CrunchBang Linux

sambarluc

#! Member

Registered: 2012-01-31

Posts: 55

Fan always on on HP 8440p

Hi everybody,
I know that this topic has been discussed several times, but I can't find a solution that works for me, maybe because it's a very hardware-dependent problem.
So, as many others, the fan of my laptop is running all the time (not full speed, but always running), despite the cpu is not that warm at all.
Sensors, for instance, says:

acpitz-virtual-0
Adapter: Virtual device
temp1:         +0.0°C  (crit = +127.0°C)
temp2:        +35.0°C  (crit = +127.0°C)
temp3:        +39.0°C  (crit = +128.0°C)
temp4:        +34.0°C  (crit = +127.0°C)
temp5:         +0.0°C  (crit = +115.0°C)
temp6:        +23.4°C  (crit = +128.0°C)
temp7:         +0.0°C  (crit = +128.0°C)
temp8:        +39.0°C  (crit = +128.0°C)
temp9:        +43.0°C  (crit = +128.0°C)
temp10:       +59.0°C  (crit = +128.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0:       +37.0°C  (high = +95.0°C, crit = +105.0°C)
Core 2:       +40.0°C  (high = +95.0°C, crit = +105.0°C)

I checked and I do have cpufrequtils running, and I tried installing fancontrol, but can't run it as pwmconfig can't find the right modules. My kernel is the 3.2.0-3-amd64. I tried to investigate a bit, but could not sort out which modules are appropriate for my i5 540. No graphics card in the laptop, so it can't be a gpu problem.
Any idea? Should I try downgrading to some 2.6 kernel? Or could it be a bios issue? This last option is the worst, as I don't have windows on the machine, so I'm not sure how I could upgrade the bios without having to mess up the installation.
Thanks!

Last edited by sambarluc (2012-10-11 09:15:08)

el_koraco

#!/loony/bun

From: inside Ed

Registered: 2011-07-25

Posts: 4,644

Re: Fan always on on HP 8440p

You need to go into the firmware (BIOS has been replaced by UEFI in your model). You hit Escape when the laptop is booting, and then you need to find the option "Fan always on on AC", and untick it.

xaos52

The Good Doctor

From: Planet of the @s

Registered: 2011-06-24

Posts: 4,309

Re: Fan always on on HP 8440p

Hi,

but can't run it as pwmconfig can't find the right modules.

Mind posting the output of

sudo pwmconfig

or how you came to this conclusion?

---

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sambarluc

#! Member

Registered: 2012-01-31

Posts: 55

Re: Fan always on on HP 8440p

I forgot to say it, I did the BIOS trick already, with no change (but the laptop is beautifully quiet inside the BIOS).

pwmconfig, instead, says:

# pwmconfig revision 5857 (2010-08-22)
This program will search your sensors for pulse width modulation (pwm)
controls, and test each one to see if it controls a fan on
your motherboard. Note that many motherboards do not have pwm
circuitry installed, even if your sensor chip supports pwm.

We will attempt to briefly stop each fan using the pwm controls.
The program will attempt to restore each fan to full speed
after testing. However, it is ** very important ** that you
physically verify that the fans have been to full speed
after the program has completed.

/usr/sbin/pwmconfig: There are no pwm-capable sensor modules installed

I added the module coretemp as suggested by sensors-detected, without any effect.

xaos52

The Good Doctor

From: Planet of the @s

Registered: 2011-06-24

Posts: 4,309

Re: Fan always on on HP 8440p

What does

sudo sensors-detect

report?

---

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sambarluc

#! Member

Registered: 2012-01-31

Posts: 55

Re: Fan always on on HP 8440p

sensors-detect does its tests and suggests to add coretemp module. Module added, no effect.

xaos52

The Good Doctor

From: Planet of the @s

Registered: 2011-06-24

Posts: 4,309

Re: Fan always on on HP 8440p

Added to?
/etc/modules

Perhaps you need to rebuild initramfs? I am not sure?
Is 'coretemp' loaded?
lsmod | grep coretemp

---

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sambarluc

#! Member

Registered: 2012-01-31

Posts: 55

Re: Fan always on on HP 8440p

lsmod | grep coretemp

gives

coretemp               12898  0 

which I guess means it's loaded, right?

xaos52

The Good Doctor

From: Planet of the @s

Registered: 2011-06-24

Posts: 4,309

Re: Fan always on on HP 8440p

Thats right.
No further ideas here, except searching for bug reports.

---

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sambarluc

#! Member

Registered: 2012-01-31

Posts: 55

Re: Fan always on on HP 8440p

I see, thanks for the help, though, I'll wait for some more input, and then maybe fill a bug report.

xaos52

The Good Doctor

From: Planet of the @s

Registered: 2011-06-24

Posts: 4,309

Re: Fan always on on HP 8440p

Always sensible to wait a bit, and see if anyone comes up with a new idea.
Good luck.

---

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tonyoptical

#! CrunchBanger

Registered: 2009-09-08

Posts: 198

Re: Fan always on on HP 8440p

Hi

I had a similar problem - fan constantly running on my Dell Vostro 131.
I have solved it by switching to the liquorix-kernels ...

http://liquorix.net/

Maybe this will help you as well.

dura

Bloated Gimp

From: interzone

Registered: 2012-09-15

Posts: 2,081

Re: Fan always on on HP 8440p

There's a thinkpad-fan (or something similar) package floating about debian repositories as well somewhere. I remember that it is a general tool for other machines too.

Edit: Found it, thinkfan it's called, and in the repositories.

Edit: This page might be useful too-  http://www.thinkwiki.org/wiki/How_to_control_fan_speed

and again: http://www.thinkwiki.org/wiki/Fan_control_scripts

Last edited by dura (2012-10-11 21:25:08)

sambarluc

#! Member

Registered: 2012-01-31

Posts: 55

Re: Fan always on on HP 8440p

Hi, I tried thinkfan too, but without much luck. I guess it's taylor-made for thinkpads, as the name says.

dura

Bloated Gimp

From: interzone

Registered: 2012-09-15

Posts: 2,081

Re: Fan always on on HP 8440p

thinkfan is not tailor made for thinkpads. It says so in the package description. You just have to configure it through CLI.