Arch Linux

Alfonso Cantos

Member

Registered: 2016-02-25

Posts: 2

Intel Coretemp fan start working too early, at 40 celsius

Hi there,

my laptop, HP Probook 430, intel based, is running Arch. My problem is that de fan is starting at 40 celsius. I have read many things, from the arch wiki, forums, nothing is working for me.

* The sensors output:

[usuario@nexus-6430 power]$ sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +40.0°C  (crit = +128.0°C)
temp2:         +0.0°C  (crit = +128.0°C)
temp3:         +0.0°C  (crit = +128.0°C)
temp4:         +0.0°C  (crit = +128.0°C)
temp5:        +23.0°C  (crit = +128.0°C)
temp6:        +84.0°C  (crit = +128.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +41.0°C  (high = +105.0°C, crit = +105.0°C)
Core 0:         +41.0°C  (high = +105.0°C, crit = +105.0°C)
Core 1:         +40.0°C  (high = +105.0°C, crit = +105.0°C)

* Sensors-detect output:

Now follows a summary of the probes I have just done.
Just press ENTER to continue: 

Driver `coretemp':
  * Chip `Intel digital thermal sensor' (confidence: 9)

Do you want to overwrite /etc/conf.d/lm_sensors? (YES/no): 
Unloading i2c-dev... OK
Unloading cpuid... OK

I tried modifying fan_div but /etc/sensors3.conf does not have any entry for coretemp.

My cpu is:

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 61
model name	: Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
stepping	: 4
microcode	: 0x1f
cpu MHz		: 2200.085
cache size	: 3072 KB
physical id	: 0
siblings	: 4
core id		: 0
cpu cores	: 2
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 20
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch ida arat epb pln pts dtherm intel_pt tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap xsaveopt
bugs		:
bogomips	: 4391.02
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

... and so on

What I am trying is to have the fan starting there work at 60 or 70 celsius, not 40...

Many thanks in advance.

Alfonso.

Last edited by Alfonso Cantos (2016-02-25 21:38:11)

Arup

Member

From: Earth

Registered: 2014-02-20

Posts: 95

Re: Intel Coretemp fan start working too early, at 40 celsius

Fan start and stop are BIOS coded functions and not OS dependent. See if they have a BIOS update for this.

Ziusudra

Member

Registered: 2014-04-19

Posts: 120

Re: Intel Coretemp fan start working too early, at 40 celsius

All of the above (and more) can be adjusted by overriding the package provides settings in /etc/sensors3.conf by creating /etc/sensors.d/foo wherein any number of tweaks will override the default values. It is recommended to rename 'foo' to the motherboard brand and model but this naming nomenclature is optional.
Note: Do not edit /etc/sensors3.conf directly since package updates will overwrite any changes thus losing them.

In the file you create you'll want to add something like

chip "coretemp-isa-0000"
   set temp1_max 50
   set temp1_max_hyst 45
   set temp2_max 52
   set temp2_max_hyst 47

The part in the Fan speed control page that says to edit sensors3.conf is wrong and will be punished.

Edit: sensors doesn't see any fans in your system ... you have no fan div to change ... do what Arup said.

Last edited by Ziusudra (2016-02-26 06:29:53)