[HaBo]

sudo powertop --dump

mathias@apprentice:~$ sudo powertop --dump
PowerTOP 1.9    (C) 2007 Intel Corporation 

Collecting data for 15 seconds 
Cn	          Avg residency
C0 (cpu running)        ( 0.9%)
C1		  0.0ms ( 0.0%)
C2		 16.7ms (63.4%)
C3		 12.0ms (35.7%)
P-states (frequencies)
  1.61 Ghz     0.8%
  1.60 Ghz     0.0%
  1200 Mhz     0.0%
   800 Mhz    99.2%
Wakeups-from-idle per second : 67.7	interval: 15.0s
Power usage (ACPI estimate): 12.8W (1.9 hours) 
Top causes for wakeups:
  30.3% ( 17.5)      <kernel IPI> : Rescheduling interrupts 
  29.9% ( 17.3)       <interrupt> : iwl4965 
   6.9% (  4.0)   <kernel module> : usb_hcd_poll_rh_status (rh_timer_func) 
   4.1% (  2.4)       <interrupt> : extra timer interrupt 
   3.1% (  1.8)    gnome-terminal : schedule_timeout (process_timeout) 
   2.5% (  1.5)    wpa_supplicant : schedule_timeout (process_timeout) 
   2.1% (  1.2)              Xorg : schedule_timeout (process_timeout) 
   1.8% (  1.1)         nm-applet : schedule_timeout (process_timeout) 
   1.7% (  1.0)            dhcdbd : schedule_timeout (process_timeout) 
   1.7% (  1.0)    cpufreq-applet : schedule_timeout (process_timeout) 
   1.7% (  1.0)        cellwriter : schedule_timeout (process_timeout) 
   1.6% (  0.9)        pulseaudio : schedule_timeout (process_timeout) 
   1.5% (  0.9)       <interrupt> : ahci 
   1.4% (  0.8)    NetworkManager : schedule_timeout (process_timeout) 
   1.0% (  0.6)     <kernel core> : neigh_table_init_no_netlink (neigh_periodic_timer) 
   0.9% (  0.5)           firefox : futex_wait (hrtimer_wakeup) 
   0.9% (  0.5)   <kernel module> : neigh_table_init_no_netlink (neigh_periodic_timer) 
   0.8% (  0.5)       <interrupt> : eth0 
   0.8% (  0.5)           hid2hci : e1000_intr_msi (e1000_watchdog) 
   0.8% (  0.5)           iwl4965 : ieee80211_sta_work (ieee80211_sta_timer) 
   0.8% (  0.5)       gnome-panel : schedule_timeout (process_timeout) 
   0.6% (  0.3)   gnome-power-man : schedule_timeout (process_timeout) 
   0.5% (  0.3)           firefox : schedule_timeout (process_timeout) 
   0.3% (  0.2)              Xorg : do_setitimer (it_real_fn) 
   0.3% (  0.2)   update-notifier : schedule_timeout (process_timeout) 
   0.3% (  0.2)          nautilus : schedule_timeout (process_timeout) 
   0.3% (  0.2)       gvfsd-trash : futex_wait (hrtimer_wakeup) 
   0.2% (  0.1)      <kernel IPI> : TLB shootdowns 
   0.1% (  0.1)       <interrupt> : PS/2 keyboard/mouse/touchpad 
   0.1% (  0.1)     <kernel core> : end_that_request_last (laptop_timer_fn) 
   0.1% (  0.1)          gconfd-2 : schedule_timeout (process_timeout) 
   0.1% (  0.1)     <kernel core> : fib6_add (fib6_run_gc) 
   0.1% (  0.1)     <kernel core> : page_writeback_init (wb_timer_fn) 
   0.1% (  0.1)         iwl4965/1 : sta_info_start (sta_info_cleanup) 
   0.1% (  0.1)   gnome-volume-ma : schedule_timeout (process_timeout) 

Suggestion: Enable SATA ALPM link power management via: 
  echo min_power > /sys/class/scsi_host/host0/link_power_management_policy
or press the S key.
mathias@apprentice:~$