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hotdogcowboy

macrumors newbie
Original poster
Oct 18, 2021
23
24
I just opened up my 14" this morning it was warm to the touch. I closed the lid last night, while plugged in and at 100% charge. It should be sleeping, and the battery shouldn't be charging. I checked Activity Monitor and nothing says that it is preventing sleep. I expected this thing to be "off" and room-temperature when I picked it up, why was it warm?
 

KeniLF

macrumors newbie
Mar 28, 2020
28
25
I had mine sleeping for almost 13 hours and it's cool to the touch. I did not have the charger attached. I don't know the reason yours was warm although I wonder if you would see a different outcome by letting yours sleep overnight without charging.
 

Mistercharlie

macrumors regular
Nov 27, 2020
150
60
Power nap? The M1s don’t sleep like Intel Macs, as far as I know. They’re more like iOS devices, updating things even while they’re asleep.

My Mac mini had the same problem. I fixed it by disabling power nap. Now it sleeps properly. Try that.

 

hotdogcowboy

macrumors newbie
Original poster
Oct 18, 2021
23
24
Having now used it for an hour on battery it is much cooler than it was when I first picked it up. I'm thinking something funky is going on with power nap, sleep, and poorly written software. I had left both Steam and Fusion 360 running, and since shutting them down my battery estimate has doubled. Both apps were sitting completely idle in the background, yet they seemed to be using significant energy while both awake and sleeping...
 

yustas

macrumors 6502
Dec 11, 2009
489
377
Mine doesn't seem to get warm while sleeping, but it does get pretty warm to the right of the trackpad and in other places while watching Youtube TV and not doing anything else.

Is this normal?
 

madat42

macrumors 6502
Mar 25, 2011
326
128
This happened to me too - discovered it warm to the touch while plugged in and lid closed overnight. Upon waking it up from sleep the mouse worked for a while, stuttered and then the whole thing froze. Had to do a hard reboot, it's been fine ever since. I think this is a Monterey issue but unsure.
 

DougFNJ

macrumors 65816
Jan 22, 2008
1,485
1,212
NJ
If the MacBook Pro is brand new, it takes a couple days to index, once that process is done, things should settle down and it should be cool moving forward.
 
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Sanpete

macrumors 68040
Nov 17, 2016
3,695
1,665
Utah
Mine doesn't seem to get warm while sleeping, but it does get pretty warm to the right of the trackpad and in other places while watching Youtube TV and not doing anything else.

Is this normal?
A 14"? Not really. What are you watching Youtube on?
 

MacBird

macrumors 65816
Apr 1, 2010
1,315
1,714
I have a 16'' MBP M1 Max and it happened twice that it was quite warm in the morning despite being closed and in sleep mode. I checked processes and the culprit was "WindowServer". My best guess is that it is a Monterey bug and hope it will be fixed in a future update.
 

yustas

macrumors 6502
Dec 11, 2009
489
377
A 14"? Not really. What are you watching Youtube on?
14" M1 Pro, on Google Chrome.

One other thing, the battery life, Apple claims up to 17 hours. I don't get anything near that. Just watching Youtube or Netflix and not doing anything else, I get maybe 6 hours on the 80/20 charge/discharge routine.
 

Sanpete

macrumors 68040
Nov 17, 2016
3,695
1,665
Utah
Check in Activity Monitor > CPU while running Chrome to see if it's the Apple silicon or Intel version. If it's the Intel, that may be the problem.

Screen brightness is a large factor in battery use. Most testing is done at about halfway up on the slider, or less.
 

yustas

macrumors 6502
Dec 11, 2009
489
377
Check in Activity Monitor > CPU while running Chrome to see if it's the Apple silicon or Intel version. If it's the Intel, that may be the problem.

Screen brightness is a large factor in battery use. Most testing is done at about halfway up on the slider, or less.
Turns out Youtube TV now supports Safari, so no more Chrome.
 
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hotdogcowboy

macrumors newbie
Original poster
Oct 18, 2021
23
24
So this happened again. Or rather, it keeps happening. Just picked up my computer after it had been sleeping overnight and it was warm. Nothing in Activity Monitor was preventing sleep, but the ReportCrash process was pegged at 100% CPU. I wasn't running anything funky, mostly the Apple apps and nothing was running under Rosetta. No idea what crashed and I can't find the window the ReportCrash intended to spawn. Since opening the computer, it has cooled off considerably.

As far as I'm concerned these computers do not sleep reliably.
 

Sanpete

macrumors 68040
Nov 17, 2016
3,695
1,665
Utah
You can check Applications > Utilities > Console app to see if there's a crash report there.


The crash report process is a strong clue that it's software misbehaving. If you've got unusual software on there, it may not matter whether it's running, it may have affected other things already.

When you find it warm after sleeping, you can look at Activity Monitor > Energy and check the 12-hour tab to see if it shows whether anything else has been using much energy while it should be sleeping.
 

hotdogcowboy

macrumors newbie
Original poster
Oct 18, 2021
23
24
Obviously it is software misbehaving. Saying that "unusual software" may have "affected other things" is kind of a mysterious hand-wavy way to say that software can schedule wake-ups. It is just a shame that the whole raison d'être for Apple Silicon is power management, and they seemed to have fumbled the ball at the 99-yard line here. The chips sip power, but MacOS is a leaky bucket.
 

Sanpete

macrumors 68040
Nov 17, 2016
3,695
1,665
Utah
Software can do more than schedule wakes, it can alter settings that affect other software, causing things to not run well or crash. Most people aren't having the trouble you are, that's why I suggest you focus on the software you've added that others mostly haven't. Or you can focus on some general complaints about Apple, that might fix it.
 

hotdogcowboy

macrumors newbie
Original poster
Oct 18, 2021
23
24
Well, this keeps happening. Computer has been asleep all night and I pick it up and it is quite warm. Activity Monitor shows no apps preventing sleep. Looks like Steam is the likely culprit with at 8 points in the 12-hour energy column. How is any software able to use the CPU while the computer is ostensibly asleep? It seems like waking the computer kills whatever stalled process was chewing CPU.

Screen Shot 2022-01-23 at 10.16.44 AM.png
 
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