# How to tune PWM fans for CPU and Case in Ubuntu 20?

**URL:** <https://community.solid-run.com/t/how-to-tune-pwm-fans-for-cpu-and-case-in-ubuntu-20/373>\
**Category:** NXP LX2160\
**Tags:** NXP-LX2160\
**Created:** [July 10, 2022, 9:42am UTC](https://community.solid-run.com/t/how-to-tune-pwm-fans-for-cpu-and-case-in-ubuntu-20/373 "2022-07-10T09:42:17Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![the\_n00b](https://avatars.discourse-cdn.com/v4/letter/t/8e8cbc/32.png) [@the\_n00b](https://community.solid-run.com/u/the_n00b)\
**Post date:** [July 10, 2022, 6:16pm UTC](https://community.solid-run.com/t/how-to-tune-pwm-fans-for-cpu-and-case-in-ubuntu-20/373/2 "2022-07-10T18:16:17Z")

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AFAIK fan PWM is not enabled, you control the fans through I2C. See [Fan control](https://community.solid-run.com/t/fan-control/205) and [Fan PWM status?](https://community.solid-run.com/t/fan-pwm-status/340). In my case once I switched to ACPI+edk2 the fan quieted down instead of running full throttle all the time. Not sure how much control you are looking for but you can probably use e.g. cpufreq governors.

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