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Compute Module • Re: CM5 IO Board PWM Fan Not Locking / Randomly Stopping (pwm_fan, Bookworm, Kernel 6.12.34)

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when posting my PWM fan overlay on the forum for the first time Back in 2023 I've added a note that some smaller fans may require higher PWM values to start viewtopic.php?p=2122676&hilit=fan+overlay#p2122676

I've adjusted the first point of the fan curve to a value that made all of them happy.
That's exactly what the overrides are good for; adjusting the parameter to match
a) your HW
b) thermal requirements

simply add them If the defaults do not work for you.

Statistics: Posted by aBUGSworstnightmare — Wed Nov 12, 2025 5:58 am



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