[SOLVED] Issues with Intel ARC A770M GPU Passthrough on NUC12SNKi72 (vfio-pci not ready after FLR or bus reset)

[Hock Dawner]

I did dump my own vbios and try that. I will try again on another VM build.

It does work fine on Bazzite without issue, so definitely a weird Windows driver/firmware problem.

 

[Hock Dawner]

Have an update for you. Decided to use the firmware tool and go back to the last WHQL on the previous SOC firmware version (DG02_1.3257. Current version is DG02_1.3266 and has been since October 2024.) When windows detected the GPU and installed the built-in driver, I had a Code 43. I installed 101.6078 WHQL driver and it complained that it was older than what was installed, but it worked!

This is on a fresh, unmodified Windows 11 25H2. I did modify the Windows Update policy to disable driver updates. I have not dumped the vBIOS or done any custom cli commands, but am running the hookscript on the vm config. Just added the GPU as PCIe devices and it is working. Rebooting and everything without issue.

Obviously newer drivers have worked, so I think I am going to keep updating to see which version breaks everything. I went back to September 2025 WHQL and had issues, but that was before I rolled firmware back to September 2024.