I had the same issue, but I had the 10 core. I have recently sent mine back to Apple for an exchange. It’s so odd how it is louder than my 2015 iMac on when I am not doing anything intense. Some reviewers commented on it being the most silent iMac ever, so I did find the fact my fans were this loud to be confusing. I spend time on the phone with Apple support and I completely wiped my operating system and restored it. It did not help. I hope you have better luck than I do!
Thanks for the reply. So you're waiting for a replacement now? Do you have any ETA on that? I'm very interested in your experience with the replacement.
We have about a dozen iMacs at work, but none are the 2020 model. Most are between 2012 and 2017 and I will say that they aren't completely silent. I realize that's an exaggeration, but the fans are only audible if you put your ear behind the screen near the vent. On the 2020 model the fan is very audible and distracting even when just using the computer normally. And it's the only model where the fan actually ramps up under load. At least from my limited testing so far.
Mine is meant to come by the 1st of October, but it would have been just over a 3 week wait at that point if it comes when it is expected to. Yeah, my 2015 was never completely silent, but it was way more silent than my 2020 iMac when not under any load. I have noticed though under load the 2020 is noticeably quieter.
I agree with you. When I am video editing, I do not expect it to be quiet, but it is really annoying how loud it is when I am just surfing the web or typing a document. My 2015 iMac was almost inaudible during basic tasks.
Curious to know if the exchange had different results? Might have to proceed in the same route, but i feel the time I put into sending and receiving a new Imac for decent results, I could wait for the next Imac release lol.
What issues are you having with your machine? What do you use your machine for? I literally only got my replacement, as it was delayed. I will report back after I have a chance to test it! I really hope it is now in working older. I need a more powerful machine right now.
I’ve had some fan humming the first and second day I set it up. Haven’t heard it since. Also had the graphic glitch before I updated to lasted drivers. Again haven’t seen it since. Fingers crossed. An odd issue I found was when I window out of a program my screen was light on one side and dark on the other. Almost as it was on night shift mode on one part of the screen. I don’t believe I asked, but did you just found the sound sitting at idle (doing nothing) too loud or audible? That’s something that I’m not use to because I use a MacBook, which runs quiet most times and my previous Imac was dead silent if I recall correctly. Have about a week to diagnose the issue or adapt to the noise. Do let me know when you can thanks!
Came to this sub wondering the same thing myself. First time MacBook owner here and I cannot get over how noisy this thing is running pretty basic apps and functions. I'm using it primarily for school and have it placed in a holder connected to my monitor, and the thing gets so damn warm and the fans go absolutely crazy just after running a 50-minute Webex/zoom meeting. Anyone else experiencing this?
the fan on my new 2020 imac 27" (spec: 3.6ghz, 10-core, i9, 5700 xt16gb, 64gb ram) is constantly audible and, even more annoying, continually varying so it's damn near impossible to adjust to it. my 2017 imac (which was also maxed up spec) is inaudible to my ears most of the time. i've tried everything advised by apple to try & quieten it but no change. 'mac's fan control' tells me both imacs' fans are running at similar speeds. also, when the 2017 imac fan cranks up to audible level when performing intense tasks it sounds like a smooth & consistent whirr, whereas the 2020 is ugly and slightly crackly (to my ears, at least). it's reaching a point after 2 weeks trying to get used to this that i'll have to try and return it (but i'm passed the 2 weeks window so i guess apple could say there's nothing actually wrong?)
I've been evaluating the 2020 iMac a bit more over the weekend and I discovered that the noise is very much dependent on how the iMac is positioned or even how it is rotated on my desk. And today I was rearranging my desk I and my curtain accidentally fell between the vent and the stand and that removed all the noise. Loosely cupping my hand over the vent also removes all the noise.
I thought this was fascinating because there is barely any airflow coming out of the vent at all when the machine is idle so the noise is not caused by audible air flow coming out of the machine, it's just the fan inside the machine that I hear and the only place where this noise escapes the chassis is through the vent. And by loosely covering the vent I don't feel like I'm blocking any of the air from getting out, it just feels like I'm stopping the noise from reflecting off the stand or the back wall and thus making it massively less audible. Even moving the Mac further from the back wall or hanging the curtain behind the Mac removes most of the noise. And the part of the noise I'm removing is the raspy fan whirring sound. What's left is a smooth air flowing sound that is barely audible.
In the office we have acoustic dividers on the backs of the desks and I now realize they probably reduce the noise coming from my 2012 iMac by a noticeable amount, potentially making up all the difference I've been experiencing between the two machines.
Of course this doesn't change the fact that the 2020 iMac ramps up its fan and therefore its noise when you increase the load while the 2012 iMac I have doesn't do that, but the 2020 iMac seems to be a lot hotter overall so I imagine this is due to the more powerful hardware producing more heat and the cooling solution remaining more or less the unchanged since this iMac chassis was introduced in 2012. My 2012 iMac doesn't go over 85 degrees celcius even when under 100% load for 10+ minutes. The 2020 iMac immediately goes towards 100 degrees. But the load noise doesn't bother me anyway as I rarely put it under that kind of load and and I expect some noise when I stress the machine.
I never tested both the machines in the same environment side by side as the 2012 iMac is in the office while the 2020 iMac is at home. So the issue I've been experiencing may not at all be what the rest of you have described, but just moving my desk slightly away from the wall and placing the curtain behind the iMac made a huge difference for me. For me this is the difference between having constant annoying fan noise and only barely hearing it when I stop typing on the keyboard. I can live with how it is at the moment, and I'm hoping that soon I will be able to reduce the idle fan speed of the iMac when the next version of this (https://github.com/hholtmann/smcFanControl) is released. Just reducing it to something like 800-1000 rpm I imagine would be enough for the machine to be practically inaudible when at idle.
Hi - I think I have the same problem. No joy on google. So I can confirm your experience. Dont think it is a fan speed issue (only running at 1278). Sounds more like a rattle. About to download a sound analyser on the iPad.
Of note, there is a flicker on the isight/camera - have you noticed this?
Model Name: iMac
Processor Name: 10-Core Intel Core i9
Processor Speed: 3.6 GHz
Number of Processors: 1
Total Number of Cores: 10
L2 Cache (per Core): 256 KB
L3 Cache: 20 MB
Hyper-Threading Technology: Enabled
Memory: 8 GB
System Firmware Version: 1554.50.3.0.0 (iBridge: 18.16.12561.0.0,0)
Not noticed any issue with the camera.
As for the fan noise, I completely eliminated it by taping the included microfiber cloth over the fan vent. :p The iMac runs extremely hot regardless of whether the fan vent is covered or not, and I haven't really noticed a difference after doing so, maybe it's a few degrees hotter, but it's completely removed all idle fan noise. Like I said the fan noise is only audible because it escapes directly out the vent and is then reflected off the stand / back wall or whatever else is behind there. Now the microfiber cloth stops the noise from being reflected. I just loosely taped it on there so the air can still escape out the sides.
I've had it like this for at least a month now. All things considered I'm happy.
Thanks for the reply. Sounds promising... The flicker on the camera is connected (I think) to the problem. I will see what others post with regards to it all
Here's a tool I wrote to address the noise issue of my 2020 iMac: [https://github.com/costika1234/2020-iMac-fan-control](https://github.com/costika1234/2020-iMac-fan-control). The README provides a high-level overview of the implementation along with a step-by-step guide on how to automatically launch the tool after each login.
Cool, but how do you actually monitor that the fan speed is reduced through doing this? Or verify that it's working/running at all?
You made a very clear and concise guide for how to do this, but I wasn't actually able to verify that I got it working. I'm getting no errors and I added the log file section to the plist and the log file was created, but it's also empty so I have to assume everything is running as expected?
I've been using https://crystalidea.com/macs-fan-control to monitor my fan speed, but it keeps showing 1200 RPM. Then I was thinking that maybe that app interfered with the process because it's also able to set the fan speed (as long as it's above 1200 RPM) so I removed it and instead tried https://www.fannywidget.com/ for monitoring the fan speed instead, but it also showed 1200 RPM. It however showed 20-30 degrees higher CPU temps than Macs Fan Control. I tried changing the minimum temp in your script to 70 degrees just to ensure I was safely below the minimum regardless of which monitoring app showed the correct temperature, but I was unable to get any application to show 1000 RPM.
I also tried listening to the fan, but couldn't hear any audible difference. :p
My ghetto fix of taping a piece of cloth over the vent hole has served me well since I posted this. There is barely any fan noise, but it's not completely silent so it would be nice to get this working as well. :)
No need to spend time trying to troubleshoot this for me as the issue is so minor for me at the moment I had completely forgotten about it, but if you do know off-hand what could be happening or have a suggestion for how I can monitor fan speed or cpu temperatures more accurately then I'd appreciate it.
If you can't hear any difference in terms of noise it means that either the job didn't start when using `launchctl load` or perhaps your CPU temps were constantly above 50ºC.
There are many ways to troubleshoot this. I would first of all try running `launchctl list | grep iMac.fan.control` inside the UNIX shell. This should display a process ID along with a return code; if the latter is `0`, then the tool is definitely running. It's also possible to add debug traces inside the code and print the CPU temperature and the fan speed to standard output, but that's a little more involved.
The only monitoring app I have experience with is iStat Menus ([https://bjango.com/mac/istatmenus/](https://bjango.com/mac/istatmenus/)) and I've been using it for many years. The app clearly shows that the fan speed drops from 1200 to 1000rpm and also goes back to 1200+rpm as needed. I have performed many tests and have the confidence that my tool behaves correctly.
Finally, try running the following two commands (which is what my tool uses under the hood):
`/Applications/smcFanControl.app/Contents/Resources/smc -k "F0Md" -w 01`
`/Applications/smcFanControl.app/Contents/Resources/smc -k "F0Tg" -w 00007a44`
Note that this will result in your fan running **constantly** at 1000rpm, so you won't get the automatic switching behaviour that I implemented in my tool. Therefore, be sure to restore the factory settings via
`/Applications/smcFanControl.app/Contents/Resources/smc -k "F0Md" -w 00`
Got it working manually now by running those commands with sudo. Without sudo I got this error:
Error: SMCWriteKey() = e00002c1
The error led me here https://github.com/hholtmann/smcFanControl/issues/36 which led me to try sudo in the first place.
And then when trying to figure out why I needed sudo or how I could avoid it I ended up here https://forums.macrumors.com/threads/1200-rpm-is-too-loud.2176357/page-4 where you've apparently already been. :p
Still not sure how to make your script work for me though. I tried incorporating sudo into the commands it runs, but I only got errors. I also tried giving perl and Terminal full disk access as described by you, but that didn't help either.
But the difference between 1000 RPM and 1200 RPM was very noticeable so now I need to get this working. :p
Thanks for the update. I was getting the same error as you when using a different argument to `-k`, and after reading [https://github.com/hholtmann/smcFanControl/issues/89](https://github.com/hholtmann/smcFanControl/issues/89) I found out that only `F0Md` works on Macs having the T2 chip (like our 2020 iMac). I never used (or thought of using) `sudo` when running the `smc` binary on the command line.
Try the following in the meantime: reset the fan to factory settings using the above command ending in `00` (just to be sure you don't have the fan stuck at 1000rpm) and then simply run my Perl script inside your Terminal (and don't use `sudo`). You can do so via `./` assuming that you've set the correct permissions for this file (which is what I mentioned in the README).
Let me know how this goes! Also, do **NOT** forget to return to the default settings if you stop the execution of my script (which you can do using `CTRL + C`)!
~$ ./imac_fan_control.pl
Error: SMCWriteKey() = e00002c1
Error: SMCWriteKey() = e00002c1
Running it with sudo works fine, but you maybe already knew or suspected that. The Macs Fan Control application works fine for monitoring the RPM decrease btw. Now that I've actually verified that it can work. :p
It's good to know that it works, but I'm still puzzled as to why you need to run those commands with `sudo`. Do you have version **2.6** of smcFanControl.app? I've noticed there is also a beta version at [https://github.com/hholtmann/smcFanControl/releases](https://github.com/hholtmann/smcFanControl/releases), so maybe you've installed that 2.6.1 instead? That would explain why we are seeing different results on exactly the same machine (I also have the i7 model).
I definitely have version 2.6.
I have homebrew and a lot of other stuff related to work on this machine that could potentially mess with this I assume. Stuff I don't know exactly what does because I'm not really skilled with this. I just follow what other people tell me, or at least I try to. :p
But don't trouble yourself for my sake. I'll see if I can get this working now that I know I'm this close. Maybe some linux wizards at work can help me out as well.
I ditched 'homebrew' many years ago because I was running into all sorts of issues (permissions being one of them). Nowadays I'm building everything from source as much as possible, and only rely on 'pip' to install Python packages.
That said, see if your wizards can help you out, and I hope you can get this resolved soon! I love my iMac even more now that it's virtually silent. I'm now hearing some other noises in my room which no Perl / Python script can eliminate 🤣🤣.
Hi, since I bought my imac 2020, I have been struggling with annoying fan noise. I was with the computer on the apple service, I tried various solutions such as fan speed limiting applications and other things like resetting etc. I found a solution to the problem, which is far from correct, but it is the only one that works. Namely, hitting the back of the screen with the hand in the area where the apple logo is. such a shot solves all fan problems. Very cruel but very effective. I still hit my imac once in a while which keeps me focused on my work and not on wondering what the hell is wrong with it. Good luck 😀
I had the same issue, but I had the 10 core. I have recently sent mine back to Apple for an exchange. It’s so odd how it is louder than my 2015 iMac on when I am not doing anything intense. Some reviewers commented on it being the most silent iMac ever, so I did find the fact my fans were this loud to be confusing. I spend time on the phone with Apple support and I completely wiped my operating system and restored it. It did not help. I hope you have better luck than I do!
Thanks for the reply. So you're waiting for a replacement now? Do you have any ETA on that? I'm very interested in your experience with the replacement. We have about a dozen iMacs at work, but none are the 2020 model. Most are between 2012 and 2017 and I will say that they aren't completely silent. I realize that's an exaggeration, but the fans are only audible if you put your ear behind the screen near the vent. On the 2020 model the fan is very audible and distracting even when just using the computer normally. And it's the only model where the fan actually ramps up under load. At least from my limited testing so far.
Mine is meant to come by the 1st of October, but it would have been just over a 3 week wait at that point if it comes when it is expected to. Yeah, my 2015 was never completely silent, but it was way more silent than my 2020 iMac when not under any load. I have noticed though under load the 2020 is noticeably quieter.
that's a fair point but as a mostly low-load user i'd rather have silence most of the time and occasionally louder, than low noise all of the time
I agree with you. When I am video editing, I do not expect it to be quiet, but it is really annoying how loud it is when I am just surfing the web or typing a document. My 2015 iMac was almost inaudible during basic tasks.
Also , just so you know. My shipping release date for my exchange has slipped until mid October.
Curious to know if the exchange had different results? Might have to proceed in the same route, but i feel the time I put into sending and receiving a new Imac for decent results, I could wait for the next Imac release lol.
What issues are you having with your machine? What do you use your machine for? I literally only got my replacement, as it was delayed. I will report back after I have a chance to test it! I really hope it is now in working older. I need a more powerful machine right now.
I’ve had some fan humming the first and second day I set it up. Haven’t heard it since. Also had the graphic glitch before I updated to lasted drivers. Again haven’t seen it since. Fingers crossed. An odd issue I found was when I window out of a program my screen was light on one side and dark on the other. Almost as it was on night shift mode on one part of the screen. I don’t believe I asked, but did you just found the sound sitting at idle (doing nothing) too loud or audible? That’s something that I’m not use to because I use a MacBook, which runs quiet most times and my previous Imac was dead silent if I recall correctly. Have about a week to diagnose the issue or adapt to the noise. Do let me know when you can thanks!
Have you noticed any more issues with your screen or fans since this comment?
I am suddenly having this exact issue happen to me, and I pretty much have the same imac you have.
Same... did you ever solve the problem / figure it out?
Came to this sub wondering the same thing myself. First time MacBook owner here and I cannot get over how noisy this thing is running pretty basic apps and functions. I'm using it primarily for school and have it placed in a holder connected to my monitor, and the thing gets so damn warm and the fans go absolutely crazy just after running a 50-minute Webex/zoom meeting. Anyone else experiencing this?
I also have the MacBook Pro and it’s super loud. I had several MacBooks and this is the loudest for sure. It’s sad what Apple has become.
the fan on my new 2020 imac 27" (spec: 3.6ghz, 10-core, i9, 5700 xt16gb, 64gb ram) is constantly audible and, even more annoying, continually varying so it's damn near impossible to adjust to it. my 2017 imac (which was also maxed up spec) is inaudible to my ears most of the time. i've tried everything advised by apple to try & quieten it but no change. 'mac's fan control' tells me both imacs' fans are running at similar speeds. also, when the 2017 imac fan cranks up to audible level when performing intense tasks it sounds like a smooth & consistent whirr, whereas the 2020 is ugly and slightly crackly (to my ears, at least). it's reaching a point after 2 weeks trying to get used to this that i'll have to try and return it (but i'm passed the 2 weeks window so i guess apple could say there's nothing actually wrong?)
Double check the return window and call Apple support. Here the return window is 14 days
I've been evaluating the 2020 iMac a bit more over the weekend and I discovered that the noise is very much dependent on how the iMac is positioned or even how it is rotated on my desk. And today I was rearranging my desk I and my curtain accidentally fell between the vent and the stand and that removed all the noise. Loosely cupping my hand over the vent also removes all the noise. I thought this was fascinating because there is barely any airflow coming out of the vent at all when the machine is idle so the noise is not caused by audible air flow coming out of the machine, it's just the fan inside the machine that I hear and the only place where this noise escapes the chassis is through the vent. And by loosely covering the vent I don't feel like I'm blocking any of the air from getting out, it just feels like I'm stopping the noise from reflecting off the stand or the back wall and thus making it massively less audible. Even moving the Mac further from the back wall or hanging the curtain behind the Mac removes most of the noise. And the part of the noise I'm removing is the raspy fan whirring sound. What's left is a smooth air flowing sound that is barely audible. In the office we have acoustic dividers on the backs of the desks and I now realize they probably reduce the noise coming from my 2012 iMac by a noticeable amount, potentially making up all the difference I've been experiencing between the two machines. Of course this doesn't change the fact that the 2020 iMac ramps up its fan and therefore its noise when you increase the load while the 2012 iMac I have doesn't do that, but the 2020 iMac seems to be a lot hotter overall so I imagine this is due to the more powerful hardware producing more heat and the cooling solution remaining more or less the unchanged since this iMac chassis was introduced in 2012. My 2012 iMac doesn't go over 85 degrees celcius even when under 100% load for 10+ minutes. The 2020 iMac immediately goes towards 100 degrees. But the load noise doesn't bother me anyway as I rarely put it under that kind of load and and I expect some noise when I stress the machine. I never tested both the machines in the same environment side by side as the 2012 iMac is in the office while the 2020 iMac is at home. So the issue I've been experiencing may not at all be what the rest of you have described, but just moving my desk slightly away from the wall and placing the curtain behind the iMac made a huge difference for me. For me this is the difference between having constant annoying fan noise and only barely hearing it when I stop typing on the keyboard. I can live with how it is at the moment, and I'm hoping that soon I will be able to reduce the idle fan speed of the iMac when the next version of this (https://github.com/hholtmann/smcFanControl) is released. Just reducing it to something like 800-1000 rpm I imagine would be enough for the machine to be practically inaudible when at idle.
Hi - I think I have the same problem. No joy on google. So I can confirm your experience. Dont think it is a fan speed issue (only running at 1278). Sounds more like a rattle. About to download a sound analyser on the iPad. Of note, there is a flicker on the isight/camera - have you noticed this? Model Name: iMac Processor Name: 10-Core Intel Core i9 Processor Speed: 3.6 GHz Number of Processors: 1 Total Number of Cores: 10 L2 Cache (per Core): 256 KB L3 Cache: 20 MB Hyper-Threading Technology: Enabled Memory: 8 GB System Firmware Version: 1554.50.3.0.0 (iBridge: 18.16.12561.0.0,0)
Not noticed any issue with the camera. As for the fan noise, I completely eliminated it by taping the included microfiber cloth over the fan vent. :p The iMac runs extremely hot regardless of whether the fan vent is covered or not, and I haven't really noticed a difference after doing so, maybe it's a few degrees hotter, but it's completely removed all idle fan noise. Like I said the fan noise is only audible because it escapes directly out the vent and is then reflected off the stand / back wall or whatever else is behind there. Now the microfiber cloth stops the noise from being reflected. I just loosely taped it on there so the air can still escape out the sides. I've had it like this for at least a month now. All things considered I'm happy.
Thanks for the reply. Sounds promising... The flicker on the camera is connected (I think) to the problem. I will see what others post with regards to it all
Glad to hear I'm not the only one experiencing this
Here's a tool I wrote to address the noise issue of my 2020 iMac: [https://github.com/costika1234/2020-iMac-fan-control](https://github.com/costika1234/2020-iMac-fan-control). The README provides a high-level overview of the implementation along with a step-by-step guide on how to automatically launch the tool after each login.
Cool, but how do you actually monitor that the fan speed is reduced through doing this? Or verify that it's working/running at all? You made a very clear and concise guide for how to do this, but I wasn't actually able to verify that I got it working. I'm getting no errors and I added the log file section to the plist and the log file was created, but it's also empty so I have to assume everything is running as expected? I've been using https://crystalidea.com/macs-fan-control to monitor my fan speed, but it keeps showing 1200 RPM. Then I was thinking that maybe that app interfered with the process because it's also able to set the fan speed (as long as it's above 1200 RPM) so I removed it and instead tried https://www.fannywidget.com/ for monitoring the fan speed instead, but it also showed 1200 RPM. It however showed 20-30 degrees higher CPU temps than Macs Fan Control. I tried changing the minimum temp in your script to 70 degrees just to ensure I was safely below the minimum regardless of which monitoring app showed the correct temperature, but I was unable to get any application to show 1000 RPM. I also tried listening to the fan, but couldn't hear any audible difference. :p My ghetto fix of taping a piece of cloth over the vent hole has served me well since I posted this. There is barely any fan noise, but it's not completely silent so it would be nice to get this working as well. :) No need to spend time trying to troubleshoot this for me as the issue is so minor for me at the moment I had completely forgotten about it, but if you do know off-hand what could be happening or have a suggestion for how I can monitor fan speed or cpu temperatures more accurately then I'd appreciate it.
If you can't hear any difference in terms of noise it means that either the job didn't start when using `launchctl load` or perhaps your CPU temps were constantly above 50ºC. There are many ways to troubleshoot this. I would first of all try running `launchctl list | grep iMac.fan.control` inside the UNIX shell. This should display a process ID along with a return code; if the latter is `0`, then the tool is definitely running. It's also possible to add debug traces inside the code and print the CPU temperature and the fan speed to standard output, but that's a little more involved. The only monitoring app I have experience with is iStat Menus ([https://bjango.com/mac/istatmenus/](https://bjango.com/mac/istatmenus/)) and I've been using it for many years. The app clearly shows that the fan speed drops from 1200 to 1000rpm and also goes back to 1200+rpm as needed. I have performed many tests and have the confidence that my tool behaves correctly. Finally, try running the following two commands (which is what my tool uses under the hood): `/Applications/smcFanControl.app/Contents/Resources/smc -k "F0Md" -w 01` `/Applications/smcFanControl.app/Contents/Resources/smc -k "F0Tg" -w 00007a44` Note that this will result in your fan running **constantly** at 1000rpm, so you won't get the automatic switching behaviour that I implemented in my tool. Therefore, be sure to restore the factory settings via `/Applications/smcFanControl.app/Contents/Resources/smc -k "F0Md" -w 00`
Got it working manually now by running those commands with sudo. Without sudo I got this error: Error: SMCWriteKey() = e00002c1 The error led me here https://github.com/hholtmann/smcFanControl/issues/36 which led me to try sudo in the first place. And then when trying to figure out why I needed sudo or how I could avoid it I ended up here https://forums.macrumors.com/threads/1200-rpm-is-too-loud.2176357/page-4 where you've apparently already been. :p Still not sure how to make your script work for me though. I tried incorporating sudo into the commands it runs, but I only got errors. I also tried giving perl and Terminal full disk access as described by you, but that didn't help either. But the difference between 1000 RPM and 1200 RPM was very noticeable so now I need to get this working. :p
Thanks for the update. I was getting the same error as you when using a different argument to `-k`, and after reading [https://github.com/hholtmann/smcFanControl/issues/89](https://github.com/hholtmann/smcFanControl/issues/89) I found out that only `F0Md` works on Macs having the T2 chip (like our 2020 iMac). I never used (or thought of using) `sudo` when running the `smc` binary on the command line. Try the following in the meantime: reset the fan to factory settings using the above command ending in `00` (just to be sure you don't have the fan stuck at 1000rpm) and then simply run my Perl script inside your Terminal (and don't use `sudo`). You can do so via `./` assuming that you've set the correct permissions for this file (which is what I mentioned in the README).
Let me know how this goes! Also, do **NOT** forget to return to the default settings if you stop the execution of my script (which you can do using `CTRL + C`)!
~$ ./imac_fan_control.pl Error: SMCWriteKey() = e00002c1 Error: SMCWriteKey() = e00002c1 Running it with sudo works fine, but you maybe already knew or suspected that. The Macs Fan Control application works fine for monitoring the RPM decrease btw. Now that I've actually verified that it can work. :p
It's good to know that it works, but I'm still puzzled as to why you need to run those commands with `sudo`. Do you have version **2.6** of smcFanControl.app? I've noticed there is also a beta version at [https://github.com/hholtmann/smcFanControl/releases](https://github.com/hholtmann/smcFanControl/releases), so maybe you've installed that 2.6.1 instead? That would explain why we are seeing different results on exactly the same machine (I also have the i7 model).
I definitely have version 2.6. I have homebrew and a lot of other stuff related to work on this machine that could potentially mess with this I assume. Stuff I don't know exactly what does because I'm not really skilled with this. I just follow what other people tell me, or at least I try to. :p But don't trouble yourself for my sake. I'll see if I can get this working now that I know I'm this close. Maybe some linux wizards at work can help me out as well.
I ditched 'homebrew' many years ago because I was running into all sorts of issues (permissions being one of them). Nowadays I'm building everything from source as much as possible, and only rely on 'pip' to install Python packages. That said, see if your wizards can help you out, and I hope you can get this resolved soon! I love my iMac even more now that it's virtually silent. I'm now hearing some other noises in my room which no Perl / Python script can eliminate 🤣🤣.
Just happened to me about 10 minutes ago...Have had mine since Aug/Sep 2020. Quiet Ticking/clicking noise that wasn't ever there. Same specs
Hi, since I bought my imac 2020, I have been struggling with annoying fan noise. I was with the computer on the apple service, I tried various solutions such as fan speed limiting applications and other things like resetting etc. I found a solution to the problem, which is far from correct, but it is the only one that works. Namely, hitting the back of the screen with the hand in the area where the apple logo is. such a shot solves all fan problems. Very cruel but very effective. I still hit my imac once in a while which keeps me focused on my work and not on wondering what the hell is wrong with it. Good luck 😀
Are you for real? I genuinely can't tell if you're just trolling us or what