Sensors swapped?

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On Sat, 2 Dec 2006 15:01:44 +0100, wixor wrote:
> Hello all, I get the following sensors output:
> 
> wixor: ~: sensors
> k8temp-pci-00c3
> Adapter: PCI adapter
> Core0 Temp:
>              +54 C
> 
> it8712-isa-0290
> Adapter: ISA adapter
> VCore 1:   +1.41 V  (min =  +0.00 V, max =  +4.08 V)
> VCore 2:   +0.00 V  (min =  +0.00 V, max =  +4.08 V)   ALARM
> +3.3V:     +3.28 V  (min =  +0.00 V, max =  +4.08 V)
> +5V:       +5.08 V  (min =  +0.00 V, max =  +6.85 V)
> +12V:     +12.10 V  (min =  +0.00 V, max = +16.32 V)
> -12V:      -4.17 V  (min = -27.36 V, max =  +3.93 V)
> -5V:      -13.64 V  (min = -13.64 V, max =  +4.03 V)   ALARM
> Stdby:     +4.92 V  (min =  +0.00 V, max =  +6.85 V)
> VBat:      +3.09 V
> fan1:     2596 RPM  (min =  811 RPM, div = 8)
> fan2:        0 RPM  (min =    0 RPM, div = 8)
> fan3:     6250 RPM  (min =    0 RPM, div = 8)
> M/B Temp:    +52 C  (low  =    -1 C, high =  +127 C)   sensor = thermistor
> CPU Temp:    +40 C  (low  =    -1 C, high =  +127 C)   sensor = thermistor
> Temp3:       +30 C  (low  =    -1 C, high =  +127 C)   sensor = thermistor
> 
> Now have a look at -12V and -5V sensors - their values don't match
> their labels. Are they hardware-swapped on mainboard or is it software
> error? Using debian packages and self-compiled kernel 2.6.19 on amd64,
> A8N-E ASUS mainboard, nforce4 chipset

This is a user error, who did not read the FAQ ;)

http://www.lm-sensors.org/wiki/FAQ/Chapter3#a-5Vand-12Vreadingsarewayoutofrange

In your case, I can tell for sure that the line labeled "-5V" above is
unused (wired to the ground) so you can add an "ignore in6" statement
in the configuration file. The line labelled "-12V" looks better, it's
probably used. Check your BIOS, what does it display after +12V, if
anything? Maybe it's -12V but using a different compute formula:

   compute in5 -(1+(30/10))*@, -@/(1+(30/10))

This is only a wild guess though, the formula might be wrong, and it
might not be -12V at all in the first place. If the BIOS doesn't help,
your only hope is to ask the motherboard manufacturer, as stated in the
FAQ, or just ignore this value.

-- 
Jean Delvare




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