Make sure that: choose Apple () menu > System Preferences, then click Energy Saver. Adjust one or more of the following controls to affect when your Mac goes to sleep. Some of these controls might not be available on your Mac. • 'Turn display off after' slider • 'Display sleep' slider • 'Computer sleep' slider If a slider is set to 'Never,' sleep is disabled for that feature. • button Make sure that you aren't putting your Mac to sleep accidentally: • Pressing the can put your Mac to sleep.

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If you have Mountain Lion installed, you can choose whether you want a notification or not when Should I Sleep takes effect. This notification just states that the app is utilizing its sensors to determine if your computer actually should go to sleep at that moment or not.

• Moving your mouse pointer to a hot corner can put your Mac to sleep, depending on your Mission Control settings. Choose Apple menu > System Preferences, then click Mission Control. Click the Hot Corners button, then see if any of the corners are set to 'Put Display to Sleep.' • can put your Mac to sleep. Check your Energy Saver settings as described above, and be aware that your Mac won't automatically go to sleep unless it's inactive: • The same can also keep your Mac from sleeping. • Any app or other process that's running on your Mac could also be keeping your Mac awake.

Check the Energy Saver pane of to identify apps that need your Mac to be awake. If 'Yes' appears in the Preventing Sleep column for an app, your Mac won't automatically sleep while the app is running. Other apps prevent sleep only when doing certain things, such playing music or video, printing, or downloading files. If you started from on a Mac notebook, automatic sleep is disabled as long as the Mac is using AC power. Your Mac might wake for these activities: •. Examples of network activity include iTunes sharing, photo sharing, printer sharing, file sharing, and using Back to My Mac. • from FaceTime, Messages, and other apps and services.

To prevent Bluetooth devices from waking your Mac, choose Apple menu > System Preferences, then click Bluetooth. Click the Advanced Button, then deselect 'Allow Bluetooth devices to wake this computer.' If you have a MacBook Pro (2016 or later) or MacBook (Retina, 12-inch, 2017), note that these models are designed to start up when you. These additional steps may help identify or resolve the issue: •. • Disconnect external devices other than your Apple keyboard, mouse, and display.

If that resolves the issue, gradually reconnect your devices, testing each time, until you find the device that is interfering with sleep. Then check the documentation that came with the device, or contact the device manufacturer.

• Start up in to see if the issue is related to non-Apple startup items, login items, or kernel extensions. If you still see the issue,.

Say hello to Owly, a cute little fellow who lives in your Mac’s menu bar and does its best to prevent your Mac from automatically sleeping. What this means is that Owly ensures your Mac’s screen never goes dim, no screen savers appear and that your Mac doesn’t enter sleep mode. By right clicking the Owly icon on the menubar, the app can toggle on/off. When the icon is red, Owly is active and will keep your Mac wide awake. When the icon is black, the app is no longer actively ensuring your Mac doesn’t enter sleep.

Owly is useful for when you want to keep certain information showing on your screen whilst whilst you may not be using the keyboard/mouse actively. Some examples are: - Watching a video (non fullscreen mode) and you don’t want your Mac to sleep - If you are using your screen to view live updating stats - If you are downloading files and want to be able to monitor the status whilst you may be sat at a distance from your Mac To access Owly’s Preferences, simply click on the menubar icon. Owly can be customized as follows: - Set it to launch at login - The app can be made to appear in the dock - Adjust the duration for which you want Owly to be active - Toggle on/off a countdown timer on your menubar for how long Owly will remain active - Adjust the app to allow your Mac to sleep after a selected battery percentage threshold We've spent a great deal of time thinking about the details and after using this app for a few days, you'll begin to notice our small yet creative touches.