In Ubuntu 12.04 and newer, hibernation has been disabled by default in policykit. How can I enable this back?
How can I control the computer's fan speed?
On Windows there is a wonderful program called SpeedFan.
I would like closing the laptop lid to be a no-op. How can I do that?
How can I suspend or hibernate my laptop using command line, without installing additional software?
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Is it possible to greatly extend the usage time of a laptop or notebook running on battery by disabling various services and installing various packages?
What tricks or tips do people have for getting an extra hour or two out of their batteries?