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There is a 'power- nap' feature on new mackbooks which keeps all the activity going even when the lid is closed.(eg. downloading email,backing up,syncing) Is there any such feature on ubuntu?

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up vote 4 down vote accepted

Yup. You can tell it to take no action when the lid is closed (Settings > Power). That's as close as you'll get to a "power nap" either on Ubuntu or Windows - the power savings of a "power nap" are negligible at best.

Other than that (really just leaving your laptop on), there's nothing you can do as far as I know.

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Install TLP and configure your screen to turn off in lowest possible interval, you will get similar savings.

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