seems like some people already mentioned this, but i wanna share my problem of this new macinabox gpu passthrough.
i can boot without any problem with qxl. but if i tried to passthrough my gpu, it stops at apple logo screen with 0% of progress.
i tested it on sonoma(but it was sequoia actually), ventura(after latest sequoia fix)
unraid version is beta 4. my gpu is RX580.
its not a problem vbios, rx580 can show display output regardless using vbios or not at the boot driver selection