Is it possible to control fans in pfense ?

stephenw10

Hmm, it does seem hotter than I might have expected for that CPU but not to a dangerous level.

The only temp limits I can find for that cpu is Tcase which is at the heat spreader which is always going to be cooler than the core. Seems to be 73C. So 54C at the core is well below that.

It might be possible to set the fan control values if it's a 3 or 4 wire controlled fan but it would probably require some coding and poking about.

Steve

Grimson

@firefox:

Is there a way to make him work permanently ?

Get an adapter like this: https://www.amazon.com/ExtremeMod-Computer-Connector-Y-Splitter-Adapter/dp/B00DU8ZZ0O and connect it directly to the PSU. If the fan still stops at random it's either broken or has it's own temp control, in that case replace it.

firefox

It might be possible to set the fan control values if it's a 3 or 4 wire controlled fan but it would probably require some coding and poking about.

it is 3 wire fan

I will first try to connect it directly to power supply as Grison suggested
First the simpler solution

If that does not work I will proceed from there

Thanks for the help

Ryu945

@firefox:

The temperature on the computer is about 54 degrees
That's high
I added a fan in the front part but it did not matter
I noticed that the rear fan stops working from time to time
Is there a way to make him work permanently ?
I did not find bios option to adjust the fans

On the previous computer which is older it was fixed between 35 and 40 degrees

Is the fan plugged into the power/control area for the CPU fan?

firefox

Is the fan plugged into the power/control area for the CPU fan?

yes
cpu fan has 4 wire

firefox

Something strange I found
I opened the case to connect the rear fan directly to a power supply
So now he works very fast and makes a lot of noise
I tried to connect the rear fan to another connection on the motherboard of a fan
And there it works exactly as if I connected it directly to power supply

I connected the front fan to the rear fan connector or power supply
In both cases the fan operates but not as fast as the rear fan

I left the rear fan connected to the front fan connector
And the front fan is directly connected to the power supply

The temperature is now about 45 degrees

But there is a lot of noise from the computer chassis
Because of the rear fan that works at maximum speed

By the way these are simple 92 mm fans 3 wires

Ryu945

@firefox:

Is the fan plugged into the power/control area for the CPU fan?

yes
cpu fan has 4 wire

What I meant was there are other fan ports that are not the CPU fan port. Is it plugged into the CPU one or another one?

firefox

there are 3 fan port
1 cpu
2 system fan

The CPU fan is connected to the CPU port
rear fan is connected to a system port 1
Front fan connected to system port 2

There's another port I do not recognize
The connection is the same as that of the fans

I plugged in a fan but it does not work

I added a picture of the motherboard if that would help (lenovo rev vo.3)
In a red circle, a 4-pin plug (cpu fan is connected here)
In the white circles a 3-pin plug (system fans is connected here)
in the brown circle the plug I do not know what it is

1.jpg_thumb

stephenw10

Does the BIOS temperature reading agree with that coretemp is showing? It can report incorrectly if it doesn't have the correct TJmax value for that CPU.

Steve

firefox

Does the BIOS temperature reading agree with that coretemp is showing?

yes
This page of pc Health in the bios

![Screenshot from 2018-01-11 19-38-55.png](/public/imported_attachments/1/Screenshot from 2018-01-11 19-38-55.png)
![Screenshot from 2018-01-11 19-38-55.png_thumb](/public/imported_attachments/1/Screenshot from 2018-01-11 19-38-55.png_thumb)

Guest

This is probably because it's a lenovo-specific motherboard and its firmware is specifically designed for the case this originally came with. As soon as you deviate from what the OEM intended to do with it and if the firmware is limited, this type of annoying issue becomes rather common.

firefox

I understand
Thanks for the help
I'll try to get another motherboard

SammyWoo

@firefox:

I guess if the rear fan works without breaks
The temperature will drop to a lower level

Dude, the pic shows the cpu is sitting at only 35c, the ZONE is the one getting 55. What is this ZONE? Not the cpu I don't think. Does this temperature stay static? come up like that the minute you boot, then it's a bogus sensor to be ignored, otherwise some part of the Mobo, not cpu, is getting the 55c. Own an IR thermometer? real fun and useful.