pwmconfig

# pwmconfig version 3.6.0
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 AC
   hwmon1 is BAT0
   hwmon2 is coretemp
   hwmon3 is ucsi_source_psy_USBC000:001
   hwmon4 is ucsi_source_psy_USBC000:002
   hwmon5 is ucsi_source_psy_USBC000:003
   hwmon6 is dell_smm

Found the following PWM controls:
   hwmon6/pwm1           current value: 0
   hwmon6/pwm2           current value: 0

Giving the fans some time to reach full speed...
Found the following fan sensors:
   hwmon6/fan1_input     current speed: 0 ... skipping!
   hwmon6/fan2_input     current speed: 0 ... skipping!

There are no working fan sensors, all readings are 0.
Make sure you have a 3-wire fan connected.
You may also need to increase the fan divisors.
See doc/fan-divisors for more information.
admin@gentoo ~ $