PowerTOP 1.11   (C) 2007, 2008 Intel Corporation 

Collecting data for 100 seconds 


Cn	          Avg residency
C0 (cpu running)        ( 0.3%)
polling		  0.0ms ( 0.0%)
C1		  0.0ms ( 0.0%)
C2		  1.1ms ( 0.0%)
C3		 42.1ms (99.7%)
P-states (frequencies)
Wakeups-from-idle per second : 23.9	interval: 100.0s
no ACPI power usage estimate available
Top causes for wakeups:
  64.2% ( 19.7)       <interrupt> : acpi 
  10.6% (  3.3)          events/0 : queue_delayed_work (delayed_work_timer_fn) 
   9.0% (  2.8)       <interrupt> : extra timer interrupt 
   3.4% (  1.0)              kwin : hrtimer_start_range_ns (hrtimer_wakeup) 
   3.3% (  1.0)              Xorg : hrtimer_start_range_ns (hrtimer_wakeup) 
   3.3% (  1.0)          kwrapper : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.8% (  0.2)       <interrupt> : ata_piix 
   0.8% (  0.2)    NetworkManager : atl2_open (atl2_watchdog) 
   0.7% (  0.2)     <kernel core> : page_writeback_init (wb_timer_fn) 
   0.7% (  0.2)              kded : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.6% (  0.2)              init : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.4% (  0.1)     <kernel core> : add_timer (neigh_periodic_timer) 
   0.4% (  0.1)   <kernel module> : add_timer (neigh_periodic_timer) 
   0.3% (  0.1)         ssh-agent : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.3% (  0.1)          kdesktop : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.2% (  0.1)           konsole : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.2% (  0.1)   knetworkmanager : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.2% (  0.1)              kmix : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.1% (  0.0)            kicker : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.1% (  0.0)              hald : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.1% (  0.0)           async/1 : blk_add_timer (blk_rq_timed_out_timer) 
   0.1% (  0.0)           pdflush : blk_plug_device (blk_unplug_timeout) 
   0.1% (  0.0)     <kernel core> : queue_delayed_work (delayed_work_timer_fn) 
   0.0% (  0.0)       <interrupt> : PS/2 keyboard/mouse/touchpad 
   0.0% (  0.0)       <interrupt> : uhci_hcd:usb5, HDA Intel, i915@pci:0000:00:02.0 
   0.0% (  0.0)   <kernel module> : queue_delayed_work (delayed_work_timer_fn) 
   0.0% (  0.0)         hd-audio0 : schedule_timeout_uninterruptible (process_timeout) 
   0.0% (  0.0)              cron : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.0% (  0.0)          rsyslogd : hrtimer_start_range_ns (hrtimer_wakeup) 
   0.0% (  0.0)        khungtaskd : schedule_timeout_interruptible (process_timeout) 
   0.0% (  0.0)   <kernel module> : add_timer (addrconf_verify) 
   0.0% (  0.0)     <kernel core> : add_timer (peer_check_expire) 

A USB device is active 100.0% of the time:
USB device  1-5 : UB6225 (ENE)

Suggestion: Enable USB autosuspend by pressing the U key or adding 
usbcore.autosuspend=1 to the kernel command line in the grub config

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

Recent USB suspend statistics
Active  Device name
100.0%	USB device  1-5 : UB6225 (ENE)
  0.0%	USB device usb5 : UHCI Host Controller (Linux 2.6.30-rc1eeepc uhci_hcd)
  0.0%	USB device usb4 : UHCI Host Controller (Linux 2.6.30-rc1eeepc uhci_hcd)
  0.0%	USB device usb3 : UHCI Host Controller (Linux 2.6.30-rc1eeepc uhci_hcd)
  0.0%	USB device usb2 : UHCI Host Controller (Linux 2.6.30-rc1eeepc uhci_hcd)
100.0%	USB device usb1 : EHCI Host Controller (Linux 2.6.30-rc1eeepc ehci_hcd)