Arch Linux

oddlyspaced

Member

Registered: 2020-04-13

Posts: 1

Unable to enable manual Fan pwm control on asus laptop

I've read this article and tried executing sensors-detect and pwmconfig but none of them are actually able to detect my fan.
Looking under hwmon I see the fans are set to auto mode and pwm1_enable is set to 2.
However whenever i try to echo 1 to the pwm1_enable file it always gives me an error as follows -

root@pandemic /s/c/h/hwmon4# echo 1 > pwm1_enable
write: Invalid argument

I've scoured the internet and tried a bunch of solutions regarding offloading and onloading the asus_nb_wmi module but none of them work.

My laptop's running a pretty hot and I want to manually set a constant high speed so as to counter the higher average temps.

unixman

Member

Registered: 2015-03-12

Posts: 182

Re: Unable to enable manual Fan pwm control on asus laptop

if you have this into (at any level as deep)  /sys/devices/   :             

$ acpihelp -i | grep -i fan                                     INT3394  ACPI System Fan                                                    PNP0C0B  Fan (Thermal Solution) 

then lookat

$ acpihelp -p | grep -i fan; acpihelp -p | grep -i cool

then execute your favorite method via eg :

 $ acpiexec -b "Execute your_method your_args"

NOT: your_method is absolute acpi path of method found below fan device that you need execute