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MindBender1972

macrumors newbie
Original poster
Oct 8, 2012
4
0
Hi,

Back in 2012 I cross-flashed my then new-to-me Mac Pro 4,1 to 5,1 and maxed it out in the time that followed, but the machine was starting to show its age.

So I just got myself a new-to-me Mac 7,1, migrated the MacOS data using the Migraine tool, and transplanted the Windows installation rather successfully, but I'm running into a lot of minor problems. Problems I didn't have with my (even) older Mac Pro. Unfortunately, the NetKas forum, where I was rather active back then, no longer seems to exist. I'm hoping the knowledgeable people there found their way over here too.

The standard configuration of my Mac Pro 7,1 is: 28-core CPU, 96GiB RAM, 1TiB SSD, Radeon Pro 580X GPU. Much to my surprise it came with 4 months of AppleCare for Enterprise too and the SSD one had a few hours or run-time on it.

What I have added myself is:
  1. An OWC Accelsior 4M2 card with two WD Black SSD.
  2. A Sonnet Allegro Pro USB 3.1 card with 4 USB-C ports (because I had it).
  3. An AMD Radeon RX 6950 XT GPU, running an RX 6900 XT vBIOS
  4. A Promise Pegasus J2i cage holding the Mac Pro 5,1 Intel SSD (just in case I still need something from it that's not migrated).
The WD SSDs are dedicated to Windows 10 and Linux (Mint). MacOS is confined to the internal Apple SSD. All three boot fine from the boot menu. Even the old Intel SSD boots, but that's not really a use-case.

However, Windows 10 does not recognise many of my peripherals, even after installing the BootCamp tools. With a few exceptions, like the performance counter registers, I've got almost everything supported, but the only the Radeon Pro 580X GPU shows up in the AMD tool, not the RX 6900 XT (or the RX 6950 XT prior to cross-flashing).

Linux takes a long time to boot, and when it finally does, the Kernel log shows an SMC error and it is littered with ACPI errors. Also, and this worries me the most, it was full of recoverable PCIe errors. Those drastically decreased after moving the Accelsior to another slot, but they're not completely gone.

Does anybody have any tips for me?

Thank you very much in advance.
 

I don't know if this can help you but the pci-e slots utility helps a lot: some ports (the bottom ones 1,and,3 if I remember well) are directly connected to the cpu while the others are managed by the chipset. You have to be careful when adding non-MPX GPUs to balance columns A and B

Bootcamp drivers are not up to date and about linux I don't know but I imagine you have to install them one by one
 
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