Re: Dell Latitude E6440 & i8k

[Guenter Roeck]

On 05/16/2014 12:11 PM, Jean Delvare wrote:
> Hi Pali,
>
> On Fri, 16 May 2014 20:37:41 +0200, Pali Rohár wrote:
> > Hello,
> >
> > on Dell Latitude E6440 driver i8k reporting total nonsense values
>
> That's kind of excessive wording, the output isn't that bad.
>
> > $ sensors
> > i8k-virtual-0
> > Adapter: Virtual device
> > Right Fan:   93450 RPM
> > CPU:          +57.0°C
> > temp2:        +57.0°C
> > temp3:        +40.0°C
> > temp4:       +127.0°C
> >
> > Right Fan and temp4 are for sure incorrect.
>
> Driver is reverse-engineered so this is best effort and some tweaking
> may be needed.
>
> > Value temp4 is always 127 and is never changing, but value for
> > Right Fan is increasing when fan is more noisy. So it looks like
> > value for Right Fan is not correctly normalized or multiplier is
> > incorrect.
> >
> > And name "Right" is incorrect too. Fan is on left side of this
> > notebook, not right as reported by driver.
> >
> > It is possible to fix these problems?
>
> Load the i8k driver with fan_mult=1.

Would it make sense to change the default multiplier to 1 ?
Lots of people have problems with it, and trying to figure out
affected machines one by one would be an all but impossible task.

Guenter


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