# Boot: QEMU_EXTRA="-acpitable file=ssdt_a.aml", patched apple_gmux.ko (fix.diff applied,
# module-only rebuild on the guest). Verbatim serial-console capture:
#   kldload /root/gmuxobs_a/gmuxobs.ko
#   hw.gmuxobs_scr: 0
#   gmuxobs: COM1 SCR (0x3ff) at module load = 0x00
#   kldload /root/apple_gmux_fixed.ko
apple_gmux0: <apple gmux controller> port 0x333-0x336 on acpi0
apple_gmux: gmux I/O region too small (4 bytes, need >= 120)
device_probe_and_attach: apple_gmux0 attach returned -19
#   sysctl hw.gmuxobs_scr
hw.gmuxobs_scr: 0