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I am using PCI passthrough to pass my second graphics card, an RX 5700XT to a Windows VM. Everything worked fine today, I started the VM used it for an hour and shut it down. 2 hours later I wanted to start the VM a second time, the bootscreen showed up with the TianoCore logo but after that a black screen appeared and nothing else. I tried downgrading packages to a known working state. I also tried running running the Windows iso but nothing showed up. Later I tried the Ubuntu iso which booted up but only displayed something in safe mode. I then tried booting windows in safe Mode which also worked. So I know it is nothing wrong with the VM image itself. I also tried booting the VM without passthrough which worked just fine.
I really don't know what the problem is and why the problem suddenly came about.
I have uploaded my VM config XML here: https://pastebin.com/qQdb5QEL
I would be very thankful if someone had an idea what the problem could be.
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