raptwa

Yep, I just got an answer from them. Q: I am running a Windows 10 VM with GPU passthrough (KVM + VFIO). It is working fine, when the GPU is in PCIE slot 2 or 3. However it is not working, when the GPU is in PCIE slot 1. Is this a known issue? A (ASRock Support): Normally it should work. Maybe you can check the slot settings in the bios.

Hello, your build is very nice 😀. My configuration is not that impressive, but I am using the small version of your mainboard (romed8u-2t). There is one issue I am facing and not able to resolve. Have you tried passing through a GPU in the first PCIE slot? I cant get it working. The host is using the internal BMC graphics for boot and when it is up. Both external GPU are correctly taken over by vfio and can be passed throught to any Windows VMs, except when they are plugged into the first PCIE slot. In this case Windows is booting up only in save mode, without any graphics driver. Thanks!