPU is overloaded / overheated so I have to reset the whole system.

I would notice something similar when I used a windows VM or left the VM running while I was playing a game. I grabbed a XFX Radeon RX Vega 64 Currently I am trying to force it to crash buy doing everything that would normally cause it to crash like what you are describing above but it has yet to crash for 3/hrs or so.

Later I might install whatevergreen that always cased me crashes previously.

 

[pastrychef]

I tried both... my display flickers only once during boot, right before the login screen appears. I seem to lose options in “Displays” System Prefernces and System Information doesn’t report @60Hz anymore. Just defaults to 3840x2160. Should I just update to Mojave?

So did it fix your flickering?

I would wait for the Mojave final since it's less than 2 weeks away.

 

[o.calderon1492]

So did it fix your flickering?

I would wait for the Mojave final since it's less than 2 weeks away.

Well at least my desktop is not flickering. If I open the browser or launchpad the display either flickers or seems to do a loading effect, line by line. If I move a Finder window, it creates little artifacts on the display. It’s a lot better but not great.

 

[pastrychef]

Well at least my desktop is not flickering. If I open the browser or launchpad the display either flickers or seems to do a loading effect, line by line. If I move a Finder window, it creates little artifacts on the display. It’s a lot better but not great.

You can revert to spoofing Kaby Lake graphics. Change these two:

 

[pastrychef]

I finally got my hands on a true USB 3.1 gen 2 device to test the USB 3.1 gen 2 ports.