Following the release of macOS Monterey 12.2 last month, some Mac users who installed the software update started to experience excessive battery drain during sleep mode, seemingly due to Bluetooth accessories frequently waking up the machines. The issue appears to affect Macs running the first beta of macOS 12.3 as well.
Many affected users found their Mac’s battery life dropped from 100% to 0% while in sleep mode overnight. A few users tried to identify a cause in Terminal and found that Bluetooth accessories were frequently causing a “DarkWake from Deep Idle” that resulted in the Mac repeatedly waking from sleep and draining the battery’s charge.
Fortunately, it appears that the second beta of macOS 12.3 seeded today may resolve the issue. In a tweet, Mr. Macintosh said his 2018 MacBook Pro that was experiencing the issue on the first beta of macOS 12.3 is no longer affected on the second beta.
From what I can see, macOS Monterey 12.3 Beta 2 (21E5206e) fixes the Bluetooth battery drain issue.
I tested 3 times & didn’t see a single DarkWake 👍
Test setup:
1. 2018 MBPro that had the issue on 12.3 B1
2. 12.3 Beta 2 and can’t reproduce the issuehttps://t.co/XVKe0oGYtW pic.twitter.com/23g6HuPPel
— Mr. Macintosh (@ClassicII_MrMac) February 8, 2022
macOS 12.3 will likely be publicly released around March or April, providing a fix for all affected users. In the meantime, users can disable Bluetooth on their Mac or disconnect all Bluetooth accessories overnight to prevent battery drain.
Related Stories
Some macOS 12.2 Users Experiencing Bluetooth-Related Battery Drain Issue During Sleep Mode
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. 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…
Apple Seeds Second Beta of macOS Monterey 12.2 to Developers [Update: Public Beta Available]
Apple today seeded the second beta of an upcoming macOS Monterey 12.2 update to developers for testing purposes, with the new software coming three weeks after the first beta and a month after the release of macOS Monterey 12.1. Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be available through the…
Apple Seeds macOS Monterey 12.2 Release Candidate to Developers [Update: Public Beta Available]
Apple today seeded the release candidate version of an upcoming macOS Monterey 12.2 update to developers for testing purposes, with the new software coming one week the second beta and more than a month after the release of macOS Monterey 12.1. Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be…
Apple Seeds Second macOS Monterey 12.3 Beta to Developers
Apple today seeded the second beta of an upcoming macOS macOS Monterey 12.3 update to developers for testing purposes, with the new software coming two weeks after the release of the first macOS Monterey 12.3 beta. Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be available through the Software Update…
Apple Seeds First Public Beta of macOS Monterey With Universal Control
Apple today seeded the first beta of an upcoming macOS Monterey 12.3 update to its public beta testing group, with the new software coming one day after it was provided to developers. Public beta testers can download the macOS 12.3 Monterey update from the Software Update section of the System Preferences app after installing the proper profile from Apple’s beta software website….
Apple Seeds First Beta of macOS Monterey 12.3 to Developers
Apple today seeded the first beta of an upcoming macOS Monterey 12.3 update to developers for testing purposes, with the new software coming just a day after the release of macOS Monterey 12.2. Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be available through the Software Update mechanism in System…
Apple Seeds First Beta of macOS Monterey 12.2 to Developers
Apple today seeded the first beta of an upcoming macOS Monterey 12.2 update to developers for testing purposes, with the new software coming shortly after the release of macOS Monterey 12.1. Registered developers can download the beta through the Apple Developer Center and after the appropriate profile is installed, betas will be available through the Software Update mechanism in System…
Apple Releases macOS Monterey 12.2 With Safari Vulnerability Fix
Apple today released macOS Monterey 12.2, the second major update to the macOS Monterey update that launched in October. macOS Monterey 12.2 comes over a month after the release of the 12.1 update, which brought SharePlay support. The macOS Monterey 12.2 update can be downloaded on all eligible Macs using the Software Update section of System Preferences. Apple has also…
Popular Stories
Gurman: Apple Event on March 8, At Least Four M2 Macs to Launch Later This Year
In his Power On newsletter today, Bloomberg’s Mark Gurman reiterated that Apple is planning to hold a virtual event on Tuesday, March 8 to introduce new iPhone SE and iPad Air models, which are both expected to feature an A15 chip and 5G support. Subscribe to the MacRumors YouTube channel for more videos. Gurman said Apple also plans to launch at least one new Mac this spring, but it’s…
Top Stories: March 8 Apple Event, New iMac Pro Rumors, Universal Control vs. Sidecar, and More
Things are definitely starting to heat up as we head toward Apple’s first media event of 2022, and it looks like we may now have a date! We should be getting a few product introductions at the event, but there’s lots more coming later in the year. Also this week, we took a closer look at the new Universal Control feature that’s in beta right now, comparing it to the existing Sidecar feature…
MacBook Pro With Next-Gen M2 Chip Coming Next Month, Supply Chain Report Claims
Apple will launch its first MacBook Pro featuring a second-generation M2 Apple silicon processor at its spring event next month, according to a new supply chain report today. DigiTimes reports that Apple’s supply chain partners kept production lines running during the Lunar New Year holiday for the new MacBook Pro, which is set to launch in “early March,” according to the publication’s…
Technology to Embed Face ID into MacBook Displays ‘Doesn’t Exist,’ Says Gurman
Apple’s first Mac with Face ID is unlikely to be a MacBook because the technology necessary to embed the authentication hardware into a thin notebook display still doesn’t exist, according to well-connected Bloomberg journalist Mark Gurman. Gurman’s latest thoughts on the subject appeared in the Q&A section of his latest “Power On” newsletter. On whether Face ID will ever come to the Mac,…
