SeaBIOS fails to boot with Display=None, and OVMF fails to read data from VirtiO disks?

I have a VM using GPU passthrough - and it works fine. I can see the GPU inside the VM and interact with it generally. In an effort to use this GPU as my primary display, I need to _disable_ the implicit video device that Proxmox firmware supplies to the VM, so I changed `Hardware` > `Display` = `none` in the VM instance settings.

At this point the VM no longer boots. The device spins consuming ~12% CPU and about 100% memory.



This is obviously very bad - so I went through many...

Read more