您的Mac的屏幕保护程序是否无法正常启动？还是会导致黑屏或图像渲染不正确？有几个原因（例如冲突的设置和有问题的系统软件）通常会导致屏幕保护程序无法在Mac上启动或工作。
按照下面的故障排除提示来解决您的MacBook Pro、MacBook Air、i Mac或Mac mini 上与屏幕保护程序相关的问题。
1.检查屏幕保护程序设置
最好先检查Mac上的屏幕保护程序设置并确保一切设置正确。您可以通过系统(System) 偏好设置(Preferences)应用程序来做到这一点。
1. 打开Apple菜单并选择系统偏好设置( System Preferences)。
2. 选择标有桌面和屏幕保护程序(Desktop & Screen Saver)的类别。
3. 切换到屏幕保护程序(Screen Saver)选项卡。
4. 确保选中Show screen saver after( Show screen saver after)旁边的框，并且在下拉菜单中指定了正确的空闲时间（以分钟为单位）。然后，确认在侧边栏中选择了正确的屏幕保护程序。
重要提示：(Important: )对于可自定义的屏幕保护程序，您可能需要选择图像源 — 选择源(Source )>选择文件夹( Choose Folder)/照片库(Photo Library)。如果没有，屏幕保护程序默认显示颜色而不是图像。
5. 仔细检查屏幕保护程序(Screen Saver)选项卡中的其余选项——使用随机屏幕保护程序(Use random screen saver)、带时钟显示(Show with clock)和热角(Hot Corners)——并根据需要进行任何调整。然后，退出System Preferences。
2.检查电源设置
接下来，检查Mac上的电源设置。在屏幕保护程序有机会出现之前，您必须确保显示器未设置为进入睡眠状态。
1. 打开系统偏好设置(System Preferences)应用程序。
2. 选择电池(Battery)（MacBook Pro 和 MacBook Air）或节能器(Energy Saver)（iMac 和 Mac mini）。
3. 深入了解电池(Battery)和电源适配器(Power Adapter )侧标签（MacBook Pro和MacBook Air）或电源(Power)侧标签（iMac 和Mac mini）。Turn display off after下的持续时间必须长于Mac上的屏幕保护程序计时器。
例如，如果屏幕保护程序设置为在五分钟后显示，则显示器睡眠定时器必须比此时间长。
3. 退出阻止Mac进入睡眠状态的进程
特定活动（例如在Safari和QuickTime 中观看视频）会阻止(QuickTime—prevent)您的Mac显示屏幕保护程序或关闭其显示。但是，任务背后的进程很少会出错并无限期地继续运行。识别导致问题的有问题程序的最佳方法是使用活动监视器(using the Activity Monitor)。
1. 打开Launchpad并选择其他(Other)>活动监视器(Activity Monitor)。
2. 打开活动监视器的视图(View)菜单并选择列(Columns)>防止睡眠(Preventing Sleep)。
3. 您现在将在活动监视器中看到一个标有“(Activity Monitor)防止睡眠( Preventing Sleep)”的新列。找到任何标(Locate)有 Yes(Yes)的进程。
4.如果您可以关闭相关程序或停用防止Mac休眠的设置，请执行此操作。如果没有，请突出显示该项目并选择屏幕顶部的停止按钮。(Stop)然后，选择退出(Quit)。
如果您无法正常退出进程，请使用Force-Quit选项。(Force-Quit)了解在 Mac 上强制退出程序的其他方法(additional ways to force-quit programs on Mac)。
4. 重启你的 Mac
您是否尝试过重新启动Mac？这应该可以快速解决阻止屏幕保护程序正常工作的任何小技术故障。
保存您的工作并在Apple菜单上选择重新启动。(Restart)为获得最佳效果，请在再次选择重新启动之前在确认弹出窗口中取消选中重新(Restart)登录时重新打开窗口(Reopen windows when logging back in)。
5. 将 macOS 更新到最新(Latest)版本
有缺陷的系统软件是阻止屏幕保护程序在(Buggy)Mac上启动或正常工作的主要原因。例如，macOS Monterey的初始版本存在一个已知问题，即阻止可自定义的屏幕保护程序从照片库加载图像。然而，随后的点更新——macOS 12.1 Monterey——解决(Monterey—fixed)了这个问题。
因此，无论您当前的 macOS 版本如何（无论是Mojave、Catalina还是Big Sur），一旦有待处理的点更新可用，就必须尽快安装它们。它可能会永久解决问题。
1. 打开系统偏好设置(System Preferences)应用程序。
2. 选择软件更新(Software Update)。
3. 选择立即更新(Update Now)。或者，选择更多信息(More info)以阅读更新说明。然后，选择立即安装( Install Now)。
6. 重置 NVRAM
NVRAM（也称为PRAM ）保存与多个系统关键 macOS 设置相关的信息——日期和时间、启动驱动器、显示分辨率等。如果屏幕保护程序错误仍然存在，NVRAM重置可能有助于修复它。
注意：(Note:)您只能在运行Intel芯片组的Mac上重置(Macs)NVRAM 。如果您使用的是Apple (App)le Silicon Mac，请继续进行下一个修复。(le Silicon Mac, move on to the next fix.)
1. 关闭你的 Mac。
2. 按下电源(Power)按钮并立即同时按住Command、Option、P和R键。
3. 当您再次听到启动铃声时松开按键。如果您的Mac包含Apple T2 安全芯片，请在(Apple T2 Security Chip)Apple标志再次出现后松开按键。
此外，重置 Mac 的SMC（系统管理控制器）可能会对屏幕保护程序相关问题产生积极影响。有关全面的分步说明，请查看我们在 Mac 上重置 SMC 和 NVRAM(resetting the SMC and NVRAM on Mac)的指南。
7.清除Mac的缓存
如果上述修复均无效，则必须清除 Mac 的应用程序和系统缓存(clear the Mac’s application and system caches)。最快的方法是安装和使用 Onyx(installing and using Onyx)。以下是使用它删除 Mac 缓存的简要概述。
1. 下载并安装Onyx。确保获得与Mac上的 macOS 安装相匹配的版本。
2. 打开Onyx并为其提供文件和文件夹(Files and Folders)以及全盘访问权限(Full Disk Access)。
3. 选择维护(Maintenance)选项卡。保持屏幕中的默认选择不变，然后选择Run Tasks。
您的Mac将自动重启。Onyx完成清除缓存后，macOS 一开始可能会感觉很慢。但随着您继续使用它，它会加快速度。
Mac 上的屏幕保护程序已修复
尽管屏幕技术已经发展到与使用屏幕保护程序的最初目的无关的地步，但在Mac(Mac)空闲时显示您最喜欢的图像或动画确实有助于提升用户体验。我们希望上述修复可以帮助您让屏幕保护程序开始显示或像往常一样再次工作。
Screensaver Not Starting or Working on Mac? 7 Ways to Fix
Is your Mac’s screensaver failing to start as uѕual? Оr does it result in a black scrеen or render images incorrеctly? Several reasons—such as conflictіng settings and buggy system software—often result in the screensaver not ѕtarting or working on Mac.
Work your way through the troubleshooting tips below to fix screensaver-related issues on your MacBook Pro, MacBook Air, iMac, or Mac mini.
1. Check Screen Saver Settings
It’s a good idea to start by reviewing the screensaver settings on your Mac and ensuring everything is set up correctly. You can do that via the System Preferences app.
1. Open the Apple menu and select System Preferences.
2. Select the category labeled Desktop & Screen Saver.
3. Switch to the Screen Saver tab.
4. Make sure the box next to Show screen saver after is checked and that the correct idle time duration (in minutes) is specified on the drop-down menu. Then, confirm that the correct screensaver is chosen on the sidebar.
Important: For customizable screensavers, you may want to pick an image source—select Source > Choose Folder/Photo Library. If not, the screensaver defaults to displaying colors in place of images.
5. Double-check the remaining options within the Screen Saver tab—Use random screen saver, Show with clock, and Hot Corners—and make any adjustments if needed. Then, exit System Preferences.
2. Check Power Settings
Next up, check the power settings on your Mac. You must make sure that the display isn’t set to go to sleep before the screensaver has a chance of showing up.
1. Open the System Preferences app.
2. Select Battery (MacBook Pro and MacBook Air) or Energy Saver (iMac and Mac mini).
3. Dive into the Battery and Power Adapter side-tabs (MacBook Pro and MacBook Air) or the Power side-tab (iMac and Mac mini). The duration under Turn display off after must be longer than the screensaver timer on your Mac.
For example, if the screensaver is set to show up after five minutes, the display sleep timer must be longer than that.
3. Quit Processes Preventing Mac From Sleeping
Specific activities—such as watching videos in Safari and QuickTime—prevent your Mac from showing the screensaver or turning its display off. Rarely though, the process behind the task can bug out and continue to run indefinitely. The best way to identify the problematic program causing the issue involves using the Activity Monitor.
1. Open the Launchpad and select Other > Activity Monitor.
2. Open the Activity Monitor’s View menu and select Columns > Preventing Sleep.
3. You’ll now see a new column labeled Preventing Sleep in the Activity Monitor. Locate any processes labeled Yes.
4. If you can close the related program or deactivate the setting preventing your Mac from sleeping, do it. If not, highlight the item and select the Stop button at the top of the screen. Then, choose Quit.
Use the Force-Quit option if you can’t quit the process normally. Learn about additional ways to force-quit programs on Mac.
4. Restart Your Mac
Have you tried restarting your Mac? That should quickly resolve any minor technical glitches preventing the screensaver from working correctly.
Save your work and select Restart on the Apple menu. For best results, uncheck Reopen windows when logging back in on the confirmation pop-up before selecting Restart again.
5. Update macOS to the Latest Version
Buggy system software is a major reason preventing the screensaver from starting or working correctly on Mac. For example, the initial release of macOS Monterey had a known issue that stopped customizable screensavers from loading images from the photo library. However, the subsequent point update—macOS 12.1 Monterey—fixed the problem.
So regardless of your current macOS version (be it Mojave, Catalina, or Big Sur), it’s crucial to install any pending point updates as soon as they become available. It just might permanently resolve the issue.
1. Open the System Preferences app.
2. Select Software Update.
3. Select Update Now. Or, select More info to read the update notes. Then, select Install Now.
6. Reset the NVRAM
The NVRAM (otherwise known as the PRAM) holds information related to several system-critical macOS settings—date & time, startup drive, display resolution, etc. If the screen saver bug persists, an NVRAM reset may help fix it.
Note: You can only reset the NVRAM on Macs running Intel chipsets. If you use an Apple Silicon Mac, move on to the next fix.
1. Turn off your Mac.
2. Press the Power button and immediately hold down the Command, Option, P, and R keys at the same time.
3. Release the keys when you hear the startup chime for a second time. If your Mac contains an Apple T2 Security Chip, release the keys after the Apple logo reappears for a second time.
Additionally, resetting the Mac’s SMC (system management controller) could yield positive results for screensaver-related issues. For comprehensive step-by-step instructions, check our guide to resetting the SMC and NVRAM on Mac.
7. Clear the Mac’s Cache
If none of the fixes above worked, you must clear the Mac’s application and system caches. The fastest way to do that requires installing and using Onyx. Here’s a brief overview of using it to delete your Mac’s cache.
1. Download and install Onyx. Make sure to get the version that matches the macOS installation on your Mac.
2. Open Onyx and provide it with permissions to Files and Folders and Full Disk Access.
3. Select the Maintenance tab. Leave the default selections within the screen untouched and select Run Tasks.
Your Mac will restart automatically. After Onyx finishes clearing the cache, macOS may feel slow initially. But it will pick up speed as you keep using it.
Screensaver on Mac Fixed
Although screen technology has advanced to the point that the original purpose of using a screensaver is irrelevant, having your favorite image or animation show up when your Mac is idle does help ramp up the user experience. We hope that the fixes above helped you get your screensaver to start showing up or working again as usual.
