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GPU passtrhough, subsystem lost

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When I do lspci on my **manjaro linux host** I can see that my Nvidia GPU is a part of [1025:1409] subsystem (as is everything else on my machine). The GPU is in its own IOMMU group and has vfio-pci driver. When I pass through my GPU into **windows 11 guest** in qemu the device instance path in windows device manager is PCI\VEN_10DE&DEV_1D52&SUBSYS_00000000&REV_A1\4&12829B10&0&0014. So subsystem is lost. Because of that I have problems with the drivers. First the driver installer couldn't find compatible hardware. Then I replaced all occurences of 1025:1409 sybsystem related to my device (1D52) to 0000:0000 subsystem in nvacig.inf (found no occurences in other *.inf files). Now driver installation starts but fails after some time. How do I fix it? It feels like if the subsystem was right then it would work.
Asked by grabantot (101 rep)
Apr 23, 2023, 02:53 PM
Last activity: Apr 23, 2023, 03:27 PM