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Z420 with Linux: How to control fan noise

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When running Windows 10, my Z420 is not totally silent but has a tolerable noise level.


This is different when I run Linux on it. It doesn't matter which distro, the noise coming from the fans is annoying. The sensors command from the lm_sensors package  reports nothing about fans:


$ sudo sensors
Adapter: ISA adapter
Physical id 0:  +57.0°C  (high = +79.0°C, crit = +97.0°C)
Core 0:         +54.0°C  (high = +79.0°C, crit = +97.0°C)
Core 1:         +57.0°C  (high = +79.0°C, crit = +97.0°C)
Core 2:         +54.0°C  (high = +79.0°C, crit = +97.0°C)
Core 3:         +57.0°C  (high = +79.0°C, crit = +97.0°C)




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


I guess motherboard drivers are needed. The Red Hat 7.1 driver CD that I found seems to contain graphics drivers only.


Does HP publish Linux drivers for Z workstation motherboards?

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