PowerTOP 1.13   (C) 2007 - 2010 Intel Corporation 

Collecting data for 300 seconds 
...
Wakeups-from-idle per second : 232.1	interval: 300.0s
no ACPI power usage estimate available
Top causes for wakeups:
  26.1% ( 14.9)   kworker/0:0
  19.8% ( 11.3)   [uhci_hcd:usb4, ath] <interrupt>
   8.8% (  5.0)   [kernel scheduler] Load balancing tick
   8.7% (  5.0)   syndaemon
   7.0% (  4.0)   avant-window-na
   6.6% (  3.8)   Xorg
   4.7% (  2.7)   [kernel core] hrtimer_start (tick_sched_timer)
   4.0% (  2.3)   awn-applet
   3.5% (  2.0)   python
   2.9% (  1.7)   gnome-terminal
   1.8% (  1.0)   gvfs-afc-volume
   1.5% (  0.8)   [ehci_hcd:usb1, uhci_hcd:usb2, i915] <interrupt>
   1.1% (  0.6)   [acpi] <interrupt>
   0.5% (  0.3)   wpa_supplicant
   0.4% (  0.3)   gnome-settings-
   0.3% (  0.2)   NetworkManager
   0.3% (  0.1)   [ata_piix] <interrupt>
   0.2% (  0.1)   rtkit-daemon
   0.2% (  0.1)   [kernel core] start_rt_bandwidth (sched_rt_period_timer)
   0.2% (  0.1)   avahi-daemon
   0.2% (  0.1)   [Rescheduling interrupts] <kernel IPI>
   0.2% (  0.1)   gnome-power-man
   0.2% (  0.1)   ssh-agent
   0.2% (  0.1)   kerneloops
   0.2% (  0.1)   [uhci_hcd:usb3] <interrupt>
   0.1% (  0.0)   flush-8:0
   0.1% (  0.0)   rsyslogd
   0.1% (  0.0)   kworker/u:0
   0.1% (  0.0)   upowerd
   0.1% (  0.0)   gconfd-2
   0.1% (  0.0)   USB device  3-1 : USB Receiver (Logitech)
   0.0% (  0.0)   cron
   0.0% (  0.0)   [Function call interrupts] <kernel IPI>
   0.0% (  0.0)   [kernel core] cfq_arm_slice_timer (cfq_idle_slice_timer)
   0.0% (  0.0)   [kernel core] add_timer (peer_check_expire)
   0.0% (  0.0)   dbus-daemon
   0.0% (  0.0)   winbindd
   0.0% (  0.0)   nm-applet
   0.0% (  0.0)   khungtaskd