A screen saver is an animated image that appears onscreen after a fixed period when your Mac doesn’t detect any keyboard, trackpad, or mouse activity. When selecting a screen saver, you can choose an image to display and the amount of time to wait before the screen saver starts. For an eco-friendlier alternative to using. PongSaver is an macOS screensaver/clock which keeps time by using the score of a game of Pong. The left side wins once an hour, and the right side wins once a minute. How to I disable the screen saver on my 2014 MacBook Pro, running MacOS Sierra 10.12? I have a need occasionally to keep the screen display on, but I might not use it for 20 minutes at a time. I want to disable the screen saver, but the button to adjust the time (I presume it has a 'None' option) is disabled. To do this, open the System Preferences and click “Desktop & Screen Saver”. Now you can select your screen saver, which will also become your new desktop wallpaper. Next, open the Terminal, which can be found in Applications Utilities. With the Terminal open, type the following command (or just copy and paste it) and hit Enter.

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Mac OS X comes with a set of really awesome, HD screensavers. But, they can never be enough. You will want to download and install other exciting screensavers from the web – say, for example, new movie screensavers or festival-themed screensavers.

Installing screensavers were easy (they’re still easy), but the way you added them to your library has changed in Mac OS X Mavericks or Yosemite. The updates in software and GateKeeper security have made the procedure a little lengthier. And for a few people, complicated.

It is no longer a “double-click and install” procedure, especially for third-party apps. If you try to do so, you will get an error message that the file cannot be opened, as it is from an unknown developer. However, do not be disheartened! Here are a couple of ways to install your favorite screensavers from the web on your Mac OS X.

How to Add Screen Saver via Right-Click on Mac

This method works for files having an extension of, “.saver.” For the files having the extension of “.qtz” extension, follow method #2.

Step #1. Open “Finder” from your dock.

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Step #2. In it, locate the screen saver you want to install. It will end with extension “some_name.saver” (some_name being the file name.) Right-click on file and choose “open.”

Step #3. A warning message will pop up, “some_name.saver is from an unidentified developer. Are you sure you want to open it?” Click “Open.”

Step #4. Your “System Preferences” will automatically start in your Screen Saver window. With it, you will get a dialogue box asking to install the selected screensaver for the current users or all users on your Mac. Check the appropriate box and click on “Install.”

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Step #5. Now, activate the new screensaver from the list as usual.

How to Add Screensaver via Screen Saver Folder on Mac

This method works for the files having the extension of, “.qtz.”

Step #1. Press Command+Shift+G and type ~/Library/Screen Savers/

Step #2. Drag the downloaded screen saver file in the “Screen Savers” folder. (side note: you can drag .saver files into the folder and they’ll work too)

Step #3. Go back to the “Apple” menu → System Preferences → Desktop & Screen Savers to locate this file and use it.

Note that if you want the screen saver to be available for all users on your Mac, in the first step, go to /Library/Screen Savers/ (skip the ~).

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That’s all folks!

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