Autosuspend not working

[pespin]

while being unplugged from power, autosuspend is not working, which means that the phone is not suspended unless you do so manually.

I get this in /var/log/fsodeviced.log, I guess it's related to the problem:
2012-01-12T11:29:12.112354Z [WARN] Kernel26AggregatePowerSupply </sys/class/power_supply>: POWER_SUPPLY_TYPE not present, checking for POWER_SUPPLY_TECHNOLOGY...
2012-01-12T11:29:12.112709Z [WARN] Kernel26AggregatePowerSupply </sys/class/power_supply>: Not present; treating it like an AC adapter
2012-01-12T11:29:12.112994Z [WARN] Kernel26AggregatePowerSupply </sys/class/power_supply>: POWER_SUPPLY_ONLY not present, ignoring power supply change notification

I get power notifications though:
2012-01-12T14:53:46.447331Z [INFO] Kernel26AggregatePowerSupply </sys/class/power_supply>: Got power status change notification for ac: offline
...
2012-01-12T14:53:49.478890Z [INFO] Kernel26AggregatePowerSupply </sys/class/power_supply>: Got power status change notification for usb: online

[iwdy23]

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