acpi_log.sh

# Requires ACPI debugging to be enabled; see https://pikeralpha.wordpress.com/2013/12/23/enabling-acpi-debugging/

# For streaming ACPI debug logs (e.g. hot (un)plugging USB-C/TB3 devices)
log stream --predicate 'process == "kernel" AND senderImagePath CONTAINS "AppleACPIPlatform"' --style syslog | awk '/ACPI Debug/{getline; getline; print}'

# For viewing previous ACPI debug logs (since boot)
log show --last boot --predicate 'process == "kernel" AND senderImagePath CONTAINS "AppleACPIPlatform"' --style syslog | awk '/ACPI Debug/{getline; getline; print}

SSDT-DBG.dsl

DefinitionBlock ("", "SSDT", 1, "APPLE ", "Debug", 0x00001000)
{
    /*
     * Many OEM ACPI implementations have a ADBG function which is used for
     * debug logging. In almost all cases, this function calls MDBG, which is
     * supposed to be defined in a ACPI debug SSDT (but is usually missing).
     * This should make ADBG functional.
     */
    Method (MDBG, 1, NotSerialized)
    {
        Debug = Arg0
    }
}