Hello! Hoping someone can help me. Far from a pro, definitely in need of help from someone who knows more than I!

I've had a Windows 11 VM for quite a while now, never had any issues. Recently Windows popped up with an update that said "Repair Version", which I installed and repaired my Windows 11 install. Not sure why that happened or what that was. Shortly after (hours/days), but not immediately after, my VM suddenly stopped displaying any image at all. Not sure if the two are related.

I can still access my VM through VNC but GPU passthrough has entirely stopped working, quite out of the blue.

Diagnostics have been linked. Thank you to anyone who might be able to help.

I've created a new Win11 VM to see if the GPU would work with that, to no avail. I've also grabbed a newer GPU bios that also seems to have done nothing. I've also unbinded and rebinded GPU and GPU audio. I also uninstalled the most recent updates on Windows 11. Nothing seems to have worked. Hopefully something in my diagnostics will solve this.

Thank you !

korintower-diagnostics-20250817-2130.zip

On 8/18/2025 at 3:46 AM, PlexAJ said:

Nothing seems to have worked. Hopefully something in my diagnostics will solve this.

besides AMD is really not my recommended platform for VM passthrough usage, lets see

you have 2 GPUs in your System, a AMD and a NV card

1/ assuming you want to pass the NV card to your VM, remove the vbios setup, shouldnt be needed since a long time now and enable mutifunction

<hostdev mode='subsystem' type='pci' managed='yes'>

<driver name='vfio'/>

<source>

<address domain='0x0000' bus='0x21' slot='0x00' function='0x0'/>

</source>

<rom file='/mnt/vm_cache/isos/vbios/rtx 3060ti.rom'/>

<address type='pci' domain='0x0000' bus='0x04' slot='0x00' function='0x0'/>

</hostdev>

<hostdev mode='subsystem' type='pci' managed='yes'>

<driver name='vfio'/>

<source>

<address domain='0x0000' bus='0x21' slot='0x00' function='0x1'/>

</source>

<address type='pci' domain='0x0000' bus='0x05' slot='0x00' function='0x0'/>

</hostdev>

2/ when looking at your vfio bind setup

BIND=0000:23:00.3|1022:148c 0000:03:00.0|1002:744c 0000:03:00.1|1002:ab30 0000:05:00.3|1022:148c

3/ comparing with your devices ... doesnt match, looks more you bind your AMD card ?

03:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900 XTX/7900 GRE/7900M] [1002:744c] (rev c8)

Subsystem: Sapphire Technology Limited PULSE RX 7900 XTX [1da2:471e]

Kernel driver in use: vfio-pci

Kernel modules: amdgpu

03:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 HDMI/DP Audio [1002:ab30]

Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 HDMI/DP Audio [1002:ab30]

Kernel driver in use: vfio-pci

..

.

21:00.0 VGA compatible controller [0300]: NVIDIA Corporation GA104 [GeForce RTX 3060 Ti Lite Hash Rate] [10de:2489] (rev a1)

Subsystem: Gigabyte Technology Co., Ltd Device [1458:405e]

Kernel driver in use: vfio-pci

Kernel modules: nouveau

21:00.1 Audio device [0403]: NVIDIA Corporation GA104 High Definition Audio Controller [10de:228b] (rev a1)

Subsystem: Gigabyte Technology Co., Ltd Device [1458:405e]

Kernel driver in use: vfio-pci

may cross check or am i may missunderstanding here something ?