Hi, everyone.
I have used search bar profusely and do not see anyone mention this so I intend to start this thread and clear few possible causes for new MAC os.
Previously, I had a good run with Catalina and it had no problem with GPU passthrough while I installed X299 with Rx560 graphic card.
But after I tries to upragde my OS to Monterey, no matter what SMBIOS I uses, it alwasy shows black screen after the OS selection pannel and before the Apple Logos shows up. I tried to upradde kext ,used boot-arg, selected vbios but to no avail. Since my system could boot normally if the OS is Catalina, I believe the probelms lies in the new OS. The similar situation that was mentioned by everyone else does not eactly fouces on issue with the OS system but hardware probelms or older version MacOS that is proved to be working if every setting is correct.
So I am curious if there is anyone that could use Monterey and passed through similar gpu to the OS