Disabling DSI and USB-C display output possible?

Hi,

I'm facing some issues getting  the i915 driver (on a 6.1 kernel) to output in a VM (with passthrough) on the HDMI port.

It works without a problem with USB-C display output

Is it somehow possible to disable the DSI and the USB-C display output? I don't see an option in the UEFI.

The only relevant log lines from the kernel log say `VBT claims to have both internal and external displays on PHY A`.

Thank you!

~Marius