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Released October 2008 / 2.4, 2.53, 2.66, 2.8 or 2.93 GHz Core 2 Duo Processor

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MacBook goes to sleep at random intervals

Hi all, My wife's Mac keeps going to sleep at random intervals

its a MacBook5,1 Mac-F42D89C8

This can happen at any time including :

Regardless of being plugged into the charger or running on battery

If it's writing a CD it will sometimes enter sleep mode

When synchronising with an ipod - it will sometimes enter sleep mode

I've even gone as far as using a spare hard-drive, formatting it and installing EL Capitan on it - after the install had finally finished - I had hoped that the sleep issue would disappear...

Around 10 minutes later - it went into sleep mode again

the only way to wake it would be from pressing the power button and waiting for a response..



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I have this problem also with a mid2012 MacBook Pro. There were no problems with this computer until a repair company replaced a dying battery. Immediately after that the MacBook started going to sleep without warning. It happens both when plugged in and when running off battery only.


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We had same issue here. Somehow the powersettings got screwed up. Al though it showed go to sleep after 45 min it was ignored. I suggest you drag the slider some where else. Restart machine and try.

you can always use the terminal to force:

  1. Never go into computer sleep mode
sudo systemsetup -setcomputersleep Off > /dev/null

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Andy C sarà eternamente grato.
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