Is there a way to control the CPU fan speed in Ubuntu 20.04? I am using an older Dell Desktop.

  • It’s a Desktop computer, mid-tower. I will check the BIOS settings for a setup variable.
    – Bruce1369
    Oct 27, 2020 at 21:46
  • Run sensors-detect, if it has pwm controllable fans, you should see something detected in the SuperIO section.
    – rtaft
    Oct 27, 2020 at 22:00
  • My system does not have PWM controlled fans, so there is no way to control the fans in my old system. Thanks for the help!
    – Bruce1369
    Oct 29, 2020 at 3:09
  • Yea, it needs to have a 4pin connector on the fan to be able to control it.
    – rtaft
    Oct 29, 2020 at 13:01
  • 3
    Does this answer your question? How to control fan speed?
    – Nmath
    Nov 7, 2020 at 1:07


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