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

Joined
Jun 13, 2019
Messages
196
Motherboard
Gigabyte Designare Z390
CPU
i9-9900K
Graphics
RX 580
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  1. iMac
Mobile Phone
  1. iOS
I have to say, I'm blown away. I bit the bullet this weekend and purchased this board hoping to gain some better support/stability from my system and everything came together fairly easily.

I've always had partial/flakey Thunderbolt on my old build, but with this new board and your help with the mini Catalina build, everything is basically - just working. For the first time ever, I actually do have literal Thunderbolt hotplug, and even sleep/wake, no weird USB issues, and overall the system seems nice! I am still in quite in shock over it!

I have encountered a few random hard locks/freezes, and I've made a few small tweaks to see if they help or not (removed the bootflag ID from Clover, swapped my HDMI + DP cables on my dual monitor setup to a DP + DP setup, and disabled CSM in BIOS). I initially tried just doing the 32 -> 16 Clover bootflag change I read about, but it didn't help, and my system refused to use my primary monitor when I tried removing WhateverGreen. Still too early to tell if these changes I did have brought back some stability and fixed the hard locks, but *fingers crossed*.

If everything pans out stability wise, I hope to upgrade to an i9 here within the next month or two. Do you expect any changes will be required, or should it be just a literal drop in replacement for an i7 8700K?

I did jump right to the latest F9b bios. I see that in the mini Catalina, it did say F8. Should I revert to F8?

Thanks again for doing this build and putting everything up here Casey! This is amazing. By far the most complete and quirky-less Hackintosh I've ever built/used.

I use an i9-9900K and no problems with this build. If anything it probably is less likely to have issues as the iMac19,1 uses an i9-9900K.

I don't know about the 9900KS variant though.
 
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I use an i9-9900K and no problems with this build. If anything it probably is less likely to have issues as the iMac19,1 uses an i9-9900K.

I don't know about the 9900KS variant though.
Thank you CaseySJ for this additional build guide.
codyqx4, did you pick the K version due to limited supply of the KS models?
 

CaseySJ

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I have to say, I'm blown away. I bit the bullet this weekend and purchased this board hoping to gain some better support/stability from my system and everything came together fairly easily.
Glad to hear it!
...
I have encountered a few random hard locks/freezes, and I've made a few small tweaks to see if they help or not (removed the bootflag ID from Clover, swapped my HDMI + DP cables on my dual monitor setup to a DP + DP setup, and disabled CSM in BIOS). I initially tried just doing the 32 -> 16 Clover bootflag change I read about, but it didn't help, and my system refused to use my primary monitor when I tried removing WhateverGreen. Still too early to tell if these changes I did have brought back some stability and fixed the hard locks, but *fingers crossed*.
Nice to see the experimentation with different options. Please let us know if the system stabilizes or continues to be unstable. What make/model of RX 5700 XT are you using?
If everything pans out stability wise, I hope to upgrade to an i9 here within the next month or two. Do you expect any changes will be required, or should it be just a literal drop in replacement for an i7 8700K?
No changes at all would be necessary when swapping out the i7-8700K for an i9-9900K. By the way, the Catalina Mini-Guide puts the iGPU into headless mode using Platform ID 0x3E980003. But for i7-8700K, it would be better to change this to 0x3E920003. Not sure if this affects the stability issues you're seeing (probably not).
I did jump right to the latest F9b bios. I see that in the mini Catalina, it did say F8. Should I revert to F8?
No need to revert. Firmware F9b is perfectly fine.
 

CaseySJ

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Messages
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Motherboard
Gigabyte Z490 Vision D
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  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
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  1. iOS
If you've patched Thunderbolt firmware in the past, then your experience here can be very helpful. I used the CH341A on a used Designare Z390. When the 8-pin clip was attached to the Winbond chip, LEDs on the motherboard turned on as expected, but the chip itself was undetected and unreadable. I'm therefore reluctant to try it on my main system, but will do so with the new programmer that should arrive in about a week.
Just received tracking info for the new SPI chip reader/programmer. It is expected in 2 days (coming from Europe). Will try reading the Winbond chip at that time.
 
Joined
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What make/model of RX 5700 XT are you using?
I ended up going with this one: "Sapphire Technology 11293-03-40G Radeon Nitro+ Rx 5700 Xt"



the Catalina Mini-Guide puts the iGPU into headless mode using Platform ID 0x3E980003. But for i7-8700K, it would be better to change this to 0x3E920003
I'm not sure where to change this? I looked in CloverConfig -> Devices, and I see the ig-platform-id under Properties, but it says "0300983E". I don't see any mention of a Platform ID anywhere in the AMD GPU config that I'm using from the mini-catalina guild. Am I missing something?



Thanks for clearing up my concerns about upgrading the i9 and also with the bios! :)
 

CaseySJ

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...
I'm not sure where to change this? I looked in CloverConfig -> Devices, and I see the ig-platform-id under Properties, but it says "0300983E". I don't see any mention of a Platform ID anywhere in the AMD GPU config that I'm using from the mini-catalina guild. Am I missing something?
...
You found the right place. The Platform ID is entered in reverse byte order so 0300983E is actually 3E980003 backwards.

So simply change that value to 0300923E.
 
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Joined
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Messages
196
Motherboard
Gigabyte Designare Z390
CPU
i9-9900K
Graphics
RX 580
Mac
  1. iMac
Mobile Phone
  1. iOS
Thank you CaseySJ for this additional build guide.
codyqx4, did you pick the K version due to limited supply of the KS models?

The KS didn't exist when I got the K, and I got the K because it was both the best CPU this board could take, as well as a CPU actually used in real macs.
 
Joined
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Messages
143
Motherboard
Gigabyte Designare Z390
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i9-9900K
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Radeon VII
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  1. MacBook Pro
  2. Mac Pro
Mobile Phone
  1. iOS
You found the right place. The Platform ID is entered in reverse byte order so 0300983E is actually 3E980003 backwards.

So simply change that value to 0300923E.

Excellent! Thank you! I will do this, and maybe it will help with the Stability a bit. I'll report back when I have updates regarding it! :)

I will change it back to "0300983E" when I upgrade to the i9.
 
Joined
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Messages
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Gigabyte Z390 Designare
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@CaseySJ
Hi guys! Yesterday I tried a new fresh installation with this giude. Everything went well and Apple TV+ is working w/o issues. BUT today I had three freezes already. I tried shikigva=16 and removed shiki id and agdpmod=pikera. The problem still remains, and, when I go afk for a few minutes and come back, the system isn't responding at all. When I was with Mojave, I didn't have any issue at all with CaseySJ's guide. Also, when I upgraded to Catalina, I didn't have any freezes. With the fresh installation guide my system is freezing very often. Any suggestions.
 

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CaseySJ

Moderator
Joined
Nov 11, 2018
Messages
13,886
Motherboard
Gigabyte Z490 Vision D
CPU
i5-10400
Graphics
RX 580
Mac
  1. MacBook Air
  2. MacBook Pro
  3. Mac Pro
Classic Mac
  1. Quadra
Mobile Phone
  1. iOS
Hi guys, yeasterday I tried a new fresh installation with this giude. Everything went well and Apple TV+ is working w/o issues. BUT today I had three freezes already. I tried shikigva=16 and removed shiki id and agdpmod=pikera. The proble is still remains and when i go afk for a few minutes and come back, the system isn't responding at all. When I was with Mojave I didn't have any issue at all with CaseySJ's guide. Also when I upgraded to Catalina I didn't have any freezes also. With the fresh installation guide my system is freezing very often. Any suggestions.
This initially seemed like a few isolated incidents, but maybe there's more to it. I'll do a fresh install in about a day or two and see if I can reproduce the problem.

Meanwhile, the usual things to try:
  • Add "Boot Argument" -wegoff to temporarily disable WhateverGreen. This will affect your HDMI/DP ports, so physically move the video cable to different ports until you find a port that works.
  • Update to WhateverGreen 1.3.6 (and remove -wegoff flag).
  • Look at this guide for DRM content and shikigva settings.
  • One may also try OpenCore by installing the OpenCore EFI onto a USB flash disk (as a temporarily/test solution).
 
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