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I have a Lenovo G40-80 notebook with i5-5200U 2.2GHz and Intel HD Graphics 5500 and the fan run very slow. How can I improve the fan velocity?

I tried this, but I don't had success: Overheating in ubuntu 16.04 in Lenovo G50-80

These too, no success: Fan not running in Ubuntu 14.04

I don't have problems when I used windows 8.

What's the best solution for this on Ubuntu?

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Mikael Araujo
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2 Answers2

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Install cpufrequtils:

sudo apt-get install cpufrequtils

Go to terminal and type:

cpufreq-info

If your laptop is running intel_pstate, we have to disable that.

In terminal:

sudo gedit /etc/default/grub

And edit this line so it looks like this:

GRUB_CMDLINE_LINUX_DEFAULT="intel_pstate=disable quiet splash"

Then, reboot, and type this in terminal:

sudo cpufreq-set -g ondemand

What this command does is set a governor that controls the CPU based on load. Therefore, if you aren't running many intensive programs, your CPU will idle at a lower clock speed, thereby using less power and using less heat.

Now, if this doesn't work, we can try to manually control your fans. It is unlikely you will be able to control them, as you have a consumer laptop that is relatively recent- there probably aren't drivers for the fans.

sudo apt-get lm-sensors

See if your fan is there, with its RPM reading. If it is, then we can control the fan.

See this thread for more information: How to control fan speed?

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negusp
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Your fan is running slow and you are concerned but, you do not have a problem here.

Your temperature was revealed by typing:

cat /sys/class/thermal/thermal_zone*/temp

And the result returned was 41 degrees Celsius. This is a very good result!

By comparison my machine the fan runs on medium and the temperature is 65 degrees Celsius. All though the keyboard is "warm" it is not "hot" so I consider mine to be "good".

Your fan is automatically controlled by the ACPI. In order to make your fan run faster, you'd have to make the CPU hotter and the best way to do that is run some 3D games with high frame rates.

The recommendation to upgrade to 16.04 may make your machine run hotter (and therefore the fan run faster) as it for me with my--Intel 3rd generation Ivy Bridge i7 3630QM CPU.

WinEunuuchs2Unix
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