pastrychef
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I applied the 3 patches contained in Multibeast 11.2 as you suggested, but the instability seems even more pronounced, with those patches included in the config.plist file for my Skylake build. For longer than a year now I have been blessed with a stable Skylake build, that was just extraordinary, and all of a sudden this happens which I believe relates to the 10.14.4 upgrade
I attached a "Supporting files.zip" folder containing the following files:
GA-Z170X-UD3-USB.kext being a single kext method to ensure that the USB ports I need are appropriately configured. No other kexts were required to support this method, which entailed modifying it's info.plist wherein one needed to define the USB ports and types one required.
The result of using this single kext method only, without any SSDT-03.aml, is depicted in a screenshot of the "iOreg output", also attached
When I started experiencing instability problems, from about 10.14.1, I switched from my GA-Z170X-UD3-USB.kext method to your kextless method of USB control. The attached file "SSDT-3-xh_rvp10", which I am presently still using, refers. That worked well for quite some time and I was impressed with the idea that your method promised to outlive arbitrary Apple macOS updates. In addition I strongly feel that your method is more elegant than anything else available, considering the state of the art at present.
The result of using your kextless method only, without my single GA-Z170X-UD3-USB.kext method is depicted in a screenshot of the "iOreg output", also attached.
Note that both methods yield the same iOreg result and that my USB requirement is only 12 ports and well within the limit of 15 ports imposed by Apple for a single USB controller.
I know that I should have also attached problem reporting files to assist you and your fellow experts in troubleshooting this issue. I am hoping however that there is a known issue, connected to 10.14,4 that causes this instability and that a quick fix or solution might just be readily be available.
My instability might even have it's origin with Lilu and it's siblings, which from time to time I compile myself to ensure that I am running with the latest commits.
Hoping you can assist or suggest an alternative approach to get back the stability I have become accustomed to over the many months of trouble free operation.
Greetings
If you have already applied the 15 port limit fix outlined in post #1, you don't need any of the KextsToPatches.
The KextsToPatches are only applicable to those who have not addressed the 15 port limit.