Comment 67 for bug 373245

Same problem! VERY frustrating to see that in Karmic. I am on Samsung X460 and my battery life is not where it should be. I've disabled wireless and unloaded it's module but it did not make any difference.

Wakeups-from-idle per second : 403.2 interval: 10.0s
Power usage (ACPI estimate): 16.9W (3.7 hours) (long term: 19.4W,/3.2h)

Top causes for wakeups:
  24.3% (157.0) <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
  20.7% (133.7) <interrupt> : extra timer interrupt
  16.2% (104.7) exe : hrtimer_start_range_ns (hrtimer_wakeup)
   9.0% ( 57.9) <interrupt> : HDA Intel
   7.5% ( 48.5) pulseaudio : hrtimer_start_range_ns (hrtimer_wakeup)
   5.1% ( 33.2) <kernel IPI> : Rescheduling interrupts