Arch Linux

YesMen

Member

Registered: 2017-10-07

Posts: 16

Fan too loud [Solved]

Hello,

I am running a dual boot system with Win 10, which is why I can tell that the fan speed in arch is much higher than necessary.
I have tried to adjust the speeds using this guide:
https://wiki.archlinux.org/index.php/fan_speed_control
but it does not work. When I try the first suggested method under lm_sensors it does not work:

>sensors
iwlwifi-virtual-0
Adapter: Virtual device
ERROR: Can't get value of subfeature temp1_input: I/O error
temp1:            N/A  

acpitz-virtual-0
Adapter: Virtual device
temp1:        +27.8°C  (crit = +119.0°C)
temp2:        +29.8°C  (crit = +119.0°C)

amdgpu-pci-0100
Adapter: PCI adapter
fan1:        1813 RPM
temp1:        +29.0°C  (crit =  +0.0°C, hyst =  +0.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Package id 0:  +30.0°C  (high = +80.0°C, crit = +100.0°C)
Core 0:        +29.0°C  (high = +80.0°C, crit = +100.0°C)
Core 1:        +29.0°C  (high = +80.0°C, crit = +100.0°C)

pch_skylake-virtual-0
Adapter: Virtual device
temp1:        +34.5°C

>cat /etc/sensors.d/fan-speed-control.conf
chip "amdgpu-*"
set fan1_div 4

>sudo sensors -s 
Error: File /etc/sensors.d/fan-speed-control.conf, line 2: Unknown feature name
amdgpu-pci-0100: No such subfeature known

Using pwmconfig, I get a system with fans running at 100% and I need to reboot to get them to work normally again. I am quite certain the amdgpu-pci-0100 fan is the problem, since I can see it running at much higher RPM after pwmconfig.

What can I try next?

Thanks!

Last edited by YesMen (2018-02-10 20:47:58)

clidx

Member

Registered: 2015-04-26

Posts: 21

Re: Fan too loud [Solved]

On pwmconfig, when you are given a list of options - can't remember what they are exactly but it's something like 1) <chipset name>, 2) save and quit, 3) just quit - make sure you pick the right chipset instead of saving and quitting. This bit isn't the end of the process, I got stuck on this as well only 10 mins ago. "Save and quit" does nothing yet because it hasn't actually written the right info to /etc/fancontrol so it gets stuck on 100%. When you're back to that choice selection, then you can save and quit. Also did you actually start fancontrol after exiting pwmconfig?

The GPU fan is the only one showing up. If you want to control your CPU or other fans then run sensors-detect as per the wiki page.

YesMen

Member

Registered: 2017-10-07

Posts: 16

Re: Fan too loud [Solved]

Thanks clidx, that's exactly right.
I also get why the fan was running in the first place: the minimum temp setting was 20°C, which is basically room temperature. It couldn't get any cooler than that so it was always running...