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Some macOS 12.2 Users Experiencing Bluetooth-Related Battery Drain Issue During Sleep Mode

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Apple released macOS Monterey 12.2 earlier this week, and some Mac users who have installed the software update are experiencing excessive battery drain during sleep mode, seemingly due to Bluetooth accessories frequently waking the computers.

macOS-Monterey-on-MBP-Feature.jpg

The issue has been reported by users across the MacRumors Forums, Reddit, and Twitter over the last several days, but it is unclear how widespread it is.

Affected users say their Mac's battery life drops from 100% to 0% while in sleep mode overnight since updating to macOS 12.2. A few users tried to identify a cause in Terminal and found that Bluetooth accessories are frequently causing a "DarkWake from Deep Idle" that results in the Mac repeatedly waking from sleep, which drains the battery. The issue appears to be affecting both Intel-based Macs and M1-based Macs.


Users report that the issue ceases when Bluetooth is disabled or when all Bluetooth accessories are disconnected from the Mac, but this is not an ideal solution.

Apple seeded the first beta of macOS 12.3 earlier this week, but it is not immediately clear if that version fixes the issue. We have reached out to Apple for comment on the matter and will provide an update if we hear back.

Article Link: Some macOS 12.2 Users Experiencing Bluetooth-Related Battery Drain Issue During Sleep Mode
 
Article Link
https://www.macrumors.com/2022/01/30/macos-12-2-bluetooth-battery-drain/
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I haven't experienced this myself (still on macOS 11.6.2), but does un-checking System Preferences -> Bluetooth -> Advanced -> "Allow Bluetooth devices to wake this computer" solve the issue?

Most issues related to Bluetooth and sleep seem to get fixed by turning off that option, at the cost of your Bluetooth mouse/keyboard not being able to wake up your Mac.
 
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It’s been occurring since Monterey.

Ever since Monty was installed the unit will crash while in sleep and wake up to it booting and it saying it crashed due to a problem etc.

Put it in sleep mode and battery will be 10% after 2 days from 100%.

Keep device is off and Bluetooth is turned off completely etc.

Monty was trash.

The same unit with just Big Sur didn’t have the issues.

No program changes and no usage changes.

Lol Monty is a battery decimate just like watch Os 8 and especially 8.4
 
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nimalouk said:
No!!! The issue was also on macOS 12.1! I thought macOS 12.2 would finally fix it, but it didn’t! But the exact same issue is for me since I have macOS Monterey (installed when macOS 12.1 was released). Also my external Monitor turns on sometimes. MacBook Pro 15-inch 2018. I also looked up everything in Terminal, same issue.
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The only thing that wakes my iMac Pro with 12.1 and 12.2 is when Do not Disturb turns off or on.
 
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Monterey is such an unbelievably huge hunk of garbage. I keep waiting for a major release that fixes all of the bugs I have with it (on my $4k laptop no less) and it just keeps getting worse. But at least we have a host of idiotic new features that Apple can advertise to the short attention span crowd. Glad I have a notification center I can't turn off while the stability of my incredibly expensive premium flagship computer is just ruined
 
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csalm87 said:
The only thing that wakes my iMac Pro with 12.1 and 12.2 is when Do not Disturb turns off or on.
Click to expand...
I'm waiting to see how this all goes on 12.2 before I update my iMac Pro from Catalina to 12.2 . I saw earlier version were bricking some iMac pros . How is your iMac pro doing otherwise from the Do not disturb feature issue ?
 
Reason077 said:
I haven't experienced this myself (still on macOS 11.6.2), but does un-checking System Preferences -> Bluetooth -> Advanced -> "Allow Bluetooth devices to wake this computer" solve the issue?

Most issues related to Bluetooth and sleep seem to get fixed by turning off that option, at the cost of your Bluetooth mouse/keyboard not being able to wake up your Mac.
Click to expand...
That option is no longer available in Monterey.
 
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Clearly why when I put my mac to sleep since the update it wakes back each time. I thought maybe it was waking for my NAS but wake for network activity being off didn't help.

Setup:
16 inch 2019 MBP
2.4 GHz i9
CalDigit TS3 Plus Dock
Two external monitors
Apple TouchID Keyboard (Bluetooth)
Logitech MX 3 Master mouse (Using Bluetooth, not RF)
 
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It also appears to be Wi-Fi. Turn off Wi-Fi before sleeping your machine and see how much you’ve lost half a day later. The every-minute DarkWake event logs in pmset -g log will also go away. In my case, I still see one every 15 minutes from an rtc timer (Power Nap probably), but sleep battery life is greatly improved vs leaving Wi-Fi on.

I actually did a tcpdump on the Wi-Fi AP my M1 Max MBP is connected to in order to see what was causing the Wi-Fi wakeups, and every time there was a DarkWake event in the log, it was because a 17.x.x.x IP address (Apple’s IP range) pinged my MBP. I assume it’s something iCloud related but not sure if it’s specifically Find My or what it is. Nonetheless disabling Wi-Fi before sleep stopped this behavior, obviously. I left Bluetooth enabled since it didn’t seem to be causing the issue for me.

Not really an ideal workaround, but it’s something until Apple gets it together. For the more technically inclined, one can automate Wi-Fi on/off using a utility called sleepwatcher. Short tutorial here.
 
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Stratus Fear said:
It isn’t Bluetooth, it’s Wi-Fi. Turn off Wi-Fi before sleeping your machine and see how much you’ve lost half a day later. The every-minute DarkWake event logs in pmset -g log will also go away. In my case, I still see one every 15 minutes from an rtc timer (Power Nap probably), but sleep battery life is greatly improved vs leaving Wi-Fi on.
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For me it is definitely bluetooth. On my iMac I have WLAN disabled all the time, as I am using ethernet. After updating to 12.2 I had dark wakes every minute. After switching off my bluetooth Keyboard and Magic Mouse, this issue is gone. But for sure, this is no long term solution.
 
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Alwis said:
For me it is definitely bluetooth. On my iMac I have WLAN disabled all the time, as I am using ethernet. After updating to 12.2 I had dark wakes every minute. After switching off my bluetooth Keyboard and Magic Mouse, this issue is gone. But for sure, this is no long term solution.
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That’s what I get for assuming everyone uses Wi-Fi. But it brings an interesting thought; Macs have been using combo Wi-Fi/Bluetooth adapters for a while. Must be something wrong with how they’re handling device activity waking the system at all, not Wi-Fi or Bluetooth specific. The machine definitely shouldn’t be waking for passive, connection keep-alive style traffic.
 
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macOS 12.2 is working well for me but clearly there's still some big issues. This release has seemed like bug, after bug. I just want a stable OS on my 14" Pro. That shouldn't be too much to ask.
 
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