AMD GPU Passthrough Connection Timed Out

Tweety76

New Member
Oct 17, 2025
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I'm brand new to Proxmox and I'm setting up my first VM. I got my first VM running with Fedora, but it was extremely slow because my CPU doesn't have integrated graphics. I've followed a number of tutorials and forum posts but when I pass in my GPU I get "Error: connection timed out" message and the console stays blank. Can anyone help with this issue? Any advice would be appreciated.

CPU: AMD Ryzen 5 2600
Motherboard: Gigabyte B450 Aorus Elite
GPU: Nvidia 1070 ti

VM:
1760670817071.png

Grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet iommu=pt"

Blacklist
blacklist radeon
blacklist nouveau
blacklist nvidia
blacklist nvidiafb

Modules
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

vfio.conf
options vfio-pci ids=10de:1b82, 10de:10f0 disable_vga=1

1760670750110.png
 
I'm brand new to Proxmox and I'm setting up my first VM. I got my first VM running with Fedora, but it was extremely slow because my CPU doesn't have integrated graphics. I've followed a number of tutorials and forum posts but when I pass in my GPU I get "Error: connection timed out" message and the console stays blank. Can anyone help with this issue? Any advice would be appreciated.

CPU: AMD Ryzen 5 2600
Motherboard: Gigabyte B450 Aorus Elite
GPU: Nvidia 1070 ti

VM:
View attachment 91764

Grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet iommu=pt"

Blacklist
blacklist radeon
blacklist nouveau
blacklist nvidia
blacklist nvidiafb

Modules
vfio
vfio_iommu_type1
vfio_pci
vfio_virqfd

vfio.conf
options vfio-pci ids=10de:1b82, 10de:10f0 disable_vga=1

View attachment 91763
When you passthrough the GPU you have blacklisted it from Proxmox, so Proxmox no longer has any access to GPU.

You need to arrange some other method of remote accessing the VM desktop as soon as that passthrough / blacklist is activated. In my case I'm a Windows user so I arrange RDP access to the VM guest, ensure that is working and then set the passthrough.