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I stop my computer from sleeping by going into System Preferences > Energy Saver > Power Adapter and sliding "Turn display off after:" to 'Never'.

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But after a long time the mac screensaver turns on and I have to type my password to get back into the computer.

How do I stop that from happening?

I want my computer to forever stay as I left it, and not start screensavers or log me out or anything.

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  • The only solution I have found is to use an app like Caffeine or Amphetamine to keep the machine awake "forever."
    – Dave Nelson
    Commented Jan 24, 2019 at 13:08

3 Answers 3

Reset to default
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From the Apple menu, choose System Preferences…, then click Desktop & Screen Saver. Click the Screen Saver tab. Then set Start after: to: Never

Screen Saver Preferences

If the option is grayed out:

The system administrator has set the screensaver timeout. You can't change it without removing the profile, which will probably cause you to lose network access.

(Source)

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You can turn off the password requirement to quit the screensaver in System Preferences > Security > General.

Then your Mac will wake from sleep/screensaver with just a nudge of the mouse/touchpad, or a keypress.

Bear in mind that without this password protection, anyone can access your MacBook when it is unattended, or if they steal it. The password requirement does not log you out: it just locks the screen.

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Go to: System Preferences > Desktop/Screensaver then on the bottom left click "Start after....' and change it to 'Never'

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  • What to do if the Start after button is greyed out and don't do anything on clicking.
    – user318572
    Commented Jan 24, 2019 at 12:55
  • That's a very good question. If there's not a simple explanation here, that might make a great stand alone question if you want to ask it @user318572
    – bmike ♦
    Commented Jan 24, 2019 at 13:06

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