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No output on monitor with gpu passthrough

I can access my vm via web console and inside the vm „lspci“ shows my rx580. In the hardware options I have ticked all checkboxes (primary gpu, pci Express, all functions.. ), though I don’t get a signal through my monitor, when I set display to none.

I followed this guide:

https://www.reddit.com/r/homelab/comments/b5xpua/the_ultimate_beginners_guide_to_gpu_passthrough/

Any ideas what I should look after ?

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Does your CPU support virtualization (VT-d/IOMMU) and have you enabled it in the bios?

If yes, you could try disabling your display in the hardware tab of proxmox and start your VM and see if you get a signal.

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If you can access your VM through web console, the Primary GPU checkbox is not functioning properly. Set your Display in hardware to “none” and make sure “vga=1” in your config

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I did now, but I only get a black monitor and webconsole says no connection.

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Your vm should have two display, one is QEMU monitor, the other is passthrough gpu. If you replicate the displays in your vm, you should see your vm's display in pve monitor?

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OP, you're solved the problem? I have the same but with iGPU Intel.

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Any updates on this? I got the same issue.

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