1/13/2024 0 Comments Macs fanBut I am not sure this can work, because maybe fancontrol can only control PWM fans and somehow imac fans are not PWM. So I could simply make this settings file myself and set up a min speed of 200 RPM for the CPU fan. Pwmconfig is "just" a helper to create the fancontrol settings file. I also tried to install mbpfan: But it is meant for macbooks and not for imacs, with the result that only one sensor seems to be taken into account, then all fan speed are raised simultaneously, which is not helping in my case (see ) What I think could work but not sure how I tried to follow the steps described here: How to control fan speed?, so basically set up lm-sensors, then set up fancontrol with the help of pwmconfig But pwmconfig answers: There are no pwm-capable sensor modules installed Even after adding the module applesmc to /etc/modules and rebooting, no chance. This is annoying because I think with a fix speed set to 2000 RPM for example, the temp would stabilise at an acceptable temperature, hopefully below 90☌, while the noise would still be acceptable. This do lower the temp of these 2 sensors, until aournd 80☌, but this is not cool enough to reduce the fan speed. This fan gradually accelerate until its max, 3600 RPM, which makes the imac very loud. Here is a screenshot of psensor: psensor screenshotīasically, 2 sensors, TD0D and temp1 see an increase in temperature until reaching 105☌, which triggers the increase of the CPU fan speed. While it runs smoothly for all I need to do, 20 minutes after starting the CPU fan starts to get super loud. Here's another of those times when a spare arm (or an assistant) comes in handy! Keep holding down the four buttons for about 20 seconds, and you'll hear the "WALL-E" startup chime or see the Apple logo a couple of times.I switched an old Imac (2008) to Lubuntu. To reset the PRAM you need to hold down COMMAND and OPTION and P and R while powering on the system. Refit the battery and restart the Mac.Īlso: How to make your MacBook battery run all day Reset PRAM (Parameter RAM) Then press and hold down the power button for 5 seconds. Laptops with removable batteries (older MacBook systems): Disconnect the system from the power supply and remove the battery.Then simultaneously release all the buttons before starting the Mac normally. Laptops with non-removable batteries (newer MacBook systems): With the system plugged to a power supply, press and hold SHIFT and OPTION and CONTROL and then press the power button (it helps if you have three arms or an assistant).Desktop systems (iMac, Mac Pro): Disconnect the power cord, wait 15 seconds, plug it back in, and then wait a further 5 seconds before turning the Mac on again.If you see inaccuracies in our content, please report the mistake via this form. If we have made an error or published misleading information, we will correct or clarify the article. Our editors thoroughly review and fact-check every article to ensure that our content meets the highest standards. Our goal is to deliver the most accurate information and the most knowledgeable advice possible in order to help you make smarter buying decisions on tech gear and a wide array of products and services. ZDNET's editorial team writes on behalf of you, our reader. Indeed, we follow strict guidelines that ensure our editorial content is never influenced by advertisers. Neither ZDNET nor the author are compensated for these independent reviews. This helps support our work, but does not affect what we cover or how, and it does not affect the price you pay. When you click through from our site to a retailer and buy a product or service, we may earn affiliate commissions. And we pore over customer reviews to find out what matters to real people who already own and use the products and services we’re assessing. We gather data from the best available sources, including vendor and retailer listings as well as other relevant and independent reviews sites. ZDNET's recommendations are based on many hours of testing, research, and comparison shopping.
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