Thinkpad X40 also shows surprisingly many wakeups:
Top causes for wakeups: 35.7% (205.3) <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
Thinkpad X40 also shows surprisingly many wakeups:
Top causes for wakeups: start_range_ ns (tick_sched_timer)
35.7% (205.3) <kernel core> : hrtimer_