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Subject[lm_sensors] wrong sensors readings from w83782d on Tyan Dual K7/Thunder
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Dan, thanks, for your ultimate help on this topic.

On Thursday, 15. November 2001 03:50, Dan Hollis wrote:
> On Wed, 14 Nov 2001, Hans-Peter Jansen wrote:
> > fan1: 7180 RPM (min = 3000 RPM, div = 2)
> > <3590> fan2: 7105 RPM (min = 3000 RPM, div = 2)
> > <3515>
>
> Fan divisor is wrong.
> adjust /proc/sys/dev/sensors/w83782d-i2c-0-2d/fan_div as needed.

ok, then

tyrex:~# echo "4 4 4" > /proc/sys/dev/sensors/w83782d-i2c-0-2d/fan_div
tyrex:~# sensors | egrep ^fan
fan1: 6887 RPM (min = 1500 RPM, div = 4)
fan2: 7031 RPM (min = 1500 RPM, div = 4)

tyrex:~# echo "1 1 1" > /proc/sys/dev/sensors/w83782d-i2c-0-2d/fan_div
tyrex:~# sensors | egrep ^fan
fan1: 7142 RPM (min = 6000 RPM, div = 1)
fan2: 6716 RPM (min = 6000 RPM, div = 1)

Is adjusting the min value the intended behaviour?
I also tried this in /etc/sensors.conf:
set fan1_div 4
set fan2_div 4
set fan1_min 2000
set fan2_min 2000
ignore fan3

Again, with no success. The fan value isn't corrected. Or is this
a userland problem. (Divide yourself and get happy?)

> > temp1: +77.0°C (limit = +60°C, hysteresis = +50°C) sensor =
> > thermistor <46°C>
> > temp2: +76.5°C (limit = +60°C, hysteresis = +50°C) sensor =
> > thermistor <41°C>
> > temp3: +77.0°C (limit = +60°C, hysteresis = +50°C) sensor =
> > thermistor <46°C>
>
> thermistor type is wrong.
>
> echo "2" > /proc/sys/dev/sensors/w83782d-i2c-0-2d/sensor{1..3}

That does the trick. I was looking at the wrong place ("w83781d")...

set sensor1 2
set sensor2 2
set sensor3 2

# examples for temperature limits
set temp1_over 65···
set temp1_hyst 55···
set temp2_over 65···
set temp2_hyst 55···
set temp3_over 65···
set temp3_hyst 55···

Readings from temp2 are always lower than from 1 and 3.
BIOS says:
temp1 = cpu0
temp2 = cpu1
temp3 = chassis

I tend to distrust the BIOS and think that 1 and 3 are cpu temps,
and 2 is chassis temp, but I also tend to distrust these reading
generally, because of the low variance between the readings:
tyrex:~# sensors | egrep ^temp
temp1: +46.0°C (limit = +65°C, hysteresis = +55°C) sensor = 3904
transistor
temp2: +42.0°C (limit = +65°C, hysteresis = +55°C) sensor = 3904
transistor
temp3: +45.0°C (limit = +65°C, hysteresis = +55°C) sensor = 3904
transistor

tyrex:~# sensors | egrep ^temp
temp1: +46.0°C (limit = +65°C, hysteresis = +55°C) sensor = 3904
transistor
temp2: +43.0°C (limit = +65°C, hysteresis = +55°C) sensor = 3904
transistor
temp3: +46.0°C (limit = +65°C, hysteresis = +55°C) sensor = 3904
transistor

More of a headache are the voltage readings:
VCore 1: +1.74 V (min = +1.74 V, max = +1.93 V) ALARM
VCore 2: +2.84 V (min = +1.74 V, max = +1.93 V)
+3.3V: +3.32 V (min = +3.13 V, max = +3.45 V)
+5V: +4.89 V (min = +4.72 V, max = +5.24 V)
+12V: +4.71 V (min = +10.79 V, max = +13.19 V)
-12V: -2.11 V (min = -10.90 V, max = -13.21 V)
-5V: +2.71 V (min = -4.76 V, max = -5.26 V)
V5SB: +4.32 V (min = +4.72 V, max = +5.24 V)
VBat: +3.29 V (min = +2.40 V, max = +3.60 V)
vid: +1.85 V

VCore 2, +12V, -12V, -5V, V5SB are bogus (and no ALARM flag)

I have no idea how to correct the corresponding formulas in
/etc/sensors.conf. Does somebody did it, before?

> -Dan

Cheers,
Hans-Peter
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