Powertop makes suggestions. We wish it wouldn't, because they're often either things the OS could get right for you, or things that actively degrade the user experience beyond their powersaving karma. This is a list of the suggestions it makes, and what we plan to do about them.
Various kernel config options
Disable the unused bluetooth interface
Enable the ondemand cpu speed governor for all processors
Disable Ethernet Wake-On-Lan
Enable laptop-mode
Disable the NMI watchdog
Enable the HPET in your BIOS or add the kernel patch to force-enable HPET
Enable AC97 powersave mode
Enable the noatime filesystem option
Enable the power aware CPU scheduler
Increase the VM dirty writeback time
Enable SATA ALPM link power management
Enable USB autosuspend
Enable wireless power saving mode
Disable the unused WIFI radio
Disable TV out