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19 hours agoSame here. Finally got it working by setting the VM’s chipset to ‘PCIE 1:0’ and enabling ‘Assign special device’ for the NVIDIA card in the settings.

Same here. Finally got it working by setting the VM’s chipset to ‘PCIE 1:0’ and enabling ‘Assign special device’ for the NVIDIA card in the settings.
I had a similar struggle. Make sure you’re using the correct Intel or AMD IOMMU driver for your Proxmox version, and that it’s enabled in the BIOS/UEFI settings. Also, disable Secure Boot if you’re running into issues.