MacBook Battery drains quickly post Sonoma update

I downloaded Sonoma 14.3 to my Macbook Pro about a week or so ago. Ever since then, my battery life has dropped dramatically.

I'll usually only be using my podcast app and chrome, and for some reason this has been draining my battery very quickly. In about an hour and a half, my battery when from 100% to 38%.

Other times, I'll close my Macbook when I step away from it for a while, and and the battery life will be somewhere in the 30% range. When I get back to my Macbook, about two hours later, it will be hot and the battery will be completely drained, even though it had been asleep.

I've also acquired the problem of having to press the power button to wake my Macbook back up even if it's only been asleep for about 10 minutes.

And the fan will blow a lot.

These problems only began after I downloaded Sonoma 14.3.

I've checked my battery health, and it says the battery health is normal.

I have the battery set to low power mode when the macbook is on battery.

I've checked my activity monitor and it says the only things running during this time are Chrome, the podcast app, and the activity monitor.

I've cleaned out the fan.

Has anyone else had this problem?


[Re-Titled by Moderator]

Posted on Feb 2, 2024 6:37 AM

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118 replies

May 5, 2024 7:51 AM in response to HormyAJP

HormyAJP wrote:

Hello all,

I've been busying myself away for a while trying to debug the issue and/or find a cure for the issue.

TL;DR; QUICK "SOLUTION" 

Open a Terminal and type 

sudo pmset -a hibernatemode 25
...

Wow, thank you, HormyAJP!


I've been trying to avoid the problem by logging out before putting my MBP to sleep at night, but that didn't reliably do the job either. I suspect you're right about this being a race condition in the Sonoma kernel.


I'm going to take your suggestion and leave my hibernatemode at 3 until I next repro the problem, at which time I'll bring up Feedback Assistant (in Applications/Utilities) and try to capture and submit a report.


I may also try looking at the various pmset log outputs, just to see if anything stands out.


...and then I'll try hibernatemode 25, in order to live with the problem while waiting/hoping for Apple to finally notice/acknowledge/fix this extraordinarily annoying bug!

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MacBook Battery drains quickly post Sonoma update

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