powertop shows REQUESTED C-states

Cn	          Avg residency
C0 (cpu running)        (19.8%)
polling		  0.0ms ( 0.0%)
C1 mwait	496.2ms ( 2.1%)
C2 mwait	  2.2ms (34.5%)
C3 mwait	  2.8ms (43.6%)