Ubuntu – Slow Fan Speed in Ubuntu

fan

I'd like to ask how can I speed up/control my laptop fan speed?
My laptop is always going hotter when running Ubuntu 14.04 than running Windows 8.1.

According to Psensor status, the Core1 & 2 and the Physical ID temperature could reach arround 55-60 Degree Celcius, but the fan speed is just running/spinning arround 93-132 RPM. In Windows 8.1 the temperature is just arround 47-50 Degree Celcius and the fan is running at high speed than Ubuntu.

Is there a way how to speed up my laptop fan speed?
or Is there a way to control my laptop fan speed?

My laptop is Lenovo G400.

Best Answer

Sounds like you have the opposite issue with fan speed to what I had. My fans used to run high, constantly. Here is my solution for getting my fan speeds back to normal, from another thread:

Fan speed is normalized by editing the line

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

in the grub configuration file found at /etc/default/grub so that it reads

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=!Windows 2012".

Follow these steps to try this solution:

Open a terminal, type

sudo gedit /etc/default/grub,

and press ENTER

Enter your login password and press ENTER (the password will not be displayed as you type it)

Edit the line,

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

such that it reads,

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi=!Windows 2012".

Click "Save", wait a few moments for the file to save, then close the text editor.

In the terminal, type

sudo update-grub

and hit ENTER

Finally, shut down your computer. Shut it down completely, so don't "restart" it.

Once you turn your computer back on and select the linux operating system whose grub file you edited earlier, your fans should be working normally. This solution has worked for me on Ubuntu, Linux Mint, Elementary OS, and LXLE on a Dell Inspiron 15R 5520 laptop.

I hope this remedies your issue.

Related Solutions

Ubuntu – Abnormal fan behavior: Sticking and persist on max speed (HP Envy 6-1154er & Ubuntu 14.04)

Eventually the solution was switching to Manjaro KDE. All the issues not only fan related I had with Ubuntu disappeared. Manjaro runs perfectly.

Ubuntu – Cannot configure Fan Speed with pwmconfig

Start out by man fancontrol to get a feel for what variables can be used in /etc/fancontrol. You will need the following when building the config: INTERVAL, FCTEMPS, FCFANS, MINTEMP, MAXTEMP, MINSTART, MINSTOP.

# Checks the temperature every 10 seconds.
INTERVAL=10
# Maps a fan to a temp sensor, each separated by a space 
FCTEMPS=fanpath=temppath fanpath2=temppath2
# Maps a fan to the fan speed sensor
FCFANS=fanpath=fanspeedpath fanpath2=fanspeedpath2
# The temperature below which the fan gets switched to minimum speed.
MINTEMP=fanpath=degreesC fanpath2=degreesC2
# The temperature over which the fan gets switched to maximum speed.
MAXTEMP=fanpath=degreesC fanpath2=degreesC2
# Sets the minimum speed at which the fan begins spinning.
MINSTART=fanpath=minspeed fanpath2=minspeed2
#The minimum speed at which the fan still spins.
MINSTOP=fanpath=minspeed fanpath2=minspeed2

Actual Sample:

INTERVAL=10
FCTEMPS=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm5=/sys/devices/platform/coretemp.0/hwmon/hwmon[[:print:]]*/temp3_input /sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm4=/sys/devices/platform/coretemp.0/hwmon/hwmon[[:print:]]*/temp3_input /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon[[:print:]]*/pwm1=/sys/devices/platform/coretemp.0/hwmon/hwmon[[:print:]]*/temp3_input
FCFANS=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm5=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/fan5_input /sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm4=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/fan4_input /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon[[:print:]]*/pwm1=
MINTEMP=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm5=55 /sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm4=50 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon[[:print:]]*/pwm1=55
MAXTEMP=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm5=60 /sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm4=60 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon[[:print:]]*/pwm1=60
MINSTART=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm5=70 /sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm4=70 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon[[:print:]]*/pwm1=70
MINSTOP=/sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm5=90 /sys/devices/platform/nct6775.656/hwmon/hwmon[[:print:]]*/pwm4=90 /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/hwmon/hwmon[[:print:]]*/pwm1=90

The [[:print:]] represent the hwmon number. You can use the actual number or the [[:print:]], sometimes the number changes between boots and the [[:print:]] allows it to find the correct hwmon number.

The issue will be FCFANS, whether fan1_input has valid data, and if not, whether fancontrol will continue to work without that.

Alternatively, you could attempt to write your own script that would set the value of hwmon2/pwm1, it ranges between 0 and 255.

Best Answer

Related Solutions

Ubuntu – Abnormal fan behavior: Sticking and persist on max speed (HP Envy 6-1154er & Ubuntu 14.04)

Ubuntu – Cannot configure Fan Speed with pwmconfig

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