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I have seen the being asked since long time, but it still hasn't been addressed. I use DELL G3. My fans are completely unresponsive in Ubuntu (But they work well in Windows). When I try

sudo pwmconfig

I get :

# pwmconfig revision 6243 (2014-03-20)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.

We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.

/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

Any solutions to this?

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6
  • You haven't said which kernel stack you're using (Ubuntu LTS releases have two options; selected by installation ISO but can be changed anytime post-install); have you tried the other stack option? Use uname -r to see your kernel version; 4.15 for GA & you'll have 5.4 if using HWE (with newer support features)
    – guiverc
    Sep 7, 2021 at 7:26
  • Can you open a terminal and type mokutil --sb-state then update your question with the output please?
    – darth_epoxy
    Sep 7, 2021 at 10:22
  • @darth_epox the out is : SecureBoot enabled
    – Ballz
    Sep 7, 2021 at 17:28
  • @guiverc kernel version is '5.4.0-81-generic'
    – Ballz
    Sep 7, 2021 at 17:32
  • 1
    pwmconfig/fancontrol are for PWM fans, which most laptops don't have. There are ACPI based fan controllers and software, i8kutils, thinkfan, etc. Since it's a dell, try askubuntu.com/questions/1094485/…
    – rtaft
    Sep 23, 2021 at 13:58

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