[Bug 238729] head -r347549 on aorus gaming 7 F12e BIOS (Threadripper 1950X): boot attempts hang (but boots for fedora/Windows 10 Pro)

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238729

--- Comment #4 from Mark Millard <marklmi26-fbsd at yahoo.com> ---
(In reply to Conrad Meyer from comment #3)

I'm unsure just what comment 3 is indicating. The
FreeBSD acpidump either uses /dev/mem or uses a
dsdt input file (via -f). Quoting:

   Since only the DSDT is stored in the file, the -t flag may not be
   used with this option.

/dev/mem is not available because of lack of booting.
That left me with only dsdt as an option via that tool.

(Running under Hyper-V does not have a matching
acpi context in its /dev/mem and so is not useful.
As stands I'm unable to native-boot using FreeBSD.)

So all I got from FreeBSD's acpidump was dsdt decoding
from the dsdt.dat that I manged to get from fedora.

I've not yet figured out what all I can get from fedora's
tools. acpidump is definitely not the same as FreeBSD's
and there is a acpixtract as well.

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