I have a MacBook Pro (16-inch, 2019), to which I connect two external monitors using the thunderbolt ports. I consistently run into this bug. any suggestions on how to get around it since there are no other ports to use?
Your MacBook Pro 16-in may simply be overheating, which causes it to retreat into a cooling-off loop inside kernel_task.
This computer was built with a ninth generation 14nm Intel processor. The only way to meet the target performance was to make it a six or eight core processor. This processor generates an enormous burst of heat when it does Turbo Boost, and there is only one cooling rail shared by both the CPU and GPU. So getting Either side too hot ramps up the fans.
This processor was supposed to be an eleventh-generation 7nm processor, but intel is three years late, and is only starting to ship its tenth generation 10nm processors now.
Apple DID redesign the cooling system for this specific Mac. New, high-efficiency fans are used. But for some uses, that is still not enough.
Some of the best advice is to install Turbo Boost Switcher and turn off CPU Turbo Boost. This reduces the huge sudden overheating brought on by Turbo Boost, that simply does not translate into real-world performance gains.
For external displays, changing away from HDMI to DisplayPort family (or to DisplayPort over ThunderBolt or USB-C) will reduce the Voltages and slightly reduce the heat generated. It is a good thing to do, but it may not be enough to solve this issue by itself.
How to fix your 16-in MacBook Pro (Don’t return it!)
Your MacBook Pro 16-in may simply be overheating, which causes it to retreat into a cooling-off loop inside kernel_task.
This computer was built with a ninth generation 14nm Intel processor. The only way to meet the target performance was to make it a six or eight core processor. This processor generates an enormous burst of heat when it does Turbo Boost, and there is only one cooling rail shared by both the CPU and GPU. So getting Either side too hot ramps up the fans.
This processor was supposed to be an eleventh-generation 7nm processor, but intel is three years late, and is only starting to ship its tenth generation 10nm processors now.
Apple DID redesign the cooling system for this specific Mac. New, high-efficiency fans are used. But for some uses, that is still not enough.
Some of the best advice is to install Turbo Boost Switcher and turn off CPU Turbo Boost. This reduces the huge sudden overheating brought on by Turbo Boost, that simply does not translate into real-world performance gains.
For external displays, changing away from HDMI to DisplayPort family (or to DisplayPort over ThunderBolt or USB-C) will reduce the Voltages and slightly reduce the heat generated. It is a good thing to do, but it may not be enough to solve this issue by itself.
How to fix your 16-in MacBook Pro (Don’t return it!)
have you done an SMC reset? You should. Several times if no response.
How to reset the SMC of your Mac - Apple Support
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Sounds like bad video dongles.
I think one of the Bug is coming from connected to external monitor.
When I copying a 6TB folders, before other some apps opened like Safari, Mail, the CPUs are in normal, but when I used them, with graphic intensive work, it will trigger all CPUs overload.
after I turned off my external monitor, it become normal again...
Anyone have same problem?
How did you decide it is "using most or all cores continuously"?
Activity monitor shows 80% of cpu being used by kernel_task even when I’m not running anything. Once I unplug the monitors the utilization goes down.
Activity Monitor 80 percent says 80 percent of ONE CPU.
Those numbers can go way over 100 percent of a CPU to indicate multiples.
I only have 1 CPU (2.3 GHz 8-Core Intel Core i9). when I bring up the CPU window with the utilization of each core, I see that all of the cores are being heavily used (~80%).
My MBP changed the motherboard and the kernel task still here after 2 weeks used. I think there are some bugs inside macOS Big Sur. I tried re-install macOS over 5 times, same.....
MacOS Bug: Kernel task uses most or all CPU Cores continuously.
