Re: Acer Aspire 8930G laptop and general approach for reverse engineering sensors

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On 11/17/2013 07:41 PM, Tom Metro wrote:
Running lm-sensors on Ubuntu 12.04 on an Acer Aspire 8930G laptop and I see:

% sensors
acpitz-virtual-0
Adapter: Virtual device
temp1:        +38.0°C  (crit = +106.0°C)
temp2:        +48.0°C  (crit = +106.0°C)
temp3:        +48.0°C  (crit = +106.0°C)
temp4:        +43.0°C  (crit = +106.0°C)

nouveau-pci-0100
Adapter: PCI adapter
temp1:        +49.0°C  (high = +100.0°C, crit = +110.0°C)

coretemp-isa-0000
Adapter: ISA adapter
Core 0:       +33.0°C  (high = +105.0°C, crit = +105.0°C)
Core 1:       +33.0°C  (high = +105.0°C, crit = +105.0°C)

I'd like to figure out proper labels for these. The two coretemp sensors (if
working) are obvious, and nouveau I'd assume is the GPU temp. The rest from
acpitz-virtual-0 are less clear. They approximately map out the same
pattern, tracking system loading, with slightly different scaling factors.

Yes, that is probably what it is.

I didn't see any guidance in the FAQ on a general approach to reverse
engineering the labeling for sensors. There must be a recommended approach
for this.

You should be able to find out more by decoding the DSDT.

I did see in the FAQ that there is no database of configurations per
motherboard/laptop, but I would expect that with all the temperature
monitoring utilities for Windows, one or more of them likely has bundled
configuration files that can be used as a reference. (If so, this sort of
aggregated factual information could even be bulk converted to sensors.conf
format legally.)

Would be great. Unfortunately, it appears that the creators of the various Windows
utilities are not very enthusiastic about sharing the information they have.
Part of it may be because they get at least some of the information under NDA,
but at least some of them are simply not in a cooperative mind. Keep in mind
that Windows is inherently a closed-source environment, and people's mindset
in a closed-source world is a bit different.

Guenter


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