MacBooks Are Experiencing Battery Drain in Sleep Mode
MBP, installed the update while plugged into power, rebooted the MBP no apps were left running and I closed the lid. I unplugged the MBP the battery was 100% and went to bed,” one MacRumors forum member wrote.
“When I woke up and opened the MBP lid it would not wake from sleep. I didn’t know what was wrong at the moment so I plugged the MBP back into power and tried to get it to wake up. The chime sounded it woke up and showed 1% battery. It went from 100% to 1% overnight with the lid closed and nothing running.”It’s not clear when the apparent bug wiggled its way into Apple’s desktop OS, but some users say issues arose in earlier versions of macOS.
The leading theory for what’s causing the problem is that Bluetooth devices are waking these Macs from sleep, though it’s not clearthat might be happening. Users tried finding the cause and discovered in Terminal that Bluetooth accessories are causing “DarkWake from Deep Idle,” resulting in Macs that repeatedly wake from sleep.
If it isn’t already, Apple should soon become aware of this issue and will hopefully work to quickly release a patch. Until then, you might think twice about updating your MacBook, and if you’re already experiencing problems, try disabling Bluetooth before you turn in for the night.
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