Power management: July 2008 Archives

Heather Clancy at the Green Tech Pastures blog from ZDNet writes about Faronics' power-management software, which now runs in Mac's OS X in addition to Windows:

The Power Save Mac 2.0 software includes intelligent shutdown functions; the ability to schedule when a system should be awake, asleep or in standby; the ability to customize what "inactivity" means for a particular system; enterprise control; and a reports feature that generates records of energy and cost savings. The report generator creates a "before" record of your computer, as well, which serves as a benchmark against which savings are calculated.

Faronics estimates that using the utility will save you $25 per year. How much does the package cost? $14.10 per year.

Power management has been one of my biggest headaches in Linux and the BSDs. For me, even getting the CPU fan under control in my Gateway Solo 1450 laptop usually requires a bit of work. For a short bit of time, the 2.6.18 Linux kernel did this automatically, but since then I've had to write simple scripts to get the fan to only turn on when CPU temperature warrants it.

And as far as CPU throttling goes, — slowing down and using less power when it's not needed, I haven't yet been able to implement that, even though it seemingly should work on a Celeron M processor.

The biggest power-management issue I have is with suspend/resume. I suspect that suspend/resume hasn't worked that well for that long on most PCs even in Windows, but these days I figure that hardware manufacturers of Windows-compatible PCs supply drivers to implement power management to at least some degree.

Power-management is great on our iBook G4. Using that laptop has made me expect good power-management from all of my other machines. And yes, I'd like to get it.

I'm even willing to work at the command line to make it happen, but the information I have, for the Gateway anyway, is sparse at best, and plain wrong at worst.

There's been quite a bit of rumbling about Sidux, a 2-year-old distribution based on the unstable Debian Sid GNU/Linux, with a shortish Carla Schroder review and a "why the hell does it exist" slamming from Matt Asay.

It means I'll have to try it.

An even newer Ubuntu-based distro is wattOS, which is designed to save power.

While still in an alpha state, it appears to be another one to try. Full power management under Linux is extremely important — and not always achievable.