laptop:/home/rick# dmesg | grep acpi
You can enable it with acpi=force
Kernel command line: root=/dev/hda1 ro force=acpi
pciehp: acpi_pciehprm:get_device PCI ROOT HID fail=0x1001
shpchp: acpi_shpchprm:get_device PCI ROOT HID fail=0x1001
acpi: Unknown symbol acpi_processor_unregister_performance
acpi: Unknown symbol acpi_processor_register_performance
acpi: Unknown symbol acpi_processor_unregister_performance
acpi: Unknown symbol acpi_processor_register_performance