Re: sensor identification
- From: floyd@xxxxxxxxxx (Floyd L. Davidson)
- Date: Fri, 11 May 2007 12:38:30 -0800
ebenZEROONE@xxxxxxxxxxx (Hactar) wrote:
So I've got a question. I set up lm_sensors, and now I can see
temperatures, fan speeds, and voltages. But some of them are not
identified, or IDed with a low confidence. I see:
eben@pc:~$ sensors
it8716-isa-0290
Adapter: ISA adapter
VCore: +1.25 V (min = +0.00 V, max = +4.08 V)
+3.3V: +3.36 V (min = +0.00 V, max = +4.08 V)
+5V: +5.01 V (min = +0.00 V, max = +7.02 V)
+12V: +12.03 V (min = +0.00 V, max = +16.32 V)
-12V: -12.01 V (min = -0.00 V, max = -16.20 V)
V5SB: +5.01 V (min = +0.00 V, max = +7.10 V)
VBat: +3.06 V
The voltages appear to be correct, but max/min values aren't
very useful. You might want to pull those down to 1%, 5% or 10%,
of the target voltage, depending on which voltage it is. For
example the VCore voltage has very tight regulation, but the -12VDC
voltage does not.
CPU Fan: 1344 RPM (min = 0 RPM)
Cs front: 2472 RPM (min = 0 RPM)
Cs rear: 2755 RPM (min = 0 RPM)
Those may or may not be accurate. If you have slow speed fans they
might be. It could just as easily be that they are going twice that
fast. In particular it would be amazing if the CPU fan is only going
1344 RPM.
Also, you might want to set the minimum RPM (where an alarm will be
indicated) at 1/2 or 2/3 the normal speed. A 0 RPM alarm is worthless.
CPU Temp: +29 C (low = -1 C, high = +127 C) sensor = diode
temp2: +36 C (low = -1 C, high = +127 C) sensor = thermistor
temp3: +25 C (low = -1 C, high = +127 C) sensor = thermistor
Those do not look particulary accurate. Unless you just turned on
the machine, the CPU is almost certain to be higher than 30C (86F).
You might try changing the sensor and see if there is one that gives
a reasonable value. Something over 40C is probably normal.
vid: +1.525 V
k8temp-pci-00c3
Adapter: PCI adapter
temp1: +28 C
temp3: +27 C
eben@pc:~$ cat /proc/acpi/thermal_zone/THRM/temperature
temperature: 40 C
The three fans and "CPU temp" I worked out myself. The fans I'm sure
about; I have a rheostat on the CPU fan, and the other two I unplugged
temporarily. "CPU temp" could be wrong, but it sure acts like the CPU.
You probably have the right sensors, but perhaps the actual values are
not correct.
--
Floyd L. Davidson <http://www.apaflo.com/floyd_davidson>
Ukpeagvik (Barrow, Alaska) floyd@xxxxxxxxxx
.
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