Hi!

Since 11.2-RELESE, default console driver vt(4) checks ACPI table for presence 
of VGA in the system.
It does not initialize console (no input, no output) if ACPI states there is no 
VGA adapter.

There are PRs describing many cases when VGA is present but ACPI lies
and we have a regression compared with 11.1 and earlier:
FreeBSD cannot be installed interactively onto such a system, leaving aside 
serial console.

vt(4) has loader knob to restore pre-11.2 behaviour and ignore ACPI:

hw.vga.acpi_ignore_no_vga=1

Should we add this unconditionally to the installation media designed for 
interactive VGA-based installation?
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