[Bug 268393] system always reboots once from a powered off state

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 15 Dec 2022 13:22:38 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268393

            Bug ID: 268393
           Summary: system always reboots once from a powered off state
           Product: Base System
           Version: 13.1-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: jon@xyinn.org

Hello all,

It seems that there is a weird bug that is affecting my motherboard. Each time
that I turn on my computer (cold boot, and not a reboot), the freebsd kernel
starts up, I see the first few messages, and then the system will reboot. Upon
reboot, the second time it will succeed and there will be no issues. If I do a
'reboot', it will work. However, if I do a 'poweroff' and then manually start
the machine up, it will again reboot once upon booting and then continue
working.

I tried isolating the issue by commenting out any modules that load (amdgpu,
vboxdrv, and if_re. The built in if_re doesn't support my mobo's ethernet
chipset (RTL8125 2.5GbE Controller) so I have to use the net/realtek-re-kmod
port's version of it).

Attached is some information about my system:

- FreeBSD 13.1-STABLE #4 stable/13-n253282-50f61166f7b9
- Motherboard: ASUS TUF GAMING X670E-PLUS WIFI ->
https://www.asus.com/us/motherboards-components/motherboards/tuf-gaming/tuf-gaming-x670e-plus-wifi/

I'll be linking a video demonstrating the issue as well.

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