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Does anyone else have USB issues on this board? I can't seem to get all ports working with both USB 2 and USB 3 devices. Without the uia_exclude=... boot argument, several ports will only work with USB 2 devices (USB 3 devices won't even be registered); with it, the other way round: several...

Hi Kyasu1, Did you ever figure this out? I just upgraded to a Vega 56 Nano, and have the same problem. I've tried any combination of SMBIOS, RadeonDeinit, Whatevergreen, etc. to no avail. Does anyone have any idea what else to try? Thank you!

I believe you need to turn OFF both ATI Injection (under Graphics) and Fake ID (under Devices). Also, did you edit any of the relevant kexts in your /S/L/E folder? If so, it might be worthwhile trying to return all of them to their original state. I had the same issue before I changed those...

If the helper card approach isn't working for you, there's also a VBIOS mod you could try. Only advisable if you've got a dual-bios card though, and somewhat cumbersome with dual booting. http://www.insanelymac.com/forum/index.php?app=forums&module=forums&section=findpost&pid=2334128...

Can't reproduce this on my X99 system - with or without CSM enabled, and with the monitor turned off but connected by HDMI, or unplugged from the GPU altogether or plugged into the GPU but not into the mains, still getting a black screen. There was nothing else you did at all? Did you edit the...

It's in /System/Library/Extensions.

Oh, no, thank you for looking into it! I'm the one with the itx x99 board and thus no usable system until this is resolved. ;)

Ah, I had tried different CSM options, but hadn't thought of removing CsmVideoDxe. Just tried it again without that driver. Now, if I only disconnect the GPU, it will still reconnect it when leaving the UEFI shell. If I disconnect, and then also unload the driver, the display will stay frozen...

I have tried this as well with my RX480, and had the same behaviour - I was able to disconnect the driver and the display would freeze, but once I exited the UEFI shell the driver was reconnected and display output restored. I'd be happy to try again though. Did you do anything differently with...

Are you sure you're looking in the correct folder? It's /System/Library/Extensions, not /Library/Extensions.

Huh, that I haven't run into before. A few ideas to try: 1) Create a GPT usb drive with clover installed for UEFI booting only. Maybe it has something to do with legacy clover vs GPT ssd? 2) Check that you have all the usual clover drivers installed, especially the HFS+ one. 3) Go into UEFI...

What is not appearing where? The Sierra installation in Clover? Or Clover in the UEFI boot menu?

That should be easily fixable. Have you installed clover to the hard drive? Do your uefi boot options list clover? If not you can add it from clover itself (booted from a usb drive) using the clover boot options (or so) menu. There should be one such menu corresponding to the hard drive...

Did you format the windows partition as FAT or exFAT in macOS disk utility? You have to keep both of them as HFS+ in disk utility, otherwise it will create some sort of non-standard MBR/GPT hybrid disk, from what I have read. Erase the disk in disk utility, repartition and keep both as HFS+...

In case anyone is still struggling with this: If you've got Windows installed you can use EasyUEFI to add a boot entry for Clover. Click manage EFI Boot Options, then Create a new entry, select the EFI partition, then EFI\CLOVER\CLOVERX64.efi If not, you could try adding them manually in the...

Brilliant, thank you so much. I'm travelling at the moment and only manage to give this a very brief try before I left, but it looks like this does indeed get rid of the "Sleep prevented by H000" error message. (I seemed to run into some other trouble with sleep then, but that may not be related...

I've used the nvme.kext from the beginning, installed straight onto the 950 Pro. I suppose I could try cloning the partition to a cheap SATA SSD to verify it makes a difference, but I'm 99% sure it is indeed the nvme driver. Haven't done much DSDT editing, although I did at one point rename all...

Ah, okay. I wasn't asking for advice regarding my build in general, so the rest of the components didn't seem relevant. I've added it now though, sorry about that.

Oh, I've been thinking of doing the same, but haven't gotten anywhere, in part because I have no working DSDT to compare mine to. Would you be willing to share (even by pm) what you've got so far? Maybe I can help. The sleep issue might be related to X99 I think, I'm getting the exact same...

I have a similar issue on an Asrock x99 board, although for me it also happens when trying to boot into the USB installer. For me ultimately the only way around it was to temporarily use a graphics card that's supported natively, install OS X and then the nvidia drivers, then switch back to my...