Herbie Murray
Many iMac users have reported issues with their device not going to sleep mode. This can be caused by a number of factors, including external peripherals, updates to the operating system, or other processes running in the background. In this article, we will explore the potential reasons why your iMac may not be going to sleep and provide solutions to fix the issue.
| Characteristics | Values |
|---|---|
| iMacs sometimes have issues with going to sleep mode | Yes |
| iMacs sometimes wake up immediately after going to sleep mode | Yes |
| Disconnecting external peripherals can help with sleep mode issues | Yes |
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What You'll Learn
How to fix an iMac that won't go to sleep
If your iMac won't go to sleep, there are a few things you can try. Firstly, check what processes are running on your Mac by opening your Mac's Activity Monitor, clicking on the Energy tab, and then the Preventing Sleep Column. This will show you what processes are preventing your iMac from sleeping. You can then try disconnecting any external peripherals one by one to see if this is causing the issue. If it is, you'll need to replace the damaged peripheral. Another suggestion is to turn on "Prevent automatic sleeping when the display is off" and only allow the display to turn off. Then shut down for long periods of non-use.
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How to make an iMac stay asleep
There are several reasons why your iMac may not be going to sleep. One simple solution is to disconnect external peripherals. Sometimes, issues with peripherals can cause this problem, so disconnecting them one by one can help you identify which one is causing the issue. After that, you need to replace the damaged peripheral.
Another solution is to turn on "Prevent automatic sleeping when the display is off" and only allow the display to turn off. Then shut down for long periods of non-use. If you are interested in what might be preventing your iMac from sleeping, open your Mac's Activity Monitor, click on the Energy tab, click on the Preventing Sleep Column, and look to see what Process is preventing computer sleep.
You can also use a diagnostic tool such as EtreCheck to display the important details of your system configuration. This will help you identify any issues that may be preventing your iMac from sleeping.
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How to prevent an iMac from sleeping
IMacs not going to sleep is a common problem. To prevent your iMac from sleeping, you can try the following:
- Go to System Settings > Battery. Scroll down and click Options. Turn on 'Prevent automatic sleeping on power adapter when the display is off'.
- Open System Preferences and select Energy Saver. In the Energy Saver panel, slide the 'Turn display off after' slider to 'Never' to permanently keep your Mac from sleeping. If you see a warning about your Mac using more energy, click 'OK'. Tick 'Prevent your Mac from automatically sleeping when the display is off'.
- Download Lungo, an app that prevents your Mac from sleeping for as long as you want.
- Disconnect external peripherals. Issues with peripherals connected can create this problem, so disconnect them one by one to ascertain which one is causing the issue.
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How to disconnect peripherals to make an iMac sleep
Sometimes, issues with peripherals connected to your iMac can cause it to not go to sleep. To disconnect peripherals to make your iMac sleep, follow these steps:
- Disconnect peripherals one by one: Start by disconnecting peripherals one by one to identify which one is causing the issue. This could include external hard drives, printers, scanners, or other devices connected to your iMac.
- Identify the problematic peripheral: Once you've disconnected a peripheral, try putting your iMac to sleep again. If it goes to sleep successfully, you've identified the problematic peripheral.
- Replace the damaged peripheral: If disconnecting a peripheral allows your iMac to sleep, it's likely that the peripheral is damaged or faulty. In this case, you'll need to replace it with a new one.
- Reconnect other peripherals: After resolving the issue, you can reconnect any other peripherals that were not causing the problem.
By following these steps, you can identify and resolve issues with peripherals that may be preventing your iMac from sleeping.
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How to use EtreCheck to fix an iMac that won't sleep
If your iMac won't go to sleep, there are a few things you can try. Firstly, you can try disconnecting any external peripherals one by one to see if one of them is causing the issue. If that doesn't work, you can try using EtreCheck, a free diagnostic tool that can help you identify and resolve any conflicts or problems with your Mac.
To use EtreCheck to fix an iMac that won't sleep, follow these steps:
- Download and install EtreCheck on your iMac.
- Run EtreCheck and select "Report" from the left-hand pane.
- When the report displays, click the "Share Report" icon from the EtreCheck toolbar.
- From the dropdown menu, select "Copy Report".
- Do not highlight any text in the report before using the "Copy Report" command, as this will garble the formatting and make the report harder to evaluate.
- Paste the report into an email or forum post to get help from other users or Apple Support.
By following these steps, you can use EtreCheck to identify and resolve any issues that may be preventing your iMac from sleeping properly.
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Frequently asked questions
This could be caused by peripherals, or by processes running in the background.
Open your Mac's Activity Monitor, click on the Energy tab, then click on the Preventing Sleep Column.
Disconnect them one by one, to see which one is causing the issue.
Replace the damaged peripheral.
Turn on "Prevent automatic sleeping when display is off" and only allow the display to turn off.
