[mythtv-users] Fan speed control using lm-sensors doesn't work.Help, please.

[Allen Edwards]

>
>
> The specs on an Athlon 64 X2 6000+ that I have say the max operating temp
> is
> 55-63 degrees. This chip has a thermal design power of 125 watts.
>
> Remember that the reported temperature is dependent on the calibration of
> the
> thermistor (usually poor), and several other factors, so I would not run
> any
> closer to the allowed max temp than you have to.
>
> If I were running at 60 degrees I'd try to get that down. Most electronics
> is
> happier at cooler temperatures (Google's conclusions regarding HDDs
> notwithstanding).
>
>
>
> --
> Brian Wood
> beww at beww.org


sensors looks like this:


k8temp-pci-00c3
Adapter: PCI adapter
Core0 Temp:  +51.0C
Core0 Temp:  +42.0C
Core1 Temp:  +47.0C
Core1 Temp:  +35.0C

it8716-isa-0e80
Adapter: ISA adapter
VCore:       +1.31 V  (min =  +0.00 V, max =  +4.08 V)
VDDR:        +3.23 V  (min =  +0.00 V, max =  +4.08 V)
+3.3V:       +0.00 V  (min =  +0.00 V, max =  +4.08 V)
+5V:         +4.87 V  (min =  +0.00 V, max =  +6.85 V)
+12V:       +12.10 V  (min =  +0.00 V, max = +16.32 V)
in5:         +0.00 V  (min =  +0.00 V, max =  +4.08 V)
in6:         +0.00 V  (min =  +0.00 V, max =  +4.08 V)
5VSB:        +6.85 V  (min =  +0.00 V, max =  +6.85 V)
VBat:        +3.26 V
fan1:       1380 RPM  (min =    0 RPM)
fan2:          0 RPM  (min =    0 RPM)
fan3:       1849 RPM  (min =    0 RPM)
temp1:       +60.0C  (low  =  -1.0C, high = +127.0C)  sensor = thermal diode
temp2:       +42.0C  (low  =  -1.0C, high = +127.0C)  sensor = transistor
temp3:       +25.0C  (low  =  -1.0C, high = +127.0C)  sensor = transistor
cpu0_vid:   +1.550 V


I am not really sure which number to watch.  I have been thinking it is
temp1.  The only temp I know for sure is the heat sink temperature which is
40 degrees. I know that because right now I have a temp sensor on it going
to an external meter.

The load on the computer is about 60% according to top (actually it reads
120% but with two cores I think the max is 200%).  So, I assume I am running
60% of 65 watts or 40 watts and at .25 degrees per watt I should have a 10
degree rise.  The case is probably about 30 degrees so that matches.  The
room is probably 22 degrees.

Summary:
Room to case 8 degrees
case to heat sink 10 degrees
heat sink to temp1 20 degrees (can't control this one).

What would you change?  Am I reading lm-sensors correctly?

Allen
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