- Joined
- Jan 16, 2011
- Messages
- 621
- Motherboard
- Gigabyte Z390 Designare
- CPU
- i7-8700K
- Graphics
- Vega 64
- Mac
- Classic Mac
- Mobile Phone
Glad you got it going! In my hack I had to enable “Enable 4G Decoding” in the BIOS if I was using both my 10GBe Ethernet and Alpine Ridge PCI-E cards. This is because these devices are memory mapped and the OS has problems mapping them into the memory space below 4GB because of memory fragmentation. There is a slide=xxx command that can go into your config.plist but I’ll investigate this further in my thread.Holy cow!! I can't believe you're doing all that from memory, Jim. Anyway, I won't get on an overly tedious step-by-step checking off of all your suggestions, but I'll just say that I followed them. Your assumption on how I want to configure is correct -- RX580 feeding a LG 4K display via DP, and iGPU as headless helper. I've been using iMac18,3 all along and it seems to be the best fit.
Soooo...in following your steps, I originally got the kernel panic in the attached screenshot, consistently and repeatedly.
Then I realized I did indeed forget one of your steps, and that was pulling my Alpine Ridge TB card. I had unplugged my TB drive, but forgot to go back and pull the card. Once I did that, things progressed beyond the original KP!
Then it got into this loop of "Begin Gfx firmware load process" steps as reflected in the second screenshot below. It must've cycled through this 50 or more times. I lost track and actually walked away to get a drink, and when I came back my login screen was up! So I've logged in and am successfully playing around.
Scrolling through 1080p x264 videos in quick view feels snappier, and I have yet to run into the Window Server freezes that have plagued me in that scenario.
So it seems like maybe the Alpine Ridge controller is my main culprit on that kernel panic. In googling that KP message, it seems like it maybe related to the AptioMemoryFix driver versions...
Before I try to muck with reintroducing Alpine Ridge, do I need to replace any of the ACPI patches, etc.?
Jim, you are the man. I'd mucked with this for hours and hours without getting to this point. I should've probably known to pull an extra component like the TB card, but sometimes you just need someone to remind you of the right steps!
EDIT: Now with 100% more screenshots!
You can put your ACPI patches back now, but I’d copy your EFI folder as a backup as a safety measure.
Jim
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