Resending this because I had some issues: Dillon suggested appending these options to /boot/loader.conf: sio0.flags=0x10 sio0.baud=115200 set boot_serial="YES" console=comconsole set comconsole_speed=115200
After that, apu2d4 happily boots through serial console, no problems detected. See the screencast [1] for full /boot/loader.conf example and boot experience. Getty is spamming errors but I'm pretty sure you can disable it by turning off other gettys by editing /etc/ttys. Chris [1]: https://asciinema.org/a/TrJSLm3qeodtPCXHSrsIC1i3v
