Fedora :: Wake Ups (60000) Per Second Reported By PowerTop In F12

I've ran "powertop" on my computer and it showed horrible amount of wake-ups per second:

Code:
Cn Avg residency P-states (frequencies)
C0 (cpu running) (26.7%) 2.81 Ghz 100.0%
polling 0.0ms ( 0.0%) 1400 Mhz 0.0%
C1 16.2ms (60.5%) 1050 Mhz 0.0%
C2 0.0ms (12.8%) 700 Mhz 0.0%
350 Mhz 0.0%

Wakeups-from-idle per second : 63944.8 interval: 5.0s
no ACPI power usage estimate available

Top causes for wakeups:
45.1% ( 15.6) <interrupt> : pata_atiixp
26.0% ( 9.0) <kernel core> : hrtimer_start_range_ns (tick_sched_timer)
9.2% ( 3.2) <kernel core> : hrtimer_start (tick_sched_timer)
5.8% ( 2.0) <kernel core> : add_timer_on (clocksource_watchdog)
1.7% ( 0.6) <interrupt> : ohci_hcd:usb4, radeon, yenta
1.7% ( 0.6) Xorg : queue_delayed_work (delayed_work_timer_fn)

Suggestion: increase the VM dirty writeback time from 5.00 to 15 seconds with:
Echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
This wakes the disk up less frequently for background VM activity
Q - Quit R - Refresh W - Increase Writeback time
If I wait it decreases to 50000, but it is still huge!

Situation is duplicated after complete F12 re-install. All defaults are used and no changes performed after install. Just checked again and let computer run idle for a while. Powertop reports 79604 wake-up per second, even more than before. Again, the top cause is "pata_atiixp". Also, performing suggestions of powertop shown at the bottom of the program does not help either. That decreases wake-up by a few hundreds only. Wake-ups are still well over 50000.