[Bug 280817] With DMAR enabled, my laptop panics

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 280817] With DMAR enabled, by system panics"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 14 Aug 2024 21:18:29 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=280817

--- Comment #2 from Konstantin Belousov <kib@FreeBSD.org> ---
If unit is not set, it is either BIOS bug, or something prevented attach from
finishing.  In either case, there should be some messages in the (verbose)
dmesg giving a hint.

Do you have AMT on this machine?  It might work as a serial console, to catch
boot-time messages.

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