[SOLVED] Windows with GPU passthrough doesn't work in VM

[dvnzecch]

Hi, I used this Reddit post (https://www.reddit.com/r/homelab/comments/b5xpua/the_ultimate_beginners_guide_to_gpu_passthrough/) to create a Windows 11 VM with GPU passthrough. It worked initially but after a Proxmox reboot, it started giving problems. When I start it, it loads, it hangs and then the blue screen comes out on the console.
I tried to recreate a Windows 11 VM (also using other sources) but it still doesn't work.

Physically connected monitor to GPU (on boot):
https://imgur.com/yAlwf9z

While this is from VM console(on boot):
https://imgur.com/JivbPqB

VM Harware:


VM Options:

 

[ZooKeeper]

Finally someone else is seeing same issue as mine. If you remove GPU pass through, I am sure it works.

 

[dvnzecch]

Finally someone else is seeing same issue as mine. If you remove GPU pass through, I am sure it works.

Yes, exactly

 

[leesteken]

What is the output of cat /proc/cmdline? Make sure to use this work-around from this thread when doing PCIe passthrough of the boot GPU.

 

[dvnzecch]

What is the output of cat /proc/cmdline? Make sure to use this work-around from this thread when doing PCIe passthrough of the boot GPU.

I used the thread and now it works! thanks, I didn't think it would work

 

[ZooKeeper]

I used the thread and now it works! thanks, I didn't think it would work

Are you systemd boot or grub? It didn't work for me.

 

[dvnzecch]

Are you systemd boot or grub? It didn't work for me.

grub