如何改变Mac上的睡眠时间

Mastering Your Mac's Sleep Mode: A Comprehensive Guide

Apple's Sleep Mode conserves energy and reduces wear on your Mac, automatically activating after a period of inactivity. However, you can easily customize this behavior to suit your needs, instantly putting your Mac to sleep for battery conservation or privacy, or extending its wake time for uninterrupted downloads or music playback.

Manually Putting Your Mac to Sleep

Saving time and minimizing wear and tear, putting your Mac to sleep instead of shutting down is highly recommended. Here's how:

1. Access the Apple menu and select "Sleep."
2. Press the power button and click "Sleep."
3. On portable Macs, simply close the lid.

For Macs with infrared receivers, use an Apple Remote:

• Sleep: Press and hold the Play/Pause button for five seconds.
• Wake: Press any button on the remote.

Customizing Your Mac's Sleep Settings

Adjust your Mac's automatic sleep timer (1 minute to 3 hours) or disable sleep entirely via these steps:

1. Click the Apple icon (top-left).
2. Select "System Preferences."
3. Choose "Battery."

Battery Tab:

1. Use the "Turn display off after" slider to set the display sleep timer (1 minute to 3 hours, or never).
2. Configure additional settings:
   • "Slightly dim the display when on battery power" (energy saving).
   • "Enable Power Nap while on battery power" (for tasks like email checks; disable for maximum battery life).

Power Adapter Tab:

1. Use the "Turn display off after" slider to set the display sleep timer (1 minute to 3 hours, or never).
2. Configure additional settings:
   • "Prevent computer from sleeping automatically when the display is off" (keep Mac awake with lid closed).
   • "Wake for network access" (wake on Wi-Fi connection or app internet requests).
   • "Enable Power Nap while plugged into a power adapter" (for background tasks).

Scheduling Sleep Times

For precise sleep scheduling, follow these steps:

1. Click the Apple logo (top-left).
2. Select "System Preferences."
3. Open "Battery."
4. Click "Schedule."
5. Check "Sleep" and select the desired day(s) and time.
6. Click "OK."

Using Terminal for Sleep Timers

To set a sleep timer (or shutdown/restart) using Terminal (Applications > Utilities > Terminal):

Enter the command sudo pmset sleepnow, followed by a space, one of these modifiers (-h for shutdown, -r for restart, -s for sleep), another space, +, and the number of minutes. Press Return and enter your administrator password. For example: sudo pmset sleepnow -s +10 puts your Mac to sleep after 10 minutes.

Frequently Asked Questions

• Does a Mac sleep automatically? Yes, by default.
• How long until a Mac sleeps? Defaults to two minutes of inactivity, customizable from one minute to three hours.
• How to keep my Mac screen awake longer? Adjust the sleep settings as described above.
• Will my alarm sound if my Mac is asleep? No, unless you prevent sleep or use a third-party alarm app designed to keep the computer awake.

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