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I want to make my computer to turn back on automatically when it is powered off by some reason. Is this possible ?

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  • Make and model of computer? What Ubuntu release are you running?
    – Mitch
    Aug 5, 2013 at 9:27

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This is usually a BIOS setting but one I've only really noticed on higher-end motherboards. Fish around in the advanced and power settings and look for items with "AC" in the title. Here's a Tom's Hardware Article on the power settings which includes such an option, called "AC Power Loss Restart" here... But the exact name does vary.

If you can't find or don't have a setting like that your alternative is better but more expensive: a UPS. Essentially a big 12V battery that you plug your computer in to. It'll handle surges and should keep the computer running for a period of time (determined by the size of the battery). Getting the battery size correct is important (too much load on a small battery can fry the UPS) but 1000VA is a good start for the average destkop.

I don't think there's a pure-software solution to this. My next alternative involved a Lego Mindstorm robot that presses your power (and then Escape) button on a schedule... But now we're getting weird.

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  • Nice. I will try with the software solution and if my server go well then I will buy UPS. Aug 5, 2013 at 20:21

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