[SUCCESS] Gigabyte Designare Z390 (Thunderbolt 3) + i7-9700K + AMD RX 580

[CaseySJ]

@FormerUser-50757,

Some suggestions (which you may or may not have tried already):

• Connect only Bluetooth to the internal F_USB header.
• Install the RX 580 for now.
• Reinstall macOS on a spare SSD -- you may follow the new 10.15.4 Mini-Guide.
• Boot directly from the spare SSD (press F12 at BIOS splash screen and select the spare SSD).
• Test system for stability.

 

[FormerUser-50757]

@FormerUser-50757,

Some suggestions (which you may or may not have tried already):

• Connect only Bluetooth to the internal F_USB header.
• Install the RX 580 for now.
• Reinstall macOS on a spare SSD -- you may follow the new 10.15.4 Mini-Guide.
• Boot directly from the spare SSD (press F12 at BIOS splash screen and select the spare SSD).
• Test system for stability.

Tried an RX 580 already. Same issues.
Tried a different SSD and nVME - same issues.
Haven’t tried removing the wifi off the card. Will try that. Might just remove the card entirely and test.

 

[CaseySJ]

Tried an RX 580 already. Same issues.
Tried a different SSD and nVME - same issues.
Haven’t tried removing the wifi off the card. Will try that. Might just remove the card entirely and test.

Which DRAM are you using? Have the modules been "memtest"ed?

 

[doof]

Which DRAM are you using? Have the modules been "memtest"ed?

No errors / logs suggests a hardware problem. If you are using an XMP profile for the ram try disabling that and see if your stability is better. I had a similar issue and tweaking the ram settings cleared it up.

 

[EliM]

Somehow I missed your reply... Distractions, you know.

• Is your IGPU enabled in BIOS?
• Are you using Platform ID 0x3E980003? (Clover Configurator --> Devices --> Properties)
• Are you using iMac19,1 or iMacPro1,1?
• What shikivga do you have in Clover Configurator --> Boot Arguments?

Hi @CaseySJ. No worries at all. I'm amazed you are able to keep up with the sheer number of queries and activity on this thread! We really appreciate your help!

In bios, internal graphics is set to Auto
iMac 19,1
boot argument: shikivga=32
I couldn't find Platform ID in Clover Configurator - Devices - Properties. Possibly it's there but I don't recognize it. I've attached a screen shot. Is Platform ID listed anywhere else?

 

[CaseySJ]

Hi @CaseySJ. No worries at all. I'm amazed you are able to keep up with the sheer number of queries and activity on this thread! We really appreciate your help!

In bios, internal graphics is set to Auto
iMac 19,1
boot argument: shikivga=32
I couldn't find Platform ID in Clover Configurator - Devices - Properties. Possibly it's there but I don't recognize it. I've attached a screen shot. Is Platform ID listed anywhere else?

Please try these changes:

• BIOS --> Internal Graphics --> enabled.
  • If this is set to "auto" it will turn off IGPU when discrete GPU is detected and driving a display monitor.
• In Devices -> Properties, click the bottom (3rd) entry in the Devices list box. Then look at the Properties list box to its right. You should see ig-platform-id
• In Boot --> Arguments, change shikigva to 16 or 80. If you watch Netflix, change it to 80.
• Then run VideoProc and check if HEVC and H.264 hardware acceleration is enabled.

 

[z4k]

Some suggestions:

• Are you sure nothing changed? No new devices connected? No new software or OS updates installed?
• Are video cables connected securely?
• Have you tried booting from a backup disk to see whether the problem exists there as well?
• Because this is a graphics issue, try the latest WhateverGreen and Lilu.
• Also consider updating OpenCore to 0.5.6 or compile your own pre-release version of 0.5.7.

Nothing new on the system for sure. Just working on projects. Absolutely no OS updates will happen on the foreseeable future. Video cables also secure.

This also happened every time the pc woke from sleep into the login screen.

After some troubleshooting I managed to fix this by changing the Mojave wallpaper into static and not dynamic. Some bug probably. Currently switched back to dynamic and all seems to be working fine again after the initial hiccup.

I'm planning to update to 0.5.7 once its released, just a little worried about all the changes in config.plist with each update. I've seen a bunch of stuff get removed/renamed etc and I worry that if I do it manually I might end up breaking something so I'll probably grab the config.plist from the 0.5.7 release and reapply my settings there.

Once again, thank you for your assistance @CaseySJ

 

[EliM]

Please try these changes:

• BIOS --> Internal Graphics --> enabled.
  • If this is set to "auto" it will turn off IGPU when discrete GPU is detected and driving a display monitor.
• In Devices -> Properties, click the bottom (3rd) entry in the Devices list box. Then look at the Properties list box to its right. You should see ig-platform-id
• In Boot --> Arguments, change shikigva to 16 or 80. If you watch Netflix, change it to 80.
• Then run VideoProc and check if HEVC and H.264 hardware acceleration is enabled.

OK, changed the internal graphics to enabled.
In Devices - properties ig-platform id was set as 0300983E. I changed it to 0x3E980003 - value type: data, but upon reboot that had changed to 003E9800 03. Is this a hex code thing?
I set boot arguments to shikigva80. This now allows me to view Netflix in Safari which is a huge plus!! I was forced to use Chrome for Netflix previously.
Unfortunately videoproc still reports hevc hardware acceleration unavailable.

 

[CaseySJ]

OK, changed the internal graphics to enabled.
In Devices - properties ig-platform id was set as 0300983E. I changed it to 0x3E980003 - value type: data, but upon reboot that had changed to 003E9800 03. Is this a hex code thing?
I set boot arguments to shikigva80. This now allows me to view Netflix in Safari which is a huge plus!! I was forced to use Chrome for Netflix previously.
Unfortunately videoproc still reports hevc hardware acceleration unavailable.

Oh no, I didn't say to change ig-platform-id, but only to check whether it exists. Platform ID is specified in reverse byte order so the original value was the correct value: 0300983E. Please change it back to this, reboot, and check again!

 

[EliM]

Oh no, I didn't say to change ig-platform-id, but only to check whether it exists. Platform ID is specified in reverse byte order so the original value was the correct value: 0300983E. Please change it back to this, reboot, and check again!

Yes!!! Switched it back and ran videoproc and it now says hevc hardware acceleration is enabled! You rock!!! Thanks again @CaseySJ! I don't know what I'd do without you!