[Solved] System fans not running

Frequency · 2022-04-08 05:47:47

Running headless arch on Dell Inspiron 15 7567 (Laptop)

> sensors show CPU temperatures for each core but Processor and Video fans running at 0 RPM, looking at the fans show them not moving too.

dell_smm-isa-0000
Adapter: ISA adapter
Processor Fan: 0 RPM (min = 0 RPM, max = 4900 RPM)
Video Fan: 0 RPM (min = 0 RPM, max = 4900 RPM)
CPU: +42.0°C
Ambient: +36.0°C
SODIMM: +37.0°C
Other: +33.0°C
GPU: N/A

> pwmconfig logs:

Giving the fans some time to reach full speed...
Found the following fan sensors:
hwmon4/fan1_input current speed: 0 ... skipping!
hwmon4/fan2_input current speed: 0 ... skipping!

There are no working fan sensors, all readings are 0.
Make sure you have a 3-wire fan connected.
You may also need to increase the fan divisors.
See doc/fan-divisors for more information.

Not sure if this can be fixed with software or if this is a hardware fault.

Last edited by Frequency (2022-04-13 14:05:29)

d_fajardo · 2022-04-08 07:22:20

Processor and Video fans running at 0 RPM

Are the fans actually not physically running or is it just the sensors? Have you checked the BIOS if there's an entry for the fan sensor there? If it's not running physically running, then it's more likely hardware

Frequency · 2022-04-08 08:07:39

I stated that when I checked the fans, they are not moving at all. the bios doesn't contain anything for fan control

Last edited by Frequency (2022-04-08 08:08:04)

mpan · 2022-04-08 08:31:10

Did that start to happen only after you installed and enabled fancontrol or was that situation present earlier? If, for whatever reason, fan speed can’t be properly detected, fancontrol may also set them to wrong values. You also did not mention what are the threshold temperatures you set.

If the situation persists with the fancontrol service disabled, does that happen only with no load and low temperatures? Many laptops will not enable fans until the temperature or load gets high enough. Has it been confirmed on any other system? Not neccessarily on the same laptop, just the same model.

The wiki also mentions i8kutils for Dell fan control. Alternatively see if your laptop doesn’t require an IPMI client.

seth · 2022-04-08 11:24:02

CPU:            +42.0°C
Ambient:       +36.0°C
SODIMM:     +37.0°C
Other:          +33.0°C

Do the fans spin up if you actually put some load and heat on the system?

Frequency · 2022-04-12 19:03:49

No, I use it as a server so there is a load on it, also with having the server be 50° without a exterior fan

Is there any bootable utility that would spin up my fans to see if they are actually alive?

seth · 2022-04-12 19:37:16

Not sure about "bootable utility that would spin up my fans", but there're various ways to control the fans:
https://wiki.archlinux.org/title/Fan_sp … ll_laptops

I use it as a server so there is a load on it

That's a weird inference - I have a raspi as cheap media server (mpd, dlna, http) and most of the time there's no load whatsoever on that system…
But to quote the example from the wiki, to give you a reference:

This example starts the fan at low speed when the CPU temperature reaches 55 °C, switching to high speed at 75 °C. The fan will switch back to low speed once the temperature drops to 65 °C, and turns off completely at 45 °C.

Frequency · 2022-04-12 19:51:57

I meant because whenever I am using the server there is a fair load on it sorry if it was confusing(?)

pwmconfig cannot even get my fans spinning, sensors show rpm at 0 and upon inspecting physically they do not spin at all, ever.

The wiki also mentions i8kutils for Dell fan control. Alternatively see if your laptop doesn’t require an IPMI client.

I don't think I am skilled enough to install/configure this : /

seth · 2022-04-12 20:04:58

It's not very hard.
https://aur.archlinux.org/packages/i8kutils
https://wiki.archlinux.org/title/Arch_U … g_packages
ANd for i8kutils, there's an example config in the wiki and the config file should be /etc/i8kutils/i8kmon.conf

Frequency · 2022-04-13 08:05:38

Well it fixed it! I installed i8kutils, but proceeded to not understand what to do with it, in which I then went to the dell-bios-fan-control AUR page, installed it and looked at the github for instructions. with bios control off the fans can now be controlled by pwmconfig and run at maximum speed :D

Thank you!

Last edited by Frequency (2022-04-13 08:05:54)

seth · 2022-04-13 13:14:33

Please always remember to mark resolved threads by editing your initial posts subject - so others will know that there's no task left, but maybe a solution to find.
Thanks.

Arch Linux

#1 2022-04-08 05:47:47

[Solved] System fans not running

#2 2022-04-08 07:22:20

Re: [Solved] System fans not running

#3 2022-04-08 08:07:39

Re: [Solved] System fans not running

#4 2022-04-08 08:31:10

Re: [Solved] System fans not running

#5 2022-04-08 11:24:02

Re: [Solved] System fans not running

#6 2022-04-12 19:03:49

Re: [Solved] System fans not running

#7 2022-04-12 19:37:16

Re: [Solved] System fans not running

#8 2022-04-12 19:51:57

Re: [Solved] System fans not running

#9 2022-04-12 20:04:58

Re: [Solved] System fans not running

#10 2022-04-13 08:05:38

Re: [Solved] System fans not running

#11 2022-04-13 13:14:33

Re: [Solved] System fans not running

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