PCIe Passtrhough iommu notifier about macos-simple-kvm HOT 10 OPEN

What version of QEMU are you using? That's an error arising from old versions (2.6+).

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I'm using version 3.1.0 (Debian 1:3.1+dfsg-2ubuntu3.1)

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Try removing -device amd-iommu if you haven't already. I tried it with that option and got the same error.

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You don't need an amd-iommu device, that's only for the host.

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Ok now I get (display did react though):
WARNING: Image format was not specified for 'BaseSystem.img' and probing guessed raw. Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted. Specify the 'raw' format explicitly to remove the restrictions. qemu-system-x86_64: vfio: Unable to power on device, stuck in D3 qemu-system-x86_64: vfio: Unable to power on device, stuck in D3 qemu-system-x86_64: vfio-pci: Cannot read device rom at 0000:20:00.0 Device option ROM contents are probably invalid (check dmesg). Skip option ROM probe with rombar=0, or load from file with romfile=

Then I added vbios.rom in the project root folder and firmware folder and now I just get a blank screen with just this in the terminal, Qemu-System-x86-64 is open on the desktop though and just says "qemy monitor 3.1.0, type help:
WARNING: Image format was not specified for 'BaseSystem.img' and probing guessed raw. Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted. Specify the 'raw' format explicitly to remove the restrictions.

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When dumping the ROM from your GPU, make sure to not use a tainted version (the Linux kernel applies changes that cause the ROM to be invalid).

In addition, make sure your GPU doesn't suffer from the PCI Bus Reset bug (which means the card cannot reset itself to a clean state via software, you have to manually restart the host before it will work). If it does, you will have to power cycle every time you use the VM (sometimes sleep works).

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Can I also dump the ROM via GPU-Z in windows? Or does it have to be via linux? (I tried to follow the Arch wiki guide but failed badly so I decided just used a techpowerup rom)

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GPU-Z dumps are fine, or from nvflash/atiflash.

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Using the GPU'z file I can see that the screen gets wiped, but it stays dark.
Using Virt-Manager, I get a display on my ubuntu screen, and it doesn't see the PCIe card..

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Ok now I got something after rebooting: qemu-system-x86_64: vfio:

qemu-system-x86_64: vfio: Unable to power on device, stuck in D3
qemu-system-x86_64: vfio: Unable to power on device, stuck in D3

How would I verify the reset bug? I can't find anything on a 750ti.
Also any idea why my my system won't power down or reboot anymore after enabling this vfio stuff?

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