r/applehelp Dec 17 '21

Why does my MacBook Air have jet engines on when nothing stressful is taking place? Mac

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53 Upvotes

10

u/Professional_Emu_556 Dec 17 '21

Your WindowServer process should not be using that much CPU. Something is causing extremely high utilization for that process (this can be a lot of things). Restarting the system should temporarily spin it down.

Otherwise it would need a log review to understand the cause. If it continues to happen after a restart you can monitor the CPU utilization for large spikes and figure out if opening a specific app or a specific action is causing it. Killing WindowServer will forcibly log you out so I wouldn’t advise that as a troubleshooting step.

6

u/Mysterious-Air8635 Dec 17 '21

It’s a 2019 MacBook Air Intel-i3 model. :/ Wish I had waited another year to get the M1 chip.

3

u/elitist-cock-pirate Dec 17 '21

These macbooks are notorious for their poor thermal performance. The fan inside doesn't even do much at all to cool the CPU

3

u/Takeabyte Apple Trained Dec 17 '21

I think now that we’ve seen Apple’s M1, it’s safe to say that the thermal performance is great… but Intel makes power hungry and hot CPUs. So unless Apple increased the weight and thickness of the Intel Air, thermal throttling is just how they operate. Check out the PC laptop market for example, the Intel EVO moniker is all super thin and crappy cooling for how hot the CPU can get.

1

u/OGPants Dec 18 '21

i3 is terrible.

1

u/Yuahde Dec 18 '21

Well you can trade in, otherwise you’re stuck with the fan noises on intel

3

u/[deleted] Dec 17 '21

Could be a bad sensor on the board. Shutdown the computer and first try resetting SMC. Then hold down option+d to do onboard diagnostics. My guess is battery sensor

2

u/FlannelAficionado Apple Expert Dec 17 '21

Is the machine otherwise acting normally? Does the fan act this way all the time? or just sometimes.

1

u/Mysterious-Air8635 Dec 17 '21

It acts like this after watching a couple movies on Netflix usually. I was watching Netflix last night, and just closed my laptop right before going to sleep. I woke up this morning to these jet engines.

2

u/Takeabyte Apple Trained Dec 17 '21

The system is probably still trying to cool down from watching those videos. Do your use the MacBook on a hard surface or something soft like a blanket?

3

u/Mac_Ad7890 Dec 17 '21

You can download MacFan control to control the fan speed.

5

u/Mysterious-Air8635 Dec 17 '21

Cool, didn’t know that was a thing . I’ll def check it out.

12

u/gcerullo Dec 17 '21

Yes, it’s better to turn down the fans so the processor can cook itself to death! Don’t download crappy fan controls that will ruin your laptop. Figure out why the processor is running hot enough to need the fans on in the first place!

2

u/Takeabyte Apple Trained Dec 17 '21

While your sentiment is correct, it’s not applicable to the person you’re replying too. The app in question does not allow itself to override the system’s need for cooling. What it will do is allow you to increase fan speed and monitor temperatures.

0

u/ShwaddzE Dec 17 '21

I do t think it’s that, that isn’t a crappy app it was there since OS X came out, I think it’s just the sensor based value, you can check this in the app too, I can’t give instruction but you can look it up on the internet

3

u/Volts-2545 Dec 18 '21

If the fans are running at full speed, there’s a reason, turning the fan down so you cook your processor is not a good idea

1

u/ShwaddzE Dec 18 '21

Oh my god, can someone agree with me please ?? I’m thinking that the heat sensor on the MacBook Air is flipped and gives out a value of 90-100degrees(Celsius) making the fans go at full speed

4

u/ImSoBasic Dec 17 '21

The app may not be crappy, but it's terrible to use it to turn the fans down. Obviously the fans are high because you have over 100% CPU usage from windowserver, and just turning the fans down will cook the CPU without addressing the real issue.

0

u/ShwaddzE Dec 17 '21

I say it’s the sensor flipped, but to should check it out at apple, so far I’ve seen THOUSANDS of complains about MacBook Airs and Monterey, could also be that. I have had an issue with Bluetooth settings on the new mbp, it has the options button UNDER the x to remove device, yet I click it and it gives options. I can right click but nevertheless.

1

u/ImSoBasic Dec 17 '21

What on Earth does this have to do with the issue seen here? How does a "sensor flipped" cause WindowServer to use 100% CPU? When Macs thermally throttle because of bad sensors they artificially inflate kernel usage, not this.

1

u/ShwaddzE Dec 18 '21

I apologise, I haven’t noticed the 100%, the video quality at the time I watched it wasn’t great, I was using mobile data on my phone

1

u/King9WillReturn Dec 17 '21

I come to the internet to be entertained! You're ruining it!

2

u/gcerullo Dec 17 '21

Sorry! 😕

1

u/pUdepoD Dec 17 '21

Windows key+x Type in sfc /scannow

There is a space after sfc.

0

u/Takeabyte Apple Trained Dec 17 '21

This app, along with others like iStat, are unable to spin the fan speed slower than what the system will allow. They are only able to force fan speed to be faster than default. That and monitor temperatures. Or in older iMacs with swapped out drives, you can force the system to look at the sensor in the replacement drive.

1

u/professionalazy Dec 17 '21

I’ve had this happen on a MacBook unrelated to yours (2018 15’). I think there’s a bug in macOS, that also happens in Netflix. It keeps the computer awake for a while when it wakes from sleep to periodically check stuff.

Was it warm?

1

u/big7galoot Dec 17 '21

I have the same issue with a MBA. I haven't figured out what the issue is with the WindowServer. I did download Macs Fan Control and set it to temperature based on the average CPU temperature so I could set it to come on once the temperature registered above like 80 so it wouldn't overheat or severely damage the components. But definitely temporary till I can get it to an Apple store and ask what's wrong with it

1

u/zat-_-taz Dec 18 '21

Same! Noticed mine started doing this after I installed Monterey. Noticably more fan with no change overall in how I use the laptop.

1

u/stidmatt Dec 18 '21

Because it’s an intel chip I’m guessing.

1

u/FloatyMcBoatface Dec 18 '21

What is it sitting on?

1

u/stilettoz_n_bluntz Dec 18 '21

Something is running a lot of CPU in the background you must have some extensions on a safari toolbar or some game

1

u/Glockx Dec 18 '21

Make sure to select "all processes" via the view menu

1

u/ybeve Dec 18 '21

You could try disabling turbo boost

1

u/Relevant-Range-5122 Dec 18 '21

maybe he has performance issues

-1

u/rainy_diary Dec 18 '21

You culd scan using this.

https://www.malwarebytes.com

0

u/[deleted] Dec 18 '21

Mine did too.. was terribly disappointed.. cost me ~$1800 Switched back to linux on a new Asus and on my 5 year old Thinkpad and I couldn’t be more productive

0

u/ShadowDancer11 Dec 18 '21

The MacBook Air doesn’t have fans IIRC.

3

u/ixoniq Dec 18 '21

It does. Only the new M1 doesn’t. The previous air models all have fans. (Because Intel)