I have successfully installed quite a while ago NVMe mod according to one of the guides from the forum.
I've done it manually while using latest bios version.
No problems with typical usage, however there is one with sleep / hibernation mode.

I am running drives on one PCIe ICY BOX IB-PCI215M2-HSL (PCIe X4) adapter for 1x M.2 NVMe and 1x M.2 SATA SSD drives:
1) NVMe WD SN550 1TB with macOS
2) M.2 SATA Micron 250GB whatever model with Windows 10

Adapter itself is sitting in the second PCI Express x16 slot.
As the board has 3 PCI Express slots they are populated like this:
1) PCI Express x16 Running at x8 (PCIEX16) - Graphic Card (Bandwidth cut in half from PCIEX16 because second PCIE x16 is populated)
2) PCI Express x16 Running at x4 (PCIEX8) - IcyBox Adapter with 2 M.2 Drives (NVMe & SSD)
3) PCI Express x16 Running at x4 (PCIEX4) - Sound Card

So, lets finally get to the problem.

I've noticed that while running configuration like this, macOS isn't able to wake up from the Sleep Mode and actually same goes for Windows from what I seen.
Therefore I guess problem isn't actually related to the NVMe Mod itself, but most likely I assume PCIe ICYBOX Adapter isn't able to wake up from Sleep / Hibernation state.

Any ideas if there is a way to resolve this issue?

Also I am thinking now... I should probably ditch that sound card, move ICYBOX to PCIe x16 slot 3 and leave gpu alone. I will probably do that later on today.

PS. Sorry if the post is in the wrong category but pretty much I didn't know where to place it properly.
Thanks in advance


Edit by Fernando: Thread title customized and shortened

You're assuming that a new device is the issue... you cannot assume that a DXE driver module inserted in a bios just used in the system post is the cause, period.
This is an issue in your hackintosk very common with power management, you need patch/fix fot his, better start reading in dedicated forums like insanelymac or macrummors

So resuming and stating... this has nothing to do with the NVMe mod.

I think you completely misunderstood what I had to say.

I am not claiming that the DXE driver is the issue here, in fact quite the opposite.

But yes I think issue might be related to the Adapter running on PCIE X16 slot / missing bios module / or bios settings - and it doesn't have to be a faulty device, rather I would assume something is preventing it from waking up / or missing.

With your suggestion about power management issues I was pretty much sure that this will be the case. Huh I even done research back then and ran NVMeFix at the time.

And that was until I have found out that the Windows 10 has exactly same issue and will not wake up from sleep / hibernation mode.

Difference here which by the way I mentioned is that the Windows 10 sits on very same adapter but is being served by M.2 SATA interface (connected via SATA cable from MOBO to Adapter) and not via M.2 NVMe. Which means that the Micron 250GB M.2 SATA SSD is not being served by DXE driver module at all.

And that is what makes me exactly think that the issue might not be related to power management of macOS but somehow related to bios settings or other modules for PCIE X16 slots. Might be as well motherboard on its own.

Yes even in Windows OS u get this sometimes... so no surprises here on hackintosh, its all related to hw capabilities/devices and the ability of the mainboard/system power management control over this resources, its not an easy task to debug.
I cant point you any straight answer or issue to pin point it.
Settings on the motherboard or different hw devices brand/model have implication on this and drivers also a big role.