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Date:      Thu, 27 Nov 2025 16:05:26 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 291248] Selecting "Cons: Serial" in loader results in Dual Console: Video Primary, Serial Secondary
Message-ID:  <bug-291248-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291248

            Bug ID: 291248
           Summary: Selecting "Cons: Serial" in loader results in Dual
                    Console: Video Primary, Serial Secondary
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: misc
          Assignee: bugs@FreeBSD.org
          Reporter: emaste@freebsd.org

disc1.iso built on a wip branch off main as of today
(4e22cd3bf0b4112e541bc585a6be57662cb0b52b)

Reproduction steps:

1. Boot FreeBSD installer disc1.iso in QEMU with a command like
`qemu-system-x86_64 -m 1G -nographic -serial mon:stdio /path/to/disc1.iso`

2. Type `5` multiple times until Cons: Serial is selected
  _____              ____ ____  ____     ___           _        _ _
 |  ___| __ ___  ___| __ ) ___||  _ \   |_ _|_ __  ___| |_ __ _| | | ___ _ __
 | |_ | '__/ _ \/ _ \  _ \___ \| | | |   | || '_ \/ __| __/ _` | | |/ _ \ '__|
 |  _|| | |  __/  __/ |_) |__) | |_| |   | || | | \__ \ || (_| | | |  __/ |
 |_|  |_|  \___|\___|____/____/|____/   |___|_| |_|___/\__\__,_|_|_|\___|_|



 ╔════════ Welcome to FreeBSD ══════════╗     ```                        `
 ║                                      ║    s` `.....---.......--.```   -/
 ║  1. Boot Installer [Enter]           ║    +o   .--`         /y:`      +.
 ║  2. Boot Single user                 ║     yo`:.            :o      `+-
 ║  3. Escape to loader prompt          ║      y/               -/`   -o/
 ║  4. Reboot                           ║     .-                  ::/sy+:.
 ║  5. Cons: Serial                     ║     /                     `--  /
 ║                                      ║    `:                          :`
 ║  Kernel:                             ║    `:                          :`
 ║  6. kernel (1 of 1)                  ║     /                          /
 ║                                      ║     .-                        -.
 ║  Options:                            ║      --                      -.
 ║  7. Boot Options                     ║       `:`                  `:`
 ║                                      ║         .--             `--.
 ╚══════════════════════════════════════╝            .---.....----.

3. Use `2` to boot single user
4. Observe kernel message "Dual Console: Video Primary, Serial Secondary" and
no more output

Because of `-nographic` on the command line there is no way to interact with
the VM

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