Re: Interpreting lm-sensors's output

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>> OT1H the "high=70" and "crit=100" would seem to give me the answer, but
>> OTOH I don't know whether I can trust them (actually, I hope some of
>> the output is "wrong" since the sensor readings go up routinely to 80°
>> during long compilations).
> They are correct and you should trust them.  If you reach 80°C then you
> probably need better thermal dissipation or a different CPU / graphics
> power management strategy.

The thing that puzzles me is that this low-power mini-ITX board (fanless
Brazos E350) is in a full-size ATX chassis (Antec Sonata) which
previously held an high-power Athlon X2 board (first with the stock
AMD heatsink+fan, and then later with a monster fanless heatsink), so
I have a hard time understanding how this low-power board can heat up
worse than the other one in the exact same context (same chassis,
power-supply, devices, system fan spinning at the same speed, ...).
The Athlon X2 barely reached 70°C in the hottest part of the summer,
under full load.

> BTW, you may have other (unsupported) sensors on the board... Give a
> try to http://dl.lm-sensors.org/lm-sensors/files/sensors-detect
> and report the full output.

OK, I finally added "acpi_enforce_resources=lax" and loaded the it87
module, which does give me a bit more data:

   k10temp-pci-00c3
   Adapter: PCI adapter
   temp1:        +51.6°C  (high = +70.0°C)
                          (crit = +100.0°C, hyst = +97.0°C)
   
   radeon-pci-0008
   Adapter: PCI adapter
   temp1:        +52.0°C
   
   it8721-isa-0a00
   Adapter: ISA adapter
   in0:          +3.06 V  (min =  +1.46 V, max =  +1.98 V)  ALARM
   in1:          +1.07 V  (min =  +0.00 V, max =  +1.52 V)
   in2:          +2.23 V  (min =  +0.00 V, max =  +1.52 V)  ALARM
   in3:          +0.01 V  (min =  +0.00 V, max =  +1.52 V)
   in4:          +1.02 V  (min =  +1.09 V, max =  +0.83 V)  ALARM
   in5:          +1.52 V  (min =  +1.31 V, max =  +0.78 V)  ALARM
   in6:          +1.12 V  (min =  +1.69 V, max =  +2.69 V)  ALARM
   3VSB:         +3.26 V  (min =  +0.00 V, max =  +3.05 V)  ALARM
   Vbat:         +3.24 V  
   fan1:           0 RPM  (min =   20 RPM)  ALARM
   fan2:           0 RPM  (min =   20 RPM)  ALARM
   temp1:        +30.0°C  (low  =  +0.0°C, high = +127.0°C)  sensor = thermal diode
   temp2:       -128.0°C  (low  = +13.0°C, high = -18.0°C)  sensor = disabled
   temp3:       -128.0°C  (low  = -67.0°C, high =  -3.0°C)  sensor = disabled
   intrusion0:  ALARM

So I guess the it87 "temp1" is a "motherboard" sensor.  This one always
stays much lower than the other two sensors.


        Stefan

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