Comment 4 for bug 229693

my point is that enabling laptop mode in acpi-support may be unnecessary in the first place since pm-utils has its own hdd settings under /usr/lib/pm-utils/power.d/laptop-tools which are already called. if they are not being called correctly (e.g., startup/resume on battery power when poweroff/sleep was on ac) then that is a pm-utils bug.

so the current fix holds the potential of creating conflicting settings between acpi and pm-utils where the two overlap. i think it would be a cleaner "ugly" solution to stick with the pm-utils framework (which is more streamlined and less confusing, IMO) rather than creating potential conflict between the two.