PCIe/GPU passthrough broken ?

[devilrunner]

Dear,

I recently upgraded my proxmox box.

I was running;
pve-manager: 4.2-17
qemu-server: 4.0-85
pve-qemu-kvm: 2.6-1

It upgraded to;
pve-manager: 4.3-1
qemu-server: 4.0-88
pve-qemu-kvm: 2.6.1-6

I use proxmox for a series of VM's with GPU's passthrough.
I have since noticed that while my windows boxes still work my linux VM's don't.
They are complaining about Xorg server not being able to get the state of connected monitors.
Is this an issue with the new OVMF work?

Kind regards;
robin sandra