Re: [lm-sensors] Gigabyte E240N, it87 module, fan speed control not working, readings may bad

[Guenter Roeck <linux@roeck-us.net>]

On Wed, Mar 27, 2013 at 09:27:45PM +0100, Hajdu Tamás Márk wrote:
> Hi,
> 
> Thanks for the info, maybe I just needed to write it down to really
> get it working:)
> I have figured it out that system fan is pwm2 (maybe it's temp shows
> -70, because there is no system thermometer) and after enable is set
> to 1 it is controllable via pwm2, so now I can write a script that
> reads hddtemp and set's it to the right value.
> 
You should be able to use the "fancontrol" script as starting point.

Guenter

> Thanks!
> Tamás
> 
> 2013-03-27 19:29 keltezéssel, Guenter Roeck írta:
> >On Wed, Mar 27, 2013 at 06:14:07PM +0100, Hajdu Tamás Márk wrote:
> >>Hi,
> >>
> >>If it is not connected shouldn't it report N/A or something like
> >>that? Also it is strange the out of 3 temp sensors the second one
> >How would it know ? That is why the configuration file supports the "ignore"
> >statement. Also, why is it strange ? There is no requirement that a board vendor
> >MUST connect sensors in a certain order.
> >
> >>shows -70 degrees:
> >># cat /sys/class/hwmon/hwmon1/device/temp1_input
> >>33000
> >># cat /sys/class/hwmon/hwmon1/device/temp2_input
> >>-70000
> >># cat /sys/class/hwmon/hwmon1/device/temp3_input
> >>46000
> >>If I get the meaning of the readings well, that 46 Celsius is the
> >>core temperature. It would be a bit surprising if that is true,
> >>cause there is no load on the machine and the CPU is taken back to
> >>750 Mhz, I would expect a lower value there too.
> >>
> >That really depends on your CPU. Yo could try to compare it with the output
> >of the core temperature sensor if your CPU supports one.
> >
> >>The pwmX_enable values are 0,2,2 though I can echo anything to it, I
> >>can't make the fan stop or change it's speed.
> >>
> >Setting a value to 1 should enable manual control. 2 is automatic, 0 turns it
> >off entirely. CPU fans can not be turned off, so if one fan is the CPU fan
> >it would not be surprising that it can not be turned off.
> >
> >>The reason I want to this is that I have made a special case for the
> >>machine and the fan I have connected to the system fan is only
> >>responsible for HDD cooling, it should controlled by the hddtemp
> >>values. But anyway it would be better to have control over the cpu
> >>cooling as well cause I think it is overcooled now, which is simply
> >>wasting energy.
> >>
> >>Cheers,
> >>Tamás
> >>
> >>
> >>2013-03-27 03:24 keltezéssel, Guenter Roeck írta:
> >>>On Wed, Mar 27, 2013 at 12:14:36AM +0100, Hajdu Tamás Márk wrote:
> >>>>Hi,
> >>>>
> >>>>I have a Gigabyte E240N mainboard (integrated amd cpu and gpu),
> >>>>which by pwmconfig reported to use it87 module. This is for first
> >>>>sight works, but one out of 3 temperature reading is always -70
> >>>>degrees (though it is the temp3, which I don't know what), other two
> >>>Most likely it is not connected to anything.
> >>>
> >>>>seems to good. Also the fan speed readings seems to be ok (I am not
> >>>>100% sure). What it really does, that hwmon1 is created and there
> >>>>are changing values so at least it is partially working.
> >>>>I have tried to use pwmconfig to configure and also tried to echo
> >>>>values I could think of, but I could not set (nor pwmconfig could)
> >>>>it's speed.
> >>>Fan control may be in automatic mode. That is the case if pwmX_enable
> >>>returns 2. If so, you are most likely better off by leaving it alone.
> >>>
> >>>Guenter
> >>>
> >>
> 
> 
> -- 
> Üdv: *Tamás*.

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