Arch Linux

RobSoko315

Member

From: Long Island, NY

Registered: 2009-07-15

Posts: 9

[SOLVED] 127 Degrees C

Hello all,

I reinstalled Arch on my 3rd generation Macbook Pro.

I installed lm_sensors, ran sensors-detect and when I run "sensors", I get:

coretemp-isa-0000
Adapter: ISA adapter
Core 0:       +70.0°C  (high = +100.0°C, crit = +100.0°C)

coretemp-isa-0001
Adapter: ISA adapter
Core 1:       +71.0°C  (high = +100.0°C, crit = +100.0°C)

applesmc-isa-0300
Adapter: ISA adapter
Left side  : 1994 RPM  (min = 2000 RPM)
Right side : 1998 RPM  (min = 2000 RPM)
TB0T:         +39.0°C  
TC0D:         +68.2°C  
TC0P:         +62.8°C  
TG0D:         +78.5°C  
TG0H:         +67.2°C  
TG0V:         +70.0°C  
TGTV:        +127.0°C  
TTF0:         +70.0°C  
TW0P:         +48.5°C  
Th0H:         +66.8°C  
Th1H:         +51.0°C  
Th2H:         +51.0°C  
Tm0P:         +53.5°C  
Ts0P:         +41.0°C  

nouveau-pci-0100
Adapter: PCI adapter
temp1:        +78.0°C  (high = +100.0°C, crit = +110.0°C)

I am concerned about that 127.0 C line! That's very hot.

I do not recall seeing this in my previous installation of Arch Linux. The only thing I've done differently is using the nouvaeu driver instead of the propreitary NVIDIA drivers (And that's just because I've been too lazy to configure NVIDIA today, I will soon though)

Should I be concerned about this high temperature?  And out of curiousity, does anyone know what TGTV and all those other lines mean?

Thank you,

Rob

Last edited by RobSoko315 (2011-04-25 03:15:48)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,784

Re: [SOLVED] 127 Degrees C

127C is indeed very hot.  That temperature exceeds the junction temperature on most parts.  Case temperatures (where the external sensors read) are typically 30-50 C lower than TJ.
Frankly, I would be very skeptical of any case temperature indication of 127.  Some chips (processors, FPGAs, etc...) may have an internal sensor made from a junction that is part of the die itself.  Even if this one of those in internal sensors, 127 C is  over the 'toasty' line.

I suspect the instrumentation is lying  to you.

If you run OS/X, are there any temperature data available? Do they correlate?

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Stebalien

Member

Registered: 2010-04-27

Posts: 1,237

Website

Re: [SOLVED] 127 Degrees C

Just FYI, 127 is the highest value of a signed byte.

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RobSoko315

Member

From: Long Island, NY

Registered: 2009-07-15

Posts: 9

Re: [SOLVED] 127 Degrees C

Just FYI, 127 is the highest value of a signed byte.

Good point, and interesting too! I also noted that over time, this number stays exactly 127.0, while the others change.  So it must be a mistake.

Running on OS X yields normal temperature readings.  The CPU and GPU cores do correlate, as well as some of the numbers that are lower-case in my above posting.  The all caps numbers like TGTV seem to have no OS X partner.

It seems I have nothing to worry about then (I think)

Thanks

Rob

Last edited by RobSoko315 (2011-04-25 03:15:24)