This is an issue that's been reported before, and some solutions appear
to be out there, including re-installing with Legacy boot. However, they
all seem to involve modifying the installer prior to installation or
making changes via a GRUB menu. I'm never presented with a GRUB menu
with either (I suspect that's a UEFI issue), so I'm not quite sure how
to proceed with troubleshooting.  I want to stick with UEFI-only boot as
far as possible.

The last messages echoed before the black screen are:

>[VT-D]Passed iommu=no-igfx option.  Disabling IGD VT-d engine.
>Scrubbing Free RAM on 1 nodes using 2 CPUs
>Initial low memory virq threshold set at 0x4000 pages.
>Std. Loglevel: All
>Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
>Xen is relinquishing VGA console.

The screen goes black indefinitely at this point.

This is a device with only integrated GPU so I suspected this might be a

How should I proceed?

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