MBP (15-inch, 2016) overheating

ronaldcastillo

macrumors 6502a
Original poster
Oct 25, 2009
619
36
I've been going to Starbucks this past week to get work done. I notice for the 2nd time, when I got home my MBP is really hot when I grab it from my bag. My sleeve in my bag is warm and today when I got home, the fans were running. The last thing I had opened before I closed it was Safari. I have power nap off on battery. Anyone know why? I just got my top case/display replaced 2 weeks ago from the popping noise (& haven't heard it since).
 

ronaldcastillo

macrumors 6502a
Original poster
Oct 25, 2009
619
36
Did you notice if it had gone to sleep when you stowed it in your bag?
I should've checked. If I close it, does it normally go to sleep or do I have to make it go to sleep before closing? What's weird is how the fans was running when Safari/Mail were the only apps open.
 

conifer

macrumors regular
Oct 30, 2014
139
34
open activity monitor, sometimes it shows a runaway process or webpage. I've had bad webpages use up battery.
 
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Five_Oh

macrumors regular
Jan 7, 2017
230
201
Flyover Country, USA
I should've checked. If I close it, does it normally go to sleep or do I have to make it go to sleep before closing? What's weird is how the fans was running when Safari/Mail were the only apps open.
It normally goes to sleep. I just wonder if your new repair disrupted that for some reason. It sounds to me your Mac was not asleep and had no airflow in your bag, causing it to overheat.
 

macdudesir

macrumors 6502
Jan 16, 2011
357
76
Blacksburg, VA
Open up Activity monitor and go to the energy tab and see if there are any apps that say "Preventing Sleep." This is not necessarily the cause, but it may be a place to start. The reason it was hot with just those apps is because it was not asleep and there was no airflow. It *should* go to sleep when you close the lid...
 

ronaldcastillo

macrumors 6502a
Original poster
Oct 25, 2009
619
36
My MBP is still overheating. I went ahead and screen shot the energy tab right when opening my MBP. It's really warm when it overheats when I grab it out of my bag. It doesn't happen all the time I bring it out, but it does happen often.

 

leman

macrumors G3
Oct 14, 2008
9,963
4,550
Sometimes it fails to go to sleep (as other mentioned) and putting a working laptop into an isolating sleeve without any air circulation is generally a very bad idea. It most likely sleeps eventually (or otherwise it would perform an emergency shutdown and you'd see a message about it) but since the sleeve prevents it from cooling down, it will stay rather warm for long periods of time.

Make sure it sleeps properly before staving it away (no fan noise etc.) and you should be fine.
 

jerryk

macrumors 601
Nov 3, 2011
4,840
2,397
SF Bay Area
My MBP is still overheating. I went ahead and screen shot the energy tab right when opening my MBP. It's really warm when it overheats when I grab it out of my bag. It doesn't happen all the time I bring it out, but it does happen often.

CPU tab screenshot would be useful. Sort the % CPU column in inverse order (highest to lowest percentage).
 
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