*** no AC power connected, C3 functional ***

/sys/devices/system/cpu/cpu0/cpuidle/state0/name:POLL
/sys/devices/system/cpu/cpu0/cpuidle/state0/desc:CPUIDLE CORE POLL IDLE
/sys/devices/system/cpu/cpu0/cpuidle/state0/latency:0
/sys/devices/system/cpu/cpu0/cpuidle/state0/power:4294967295
/sys/devices/system/cpu/cpu0/cpuidle/state0/usage:6
/sys/devices/system/cpu/cpu0/cpuidle/state0/time:83
/sys/devices/system/cpu/cpu0/cpuidle/state1/name:C1
/sys/devices/system/cpu/cpu0/cpuidle/state1/desc:ACPI HLT
/sys/devices/system/cpu/cpu0/cpuidle/state1/latency:1
/sys/devices/system/cpu/cpu0/cpuidle/state1/power:4294967294
/sys/devices/system/cpu/cpu0/cpuidle/state1/usage:5970
/sys/devices/system/cpu/cpu0/cpuidle/state1/time:13904231
/sys/devices/system/cpu/cpu0/cpuidle/state2/name:C2
/sys/devices/system/cpu/cpu0/cpuidle/state2/desc:ACPI IOPORT 0x4014
/sys/devices/system/cpu/cpu0/cpuidle/state2/latency:1
/sys/devices/system/cpu/cpu0/cpuidle/state2/power:4294967293
/sys/devices/system/cpu/cpu0/cpuidle/state2/usage:272806
/sys/devices/system/cpu/cpu0/cpuidle/state2/time:12986945
/sys/devices/system/cpu/cpu0/cpuidle/state3/name:C3
/sys/devices/system/cpu/cpu0/cpuidle/state3/desc:ACPI IOPORT 0x4016
/sys/devices/system/cpu/cpu0/cpuidle/state3/latency:146
/sys/devices/system/cpu/cpu0/cpuidle/state3/power:4294967292
/sys/devices/system/cpu/cpu0/cpuidle/state3/usage:8753
/sys/devices/system/cpu/cpu0/cpuidle/state3/time:124859516

*** AC power connected, no C3 (as expected) ***

/sys/devices/system/cpu/cpu0/cpuidle/state0/name:POLL
/sys/devices/system/cpu/cpu0/cpuidle/state0/desc:CPUIDLE CORE POLL IDLE
/sys/devices/system/cpu/cpu0/cpuidle/state0/latency:0
/sys/devices/system/cpu/cpu0/cpuidle/state0/power:4294967295
/sys/devices/system/cpu/cpu0/cpuidle/state0/usage:0
/sys/devices/system/cpu/cpu0/cpuidle/state0/time:0
/sys/devices/system/cpu/cpu0/cpuidle/state1/name:C1
/sys/devices/system/cpu/cpu0/cpuidle/state1/desc:ACPI HLT
/sys/devices/system/cpu/cpu0/cpuidle/state1/latency:1
/sys/devices/system/cpu/cpu0/cpuidle/state1/power:4294967294
/sys/devices/system/cpu/cpu0/cpuidle/state1/usage:58
/sys/devices/system/cpu/cpu0/cpuidle/state1/time:1903371
/sys/devices/system/cpu/cpu0/cpuidle/state2/name:C2
/sys/devices/system/cpu/cpu0/cpuidle/state2/desc:ACPI IOPORT 0x4014
/sys/devices/system/cpu/cpu0/cpuidle/state2/latency:1
/sys/devices/system/cpu/cpu0/cpuidle/state2/power:4294967293
/sys/devices/system/cpu/cpu0/cpuidle/state2/usage:685
/sys/devices/system/cpu/cpu0/cpuidle/state2/time:19171252

*** AC power disconnected, C3 not functional (bug) ***

/sys/devices/system/cpu/cpu0/cpuidle/state0/name:POLL
/sys/devices/system/cpu/cpu0/cpuidle/state0/desc:CPUIDLE CORE POLL IDLE
/sys/devices/system/cpu/cpu0/cpuidle/state0/latency:0
/sys/devices/system/cpu/cpu0/cpuidle/state0/power:4294967295
/sys/devices/system/cpu/cpu0/cpuidle/state0/usage:1
/sys/devices/system/cpu/cpu0/cpuidle/state0/time:23
/sys/devices/system/cpu/cpu0/cpuidle/state1/name:C1
/sys/devices/system/cpu/cpu0/cpuidle/state1/desc:ACPI HLT
/sys/devices/system/cpu/cpu0/cpuidle/state1/latency:1
/sys/devices/system/cpu/cpu0/cpuidle/state1/power:4294967294
/sys/devices/system/cpu/cpu0/cpuidle/state1/usage:1
/sys/devices/system/cpu/cpu0/cpuidle/state1/time:164
/sys/devices/system/cpu/cpu0/cpuidle/state2/name:C2
/sys/devices/system/cpu/cpu0/cpuidle/state2/desc:ACPI IOPORT 0x4014
/sys/devices/system/cpu/cpu0/cpuidle/state2/latency:1
/sys/devices/system/cpu/cpu0/cpuidle/state2/power:4294967293
/sys/devices/system/cpu/cpu0/cpuidle/state2/usage:1473
/sys/devices/system/cpu/cpu0/cpuidle/state2/time:45925957
/sys/devices/system/cpu/cpu0/cpuidle/state3/name:<null>
/sys/devices/system/cpu/cpu0/cpuidle/state3/desc:<null>
/sys/devices/system/cpu/cpu0/cpuidle/state3/latency:146
/sys/devices/system/cpu/cpu0/cpuidle/state3/power:4294967292
/sys/devices/system/cpu/cpu0/cpuidle/state3/usage:0
/sys/devices/system/cpu/cpu0/cpuidle/state3/time:0