MacBook Air M4 immediately wakes after going to sleep in clamshell mode – USB/HID/Bluetooth?

Question

MacBook Air M4 immediately wakes after going to sleep in clamshell mode – USB/HID/Bluetooth?

Hi,

I’m trying to find the cause of a very strange sleep/wake problem with my MacBook Air M4.

Setup

MacBook Air M4 15.3"
macOS 26.6
Lenovo ThinkVision T27QD-4v external monitor
MacBook connected to the monitor with one USB-C cable
Monitor’s USB hub is used for Logitech peripherals
Logitech MX Master 3S
Logitech MX Keys S
Both Logitech devices are currently connected through one Logitech Bolt receiver plugged into the monitor’s USB-A hub
No external USB audio adapter currently connected

Problem

When the MacBook is in clamshell mode and I choose Apple menu → Sleep, it sometimes goes black for about one second and then immediately wakes again.

It is intermittent: sometimes it sleeps normally, sometimes it wakes immediately.

I have already ruled out some simple causes:

With the Logitech Bolt receiver completely disconnected, the MacBook reliably went to sleep several times when opened and using the built-in trackpad.
Bluetooth-only operation also worked when the MacBook was open.
However, in clamshell mode, using the Bluetooth MX Master to initiate sleep could again result in an immediate wake.
I therefore disabled the Bluetooth wake setting experimentally, but the problem did not disappear completely.
I then connected both Logitech devices back to the same Bolt receiver. The problem is still intermittent.
The USB audio adapter has also been removed for the current tests.

I also created a keyboard shortcut (Option + Command + R) to trigger sleep, so the mouse itself is not necessarily involved in initiating sleep.

Relevant system information

pmset -g custom shows normal sleep settings (sleep 1, hibernatemode 3, etc.).

pmset -g assertions previously showed Bluetooth/HID activity and the monitor's USB hub.

Most interestingly, the wake logs show two different wake paths:

Bluetooth:

Wake from Deep Idle ... due to ... bluetooth-pcie/HID Activity

and, after switching back to the Bolt receiver:

USB:

Wake from Deep Idle ... due to ... USB2_wake ... /UserActivity Assertion

There are also repeated entries such as:

DarkWake to FullWake ... due to HID Activity

So it appears that both Bluetooth HID and USB HID activity can be involved, although I cannot determine which physical device is actually generating the wake event.

Question

Does anyone know how to identify the exact device or subsystem responsible for these wake events?

Could this be a macOS 26.x / Apple Silicon / clamshell issue involving HID devices, a USB-C monitor hub, or external input devices?

I am particularly interested in a way to identify the actual wake source from the macOS logs, rather than doing dozens of trial-and-error tests.

Thanks!

MacBook Air 15″, macOS 26.6

Gepostet am 24. Sept. 2026 16:40

Antworten

Answer 1

24. Sept. 2026 20:21 als Antwort auf All_Ein_Sein

Those wake reasons already narrow it down quite a bit.

`bluetooth-pcie/HID Activity` points to input activity coming through Bluetooth, while `USB2_wake ... /UserActivity` points to the USB path. The limitation is that `pmset` usually shows the wake path or controller, not necessarily the specific mouse or keyboard behind a hub or receiver.

I’d test the monitor’s USB hub next. Disconnect the USB data connection to the ThinkVision completely, then test clamshell sleep with the Bolt receiver connected directly to the Mac, if possible. After that, try Bluetooth again with the monitor’s USB hub still out of the setup.

If the problem stops when the hub is bypassed, that would strongly point to the monitor/USB hub path. If Bluetooth-only still causes `HID Activity` wakes with the hub completely disconnected, you may actually have more than one wake source.

Based on those logs alone, I wouldn’t assume this is a macOS 26.x bug yet.

A friendly note: This is the German-language Apple Support Community. Posting your question in German will make it easier for more members to understand it and offer assistance.

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Answer 2

25. Sept. 2026 13:18 als Antwort auf PreCognition

Thanks again to everyone who took the time to reply and suggest different things.

I have now tried quite a lot: disabling Bluetooth wake, disabling Power Nap, removing the Logitech Bolt receiver, quitting Logi Options+, and checking various settings and wake logs. The problem still occurs intermittently.

To be honest, I don't want to spend any more hours trying to track this down. 😄

So I'm going to solve it differently: I'll simply leave the MacBook running in clamshell mode and switch off the external monitor using its physical power button whenever I don't need it.

When the Mac is idle, macOS naturally reduces its activity considerably, so the power consumption of an otherwise idle MacBook should be fairly low. The exact consumption would of course have to be measured.

I'm fine with that. Maybe a future macOS update will eventually fix whatever is causing the issue. For now, I'm considering this case closed.

Thanks again to everyone who tried to help!

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