Arch Linux

geenux

Member

Registered: 2014-07-22

Posts: 1

Fan speed control

Hi,
My fan is working properly, and never overheating, so that's a good thing. My annoyance comes from the way that the fan activates itself.
My CPU temperature is usually around 50°. When it drop under 50°, the fan slows down, or even stop. As soon as it goes over 50°, the fan just activates for a brief moment (couple of seconds), thus bringing the temperature back under 50°.
This is very annoying, as it is basically turns on anytime I do something minor, such as scrolling for instance! It even activates fairly often when I don't do anything.
So usual activation pattern would end up being something like this: 5s off, 3s on, 10s off, 2s on, 5s off....... Very very annoying!

So I was looking to configure the fan speed, but it doesn't get reported anywhere:

I have an i7 processor

yes "" | sensor-detect   (accept default proposal everytime)

# sensors-detect revision 6209 (2014-01-14 22:51:58 +0100)
# System: Micro-Star International Co., Ltd. GE60 0NC\0ND [REV:1.0] (laptop)
# Board: Micro-Star International Co., Ltd. MS-16GA

This program will help you determine which kernel modules you need
to load to use lm_sensors most effectively. It is generally safe
and recommended to accept the default answers to all questions,
unless you know what you're doing.

Some south bridges, CPUs or memory controllers contain embedded sensors.
Do you want to scan for them? This is totally safe. (YES/no): 
Module cpuid loaded successfully.
Silicon Integrated Systems SIS5595...                       No
VIA VT82C686 Integrated Sensors...                          No
VIA VT8231 Integrated Sensors...                            No
AMD K8 thermal sensors...                                   No
AMD Family 10h thermal sensors...                           No
AMD Family 11h thermal sensors...                           No
AMD Family 12h and 14h thermal sensors...                   No
AMD Family 15h thermal sensors...                           No
AMD Family 15h power sensors...                             No
AMD Family 16h power sensors...                             No
Intel digital thermal sensor...                             Success!
    (driver `coretemp')
Intel AMB FB-DIMM thermal sensor...                         No
VIA C7 thermal sensor...                                    No
VIA Nano thermal sensor...                                  No

Some Super I/O chips contain embedded sensors. We have to write to
standard I/O ports to probe them. This is usually safe.
Do you want to scan for Super I/O sensors? (YES/no): 
Probing for Super-I/O at 0x2e/0x2f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      No
Probing for Super-I/O at 0x4e/0x4f
Trying family `National Semiconductor/ITE'...               No
Trying family `SMSC'...                                     No
Trying family `VIA/Winbond/Nuvoton/Fintek'...               No
Trying family `ITE'...                                      No

Some hardware monitoring chips are accessible through the ISA I/O ports.
We have to write to arbitrary I/O ports to probe them. This is usually
safe though. Yes, you do have ISA I/O ports even if you do not have any
ISA slots! Do you want to scan the ISA I/O ports? (YES/no): 
Probing for `National Semiconductor LM78' at 0x290...       No
Probing for `National Semiconductor LM79' at 0x290...       No
Probing for `Winbond W83781D' at 0x290...                   No
Probing for `Winbond W83782D' at 0x290...                   No

Lastly, we can probe the I2C/SMBus adapters for connected hardware
monitoring devices. This is the most risky part, and while it works
reasonably well on most systems, it has been reported to cause trouble
on some systems.
Do you want to probe the I2C/SMBus adapters now? (YES/no): 
Using driver `i2c-i801' for device 0000:00:1f.3: Intel Panther Point (PCH)
Module i2c-dev loaded successfully.

Next adapter: i915 gmbus ssc (i2c-0)
Do you want to scan it? (yes/NO/selectively): 

Next adapter: i915 gmbus vga (i2c-1)
Do you want to scan it? (yes/NO/selectively): 

Next adapter: i915 gmbus panel (i2c-2)
Do you want to scan it? (yes/NO/selectively): 

Next adapter: i915 gmbus dpc (i2c-3)
Do you want to scan it? (yes/NO/selectively): 

Next adapter: i915 gmbus dpb (i2c-4)
Do you want to scan it? (yes/NO/selectively): 

Next adapter: i915 gmbus dpd (i2c-5)
Do you want to scan it? (yes/NO/selectively): 

Next adapter: DPDDC-D (i2c-6)
Do you want to scan it? (yes/NO/selectively): 


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

sensors

coretemp-isa-0000
Adapter: ISA adapter
Physical id 0:  +48.0°C  (high = +87.0°C, crit = +105.0°C)
Core 0:         +47.0°C  (high = +87.0°C, crit = +105.0°C)
Core 1:         +48.0°C  (high = +87.0°C, crit = +105.0°C)
Core 2:         +45.0°C  (high = +87.0°C, crit = +105.0°C)
Core 3:         +47.0°C  (high = +87.0°C, crit = +105.0°C)

/etc/conf.d/lm_sensors

HWMON_MODULES="coretemp"

And of course pwconfig doesn't see it either:

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

Any idea what I could do to get it to see my fan?
Right now, I'm guessing it's controlled by the BIOS, but I can't find any way to configure it from there either.

Thanks for your help!

surfatwork

Member

Registered: 2012-01-05

Posts: 137

Re: Fan speed control

Given that no Super I/O chips were detected, it seems likely that lm-sensors doesnt support the chip on your device.