I applied almost all the powersaving tricks and tips from lesswatts.org
and still on total idle with the screen dimmed to maximum, my laptop is
draining over 72 Watts. Here is what's PowerTop is saying:
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< Detailed C-state information is not P-states (frequencies)
1.60 Ghz 0.0%
800 Mhz 100.0%
Wakeups-from-idle per second : 451.1 interval: 10.0s
Power usage (5 minute ACPI estimate) : 72.5 W (0.3 hours left)
Top causes for wakeups:
45.3% (407.4) <kernel IPI> : Rescheduling interrupts
29.9% (269.2) <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
7.2% ( 65.1) <interrupt> : extra timer interrupt
5.6% ( 50.0) touchfreeze : hrtimer_start_range_ns
(hrtimer_wakeup)
5.3% ( 48.1) <interrupt> : ath
1.9% ( 17.4) thunderbird-bin : hrtimer_start_range_ns
(hrtimer_wakeup)
1.0% ( 9.1) <interrupt> : nvidia
0.6% ( 5.8) cairo-dock : hrtimer_start_range_ns (hrtimer_wakeup)
0.6% ( 5.0) <kernel core> : hrtimer_start (tick_sched_timer)
0.3% ( 3.0) rainlendar2 : hrtimer_start_range_ns (hrtimer_wakeup)
0.3% ( 2.6) <kernel IPI> : TLB shootdowns
0.2% ( 2.0) <interrupt> : sata_nv
0.2% ( 2.0) thunderbird-bin : sk_reset_timer (tcp_write_timer)
0.2% ( 2.0) emerald : hrtimer_start_range_ns (hrtimer_wakeup)
0.2% ( 1.7) gnome-terminal : hrtimer_start_range_ns (hrtimer_wakeup)
0.1% ( 1.3) <kernel core> : sk_reset_timer (tcp_delack_timer)
0.1% ( 1.1) checkgmail : hrtimer_start_range_ns (hrtimer_wakeup)
0.1% ( 1.0) cpupowerd : hrtimer_start_range_ns (hrtimer_wakeup)
0.1% ( 1.0) <kernel core> : nv_kern_rc_timer (nv_kern_rc_timer)
0.1% ( 0.7) gam_server : hrtimer_start_range_ns (hrtimer_wakeup)
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If I surf the web or listen to music, wakeups go haywire reaching 2500+
Please, help me with that as I am getting barely 15 minutes of battery
life while in windows it is well over an hour.
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