[vfio-users] Secondary passthrough: QXL gets disabled on boot, code 31.

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As i've said before, when the VM boots with the real GPU attached, the
emulated QXL graphics gets disabled by windows itself.
Moreover, you can install windows 7 running on QXL, then install the real
GPU drivers and the QXL will be turned off by windows.
Same thing on Windows 10.
"The device is not working properly because Windowns cannot load the
drivers required for this device (Code 31)

The driver trying to start is not the same as the driver for the POSTed
display adapter."
What the hell does this mean?
I assume the ROM of the QXL changes somehow? Why it would do so on an OVMF
system?
I'd understand it if i've had VGA stuff enabled and alive, but no, there's
no VGA leftovers anywhere... except that VBE shim lersek incorporated into
OVMF some time ago especially for Windows 7.

Anyway, i'm going to try installing the real QXL WDDM drivers, not the
microsoft default one.
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