Hmmm ...
Looking again, it appears that APM is already compiled-in:
# dmesg | grep -i apm
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
apm: overridden by ACPI.
So looking for ACPI strings in kernel messages,
# dmesg | grep -i acpi
BIOS-e820: 0000000007ff3800 - 0000000008000000 (ACPI NVS)
ACPI: have wakeup address 0xc0001000
ACPI: RSDP (v000 COMPAQ ) @ 0x000f9970
ACPI: RSDT (v001 COMPAQ RSDB130 00000.00001) @ 0x07ff4800
ACPI: FADT (v001 COMPAQ CPQB10F 08193.01825) @ 0x07ff4828
ACPI: DSDT (v001 COMPAQ ARMADAE7 00001.00000) @ 0x00000000
ACPI: BIOS passes blacklist
ACPI: Subsystem revision 20030228
ACPI: Interpreter enabled
ACPI: Using PIC for interrupt routing
ACPI: System [ACPI] (supports S0 S1 S3 S4bios S4 S5)
ACPI: Power Resource [C13C] (on)
ACPI: Power Resource [C0E5] (on)
ACPI: Power Resource [C1A4] (off)
ACPI: Power Resource [C1A6] (off)
ACPI: Power Resource [C1A8] (off)
PCI: ACPI tables contain no PCI IRQ routing entries
apm: overridden by ACPI.
Maybe I need to give up on the 'apm' command
and look for an ACPI tool of some sort.
-- R;