Comment 3 for bug 194489

On my system (HP 6710b) when idling, powertop says:

Wakeups-from-idle per second : 589,6 interval: 10,0s
no ACPI power usage estimate available

Top causes for wakeups:
  63,0% (421,7) <interrupt> : PS/2 keyboard/mouse/touchpad
  12,4% ( 83,1) <interrupt> : yenta, HDA Intel, i915@pci:0000:00:02.0
   9,0% ( 60,4) <kernel IPI> : Rescheduling interrupts
   6,2% ( 41,2) <interrupt> : extra timer interrupt
   1,6% ( 11,0) <interrupt> : libata
   1,6% ( 10,6) <interrupt> : iwl3945

sucks