[Bug 289092] Boot a FreeBSD 14.x system from a serial console work partially, unlike 13.x.

From: <bugzilla-noreply_at_freebsd.org>
Date: Mon, 25 Aug 2025 06:22:55 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289092

            Bug ID: 289092
           Summary: Boot a FreeBSD 14.x system from a serial console work
                    partially, unlike 13.x.
           Product: Base System
           Version: 14.3-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: pascal.fabbri@epfl.ch

By configuring the system as described in Chapter 29.6.3, Setting a Faster
Serial Port Speed, of the FreeBSD Handbook:

/boot/loader.con
boot_multicons="YES"
boot_serial="YES"
comconsole_speed="115200"
console="comconsole,vidconsole"

FreeBSD 13.x works fine, but FreeBSD 14.x does not. Why is it not working?

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