> The kernel's power management subsystem has become increasingly effective over recent years, to the point that our CPU power management is said to be second to none.
OK, now I am confused.
I always put MacBook's phenomenal battery life to excellent software power management, and by implication the Linux ecosystem had a bit of catching up to do. Admittedly this based purely on observation that MacBook's are nearly identical. For example the MacBook pro's battery capacity is approx 210kJ, a Dell is 180kJ. The other components - CPU, graphics card, memory, disk drive are all the same. Yet the Mac will last 10 hours, and the Dell 4.
Can someone with a clue tell me what is really going on?