Re: Problems with set in5_max in nct6776-isa-0290

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On Wed, 25 Sep 2013 10:45:01 -0700, Guenter Roeck wrote:
> On Wed, Sep 25, 2013 at 06:01:47PM +0200, Kent Larsson wrote:
> > I want to change in5_min and in5_max. First I check that I have the right
> > value names:
> > 
> >     sensors -u
> >     ...
> >     in5:
> >       in5_input: 2.040
> >       in5_min: 1.224
> >       in5_max: 2.040
> >       in5_alarm: 1.000
> >     ...
> > 
> > Yes it looks that way. I try to set them in my configuration file
> > 
> >     test@debianstick:~$ cat /etc/sensors.d/custom
> >     chip "nct6776-isa-0290"
> >             ...
> >             set in5_min 1.224
> >             set in5_max 2.540
> > 
> > There seem to be no problem interpreting the configuration file, but only
> > in5_min takes affect
> > 
> >     test@debianstick:~$ sudo sensors -s
> >     test@debianstick:~$ sensors
> >     ...
> >     nct6776-isa-0290
> >     Adapter: ISA adapter
> >     ...
> >     in5:            +2.04 V  (min =  +1.22 V, max =  +2.04 V)  ALARM
> >     ...
> > 
> > A reboot does not help. I suspect that this is a bug, but I hope that I am
> > the bug. :-)
> 
> You can not go above 2.04V; that is the maximum supported by the ADC.
> I would be a bug if you can not set the maximum to, say, 1.9V.
> Question is if the input is connected to anything. Can you map it
> to a voltage shown in the BIOS ?

With a saturated input like this, I bet not. This input is to be
ignored.

(It would help a bit to know what board brand and model this is...)

-- 
Jean Delvare

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