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Hi,
My 13-inch 2018 MacBook Air is running Sonoma 14.5. I'm not sure when it started, but for several months now, it won't go to sleep when I close the lid. The fan runs constantly. I've followed all of the normal instructions to make it sleep, but nothing has worked. I've just managed to reduce the use of energy a bit by shutting things down in the Activity Monitor. I have the Power Nap turned off, Wake up to access the network is turned off.
Sorry for the delay getting back here.
Are you required to use the Trusteer anti-virus software for work or school? If not, then I would suggest uninstalling it by following the developer's instructions. Anti-virus apps, cleaning/optimizer apps, and third party security software are not needed on a Mac, plus these types of apps usually cause more problems than they solve since they interfere with the normal operation of macOS.
I notice that you may be running a bit low on memory which could possibly be causing the Mac to work a bit harder and performing some extra memory management as well which could be causing macOS to work a bit harder & prevent sleep.
When putting the laptop to sleep, make sure to disconnect all external devices prior to initiating sleep or power off especially if you plan to take the laptop elsewhere. Connecting or disconnecting devices can wake or power on a laptop. Even pressing any key on the keyboard or even touching the Trackpad can also wake & power on a laptop.
Try putting the laptop to sleep by choosing "Sleep" from the Apple menu instead of closing the Clamshell Lid. I suggest pressing the Caps Lock key so the Caps Lock LED is lit so when the laptop enters sleep the Caps Lock LED should go out. Does this make any difference?
Sorry for the delay getting back here.
Are you required to use the Trusteer anti-virus software for work or school? If not, then I would suggest uninstalling it by following the developer's instructions. Anti-virus apps, cleaning/optimizer apps, and third party security software are not needed on a Mac, plus these types of apps usually cause more problems than they solve since they interfere with the normal operation of macOS.
I notice that you may be running a bit low on memory which could possibly be causing the Mac to work a bit harder and performing some extra memory management as well which could be causing macOS to work a bit harder & prevent sleep.
When putting the laptop to sleep, make sure to disconnect all external devices prior to initiating sleep or power off especially if you plan to take the laptop elsewhere. Connecting or disconnecting devices can wake or power on a laptop. Even pressing any key on the keyboard or even touching the Trackpad can also wake & power on a laptop.
Try putting the laptop to sleep by choosing "Sleep" from the Apple menu instead of closing the Clamshell Lid. I suggest pressing the Caps Lock key so the Caps Lock LED is lit so when the laptop enters sleep the Caps Lock LED should go out. Does this make any difference?
cawelch wrote:
I turned off the screen saver and disconnected an external HD before closing the lid. In fact, the fan stopped running and it seems to have slept. But it does seem one shouldn't have to disconnected everything for the Sleep function to work.
I completely agree. It is related to Apple's decision to power on/wake the system when connecting devices since it is so difficult to power on/wake a computer by pressing the power button. When a device is disconnected, it can trigger a similar change in state to the Mac which causes the system to power on/wake. I'm not sure anyone at Apple is actually using their own products in any serious manner since I cannot see how anyone would want so many of these "features" forced onto them.
You can provide Apple with product feedback here:
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Will do, HW! Thanks again for your attention. Yesterday, I tried two techniques that are mentioned in another thread about the same problem with Sonoma. I turned off the screen saver and disconnected an external HD before closing the lid. In fact, the fan stopped running and it seems to have slept. But it does seem one shouldn't have to disconnected everything for the Sleep function to work.
No problem, HW! I appreciate the suggestions and will follow through on them.
Disconnecting the external HD has generally resolved the sleep issue; I'll let you know how the additional measures you suggest help.
Try resetting the SMC, updating macOS, and checking Energy Saver settings. Also, review Activity Monitor for apps preventing sleep and consider booting in Safe Mode. If the problem persists, contacting Apple Support might be necessary.
Hi HW,
I'll write to complain...I noticed lots of Monterey and Sonoma users already did the same. In the meantime, I'll attach
the EtreCheck report.
Run the third party app EtreCheck and post the full report here so we can examine it for clues.
Why won't my MacBook Air Model A1932 go to sleep?
