[Tony@overlord ~]$ sudo pwmconfig
# pwmconfig version 3.6.0+git
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.

Found the following devices:
   hwmon0 is nvme
   hwmon1 is amdgpu
   hwmon2 is k10temp
   hwmon3 is nct6687
   hwmon4 is hidpp_battery_0

Found the following PWM controls:
   hwmon3/pwm1           current value: 255
   hwmon3/pwm2           current value: 255
   hwmon3/pwm3           current value: 255
   hwmon3/pwm4           current value: 255
   hwmon3/pwm5           current value: 255
   hwmon3/pwm6           current value: 255
   hwmon3/pwm7           current value: 255
   hwmon3/pwm8           current value: 255

Giving the fans some time to reach full speed...
Found the following fan sensors:
   hwmon3/fan1_input     current speed: 918 RPM
   hwmon3/fan2_input     current speed: 0 ... skipping!
   hwmon3/fan3_input     current speed: 0 ... skipping!
   hwmon3/fan4_input     current speed: 0 ... skipping!
   hwmon3/fan5_input     current speed: 0 ... skipping!
   hwmon3/fan6_input     current speed: 586 RPM
   hwmon3/fan7_input     current speed: 0 ... skipping!
   hwmon3/fan8_input     current speed: 0 ... skipping!

Warning!!! This program will stop your fans, one at a time,
for approximately 5 seconds each!!!
This may cause your processor temperature to rise!!!
If you do not want to do this hit control-C now!!!
Hit return to continue: