New answers tagged power-management
This is related to a new driver introduced in Fedora 20 that does not need more than those two governors. See this thread CPU Governors - where is ONDEMAND? for details. To have the missing governors, you should boot with the kernel parameter intel_pstate=disable. To do so, in the GRUB boot screen, choose "edit boot commandline" and add this to the line ...
RAID combines the existing drives into a "superdrive". There aren't "drives that can be turned off because they aren't being used" (unless the RAID is a separate set from the drive from which the machine boots/with the operating system).
Even if a desktop does not have a battery to power itself, it may have other devices that provide power information. For instance, Apple iPads, Logitech Unifying HIDs and power meters do not provide any more to the system, but they can report power statistics. Since the path provided to upower -i does not exist on a desktop (there is no battery, hence no ...
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