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joeknock90 / Single-GPU-Passthrough

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No signal to host after guest shutsdown #92

Closed kelvtech-co-uk closed 2 years ago

kelvtech-co-uk commented 2 years ago

AMD CPU nvidia GPU

Win11 guest boots without issue, claims the GPU and works fine. Shutdown the guest but the host video signal doesn't resume.

Host looks to reclaim GPU and efi framebuffer fine once the guest exits.

I have noticed though I get a kernel fault and taint if I try to rebind vtcon1 but not vtcon0.

I'd appreicate any pointers to investigate as all my searches have come up empty.

Thanks.

kelvtech-co-uk commented 2 years ago

Resolved my issue.

GPU is an RTX 3090 with 24GB vRAM, my problem was I had "Above 4G Decoding" enabled in the UEFI. As soon as I disabled this then mu problem went away.