Sonoma 14 Mac book constant fan and overheating

I was having the same Sonoma problems with my 2018 MacBook Air. I did the Shut down keyboard process, and then disabled all auto-starts. Ends up for me, Chrome is what is causing the fan to come on. As soon as I open it, fan kicks on. Close it, it goes off. I have been a Chrome users for years, but luckily I pretty much only use my laptop for remote access into my company's systems to work. It's frustrating to have these fan issues each time we upgrade.

Cakinsley9 wrote:

I was having the same Sonoma problems with my 2018 MacBook Air. I did the Shut down keyboard process, and then disabled all auto-starts. Ends up for me, Chrome is what is causing the fan to come on. As soon as I open it, fan kicks on. Close it, it goes off. I have been a Chrome users for years, but luckily I pretty much only use my laptop for remote access into my company's systems to work. It's frustrating to have these fan issues each time we upgrade.

What the use of using Chrome on a MacBook, when Safari is made for it?

Chrome is a heavy energy eater in Linux and Windows too. If you need to use Google products, why not use them online on Safari and save the headache?

trialerror456 wrote:

I experienced this as well. Its so frustrating. My fan runs faster than usual.

If you are not using energy consuming heavy apps, when the fans are running wild, you better show your Mac to a service.

THANKS FOR YOUR HELP!

I ran etrecheck and identified the issues. Security software needed updating. Updated to latest IOS. Changed the moving screen saver to a static photo. Stopped all but essential apps from opening on login. So far my Mac is running cool and battery is holding its charge.

Mac Overheating Issue - Sonoma

My MacBook details:

MacBook Pro

13-inch, 2018, Four Thunderbolt 3 Ports

Processor 2.7 GHz Quad-Core Intel Core i7

Graphics Intel Iris Plus Graphics 655 1536 MB

Memory 16 GB 2133 MHz LPDDR3

macOS Sonoma 14.2.1

My Mac seems to have been overheating recently - running the battery down massively while in sleep mode, and being baking hot when both open, idling and in sleep.

Fans constantly blowing.

I found this thread on the issue and did many of the steps suggested by contributors.

This issue 'seems' now resolved. It still runs hot when doing tasks, but it always has (I'm not a fan of the touchpad as I'm sure that drains battery and uses needless power), but when idling and sleeping it cools down, and the fans don't fire up all the time as they were.

I used CleanMyMac to get rid of some login / start up items, and also did a clear out of junk and unused apps - still seemed to be happening.

I used Settings > General > Login Items to remove more, including Google LCC, and CleanMyMac's thing, Setapp from starting up

WorkSpaces I removed (haven't used it in ages)

Mosaic too

"Reset the SMC" by pressing Shift + Ctrl + Option + Power when device was off.

Things were still running hot so...

I also removed the following from login items and quit them:

DefaultFolderX

Flux

Can't remember what else but at least one other thing

MS updates and licence thing

I turned off the screen saver (I've never seen it anyway as I have my screen go off when it would run it) and changed wallpaper image to a downloaded static photo backdrop.

Which of these have caused the issue to be fixed... I don't know.

But it does seem to be better now.

Several people here seem to think the Wallpaper was causing them issues, so it may have been just that last one, or several things combined.

UPDATE:

Nope I was wrong. Still having issues.

It does generally seem to be better, cooler after the above changes, however...

I closed the lid (which should put it into sleep mode), put the MacBook into my backpack, and a couple of hours later when I took it out, the backpack was hot and the fans were going crazy.

Seemingly it wasn't going into sleep mode.

Not sure what to do now. I may try the downgrade of the OS as others have suggested but it'll be a few days before I can spend time sorting that out.

2019 iMac, core i5, 500gb SSD 16gb RAM.

Same. Upgraded to Sonoma (WHY, IT WAS WORKING JUST FINE????).

Now the fans are cutting in constantly, processor temps up in the 90s (celcius) and my Adobe apps are slow as F. Activating my second monitor makes things worse. I have the same refresh rate set.

Bug reports remain unresolved.

Going to back up and downgrade to Ventura when I have a spare hour.

I just updated my MacBook Pro, and now having issues. DID NOT have overheating issues and fans constantly running prior to update. Went from Sonoma 14.1 to 14.4, and now having issues. Don’t run anything heavy, and again was fine before update. Update caused my problem.

Immediately after an upgrade and for at least the next several hours of 'awake but not excessively busy' time, your Mac will be rebuilding the Spotlight index. This index of every word in every document is used to provide fast searches and also a quick reference of what files have recently changed, used to make Time machine run MUCH faster than otherwise possible.

After Spotlight search becomes available (indicating indexing is done) and your next Time Machine backup has completed, things should calm down.

When you use (or stop using) your Mac for more than a few minutes, if AC power is available, Plug it in!

Your Mac will NEVER over-charge.

Closing the lid REQUESTS (but does not guarantee) your Mac Sleeps.

For more predictable results, choose "Sleep" off the Apple menu.

I have fixed the issue for now.

I removed the screen from my iMac to upgrade the RAM and add a drive.

While I was in there I found the processor cooling fins to be thick with dust. I Hoovered them out then checked the case and sure enough, the vents at the bottom of the case were clear (I vacuum them regularly) but inside there is a plastic grille running the whole width of the case and it too was clogged with dust.

This is speculation on my part, but I'm guessing that Sonoma places a higher demand on your processor, and if your system was already maligned with cooling issues, then upgrading to Sonoma is the straw that breaks the camel's back.

Anyway, managed to get the screen off and on a couple of times without damaging it. Last week I laid it down to clean some adhesive tape off the back of the case and caught the corner of the screen on my work surface and cracked it :(

Still - at least it doesn't overheat anymore.

can you tell me the spec you have, because i have the same Mac (2019) but in Core-i9, doing noting my mac goes up-to 100 degree's when only watching youtube and a couple of tabs open on safari, i have nothing running in the background , so i am really confused on what the problem is.

Although I would usually recommend against update on older models, but I did noticed that my Adobe PS runs much smoother with the SONOMA 14.1.1 update.

Usually I would expect it to just add unless feature, and slow it down.

Here to echo a couple others... changed my wallpaper and screensaver to plain photos, not rotating images or motion pictures and the fan speed reduced immensely!! Common, Apple!!!!

Edit: solved it for about 5 min, now back to loud

Me too! Same thing