Cn                Avg residency         P-states (frequencies)
C0 (cpu running)        ( 1.3%)
C1                0.0ms ( 0.0%)         2.01 Ghz   ( 0.5%)
C2                2.2ms ( 2.4%)         2.00 Ghz   ( 0.0%)
C3               15.4ms (96.3%)         1.60 Ghz   ( 0.0%)
                                         800 Mhz   (99.5%)

Wakeups-from-idle per second : 73.7     interval: 20.0s
no ACPI power usage estimate available

Top causes for wakeups:
  43.9% ( 27.6)       <interrupt> : i8042
  12.3% (  7.8)      S20powernowd : queue_delayed_work_on (delayed_work_timer_fn)
   9.2% (  5.8)              Xorg : schedule_timeout (process_timeout)
   6.3% (  4.0)   <kernel module> : usb_hcd_poll_rh_status (rh_timer_func)
   5.7% (  3.6)              Xorg : do_setitimer (it_real_fn)
   2.0% (  1.2)       <interrupt> : extra timer interrupt
   1.8% (  1.1)           klipper : schedule_timeout (process_timeout)
   1.6% (  1.0)              kpdf : schedule_timeout (process_timeout)
   1.6% (  1.0)          kwrapper : do_nanosleep (hrtimer_wakeup)
   1.6% (  1.0)           knotify : do_nanosleep (hrtimer_wakeup)
   1.6% (  1.0)          ifconfig : tg3_open (tg3_timer)
   1.6% (  1.0)                sh : queue_delayed_work_on (delayed_work_timer_fn)
   1.6% (  1.0)            dhcdbd : schedule_timeout (process_timeout)
   1.6% (  1.0)     <kernel core> : queue_delayed_work_on (delayed_work_timer_fn)
   1.4% (  0.9)        ksysguardd : schedule_timeout (process_timeout)
   1.3% (  0.8)       <interrupt> : ahci
   0.7% (  0.5)            kicker : schedule_timeout (process_timeout)
   0.6% (  0.4)    NetworkManager : schedule_timeout (process_timeout)
   0.6% (  0.4)     <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
   0.4% (  0.2)   <kernel module> : neigh_table_init_no_netlink (neigh_periodic_timer)
   0.3% (  0.2)    adept_notifier : schedule_timeout (process_timeout)
   0.3% (  0.2)     <kernel core> : __netdev_watchdog_up (dev_watchdog)
   0.3% (  0.2)     <kernel core> : page_writeback_init (wb_timer_fn)
   0.3% (  0.2)              kded : schedule_timeout (process_timeout)
   0.3% (  0.2)   guidance-power- : schedule_timeout (process_timeout)
   0.2% (  0.1)         ssh-agent : schedule_timeout (process_timeout)
   0.2% (  0.1)         ssh-agent : do_setitimer (it_real_fn)
   0.2% (  0.1)         klauncher : schedule_timeout (process_timeout)
   0.1% (  0.1)           konsole : schedule_timeout (process_timeout)
   0.1% (  0.1)           pdflush : __make_request (blk_unplug_timeout)
   0.1% (  0.1)              cron : do_nanosleep (hrtimer_wakeup)
   0.1% (  0.1)          gconfd-2 : schedule_timeout (process_timeout)
   0.1% (  0.1)              hald : schedule_timeout (process_timeout)
   0.1% (  0.1)           syslogd : do_setitimer (it_real_fn)


after a while without doing anything fancy:

Cn                Avg residency         P-states (frequencies)
C0 (cpu running)        (52.7%)
C1                0.0ms ( 0.0%)         2.01 Ghz   ( 0.7%)
C2                0.0ms ( 0.2%)         2.00 Ghz   ( 0.0%)
C3                0.1ms (47.1%)         1.60 Ghz   ( 0.0%)
                                         800 Mhz   (99.3%)

Wakeups-from-idle per second : 6119.2   interval: 10.0s
no ACPI power usage estimate available

Top causes for wakeups:
  59.7% (189.6)       <interrupt> : i8042
  15.6% ( 49.6)              Xorg : schedule_timeout (process_timeout)
   7.6% ( 24.2)              Xorg : do_setitimer (it_real_fn)
   6.8% ( 21.6)       soffice.bin : schedule_timeout (process_timeout)
   3.8% ( 12.1)      S20powernowd : queue_delayed_work_on (delayed_work_timer_fn)
   1.2% (  3.9)   <kernel module> : usb_hcd_poll_rh_status (rh_timer_func)
   1.1% (  3.4)       <interrupt> : extra timer interrupt
   0.5% (  1.5)           klipper : schedule_timeout (process_timeout)
   0.3% (  1.0)          kwrapper : do_nanosleep (hrtimer_wakeup)
   0.3% (  1.0)          ifconfig : tg3_open (tg3_timer)
   0.3% (  1.0)     <kernel core> : queue_delayed_work_on (delayed_work_timer_fn)
   0.3% (  1.0)        ksysguardd : schedule_timeout (process_timeout)
   0.3% (  1.0)                sh : queue_delayed_work_on (delayed_work_timer_fn)
   0.3% (  1.0)            dhcdbd : schedule_timeout (process_timeout)
   0.3% (  1.0)           knotify : do_nanosleep (hrtimer_wakeup)
   0.3% (  1.0)              kpdf : schedule_timeout (process_timeout)
   0.3% (  0.8)       <interrupt> : ahci
   0.2% (  0.6)            kicker : schedule_timeout (process_timeout)
   0.1% (  0.4)    NetworkManager : schedule_timeout (process_timeout)
   0.1% (  0.3)   <kernel module> : neigh_table_init_no_netlink (neigh_periodic_timer)
   0.1% (  0.3)     <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer)
   0.1% (  0.2)    adept_notifier : schedule_timeout (process_timeout)
   0.1% (  0.2)     <kernel core> : __netdev_watchdog_up (dev_watchdog)
   0.1% (  0.2)     <kernel core> : page_writeback_init (wb_timer_fn)
   0.1% (  0.2)              kded : schedule_timeout (process_timeout)
   0.1% (  0.2)   guidance-power- : schedule_timeout (process_timeout)
   0.0% (  0.1)         klauncher : schedule_timeout (process_timeout)
   0.0% (  0.1)       soffice.bin : futex_wait (hrtimer_wakeup)
   0.0% (  0.1)     <kernel core> : inet_initpeers (peer_check_expire)
   0.0% (  0.1)         ssh-agent : schedule_timeout (process_timeout)
   0.0% (  0.1)         ssh-agent : do_setitimer (it_real_fn)