Temperature sensors

turboscrew · 02-24-2015, 02:11 AM

Does anyone know where I could find out about temperature sensors?
I checked gkrellm, and can't figure out which sensor is which.
Like what are acpitz-virtual-0 temp1 and temp2?
What are the thermal zones? (Or where/how to find out?)
What's k10temp, temp1

Also, i'd like to know about the high and critical temperature limits - how to find out about them.

I'm especially interested to know about Acer Aspire 5536 sensors (AMD Athlon 2x Dual Core QL-64).

$ sensors
k10temp-pci-00c3
Adapter: PCI adapter
temp1: +64.0°C (high = +70.0°C)

acpitz-virtual-0
Adapter: Virtual device
temp1: +65.0°C (crit = +99.0°C)
temp2: +58.0°C (crit = +126.0°C)

smallpond · 02-25-2015, 07:46 AM

lm_sensors has config files for each known mobo. Check what your BIOS reports at startup for your model.

Example:
http://www.lm-sensors.org/wiki/Confi...gabyte/Z77-D3H

turboscrew · 02-26-2015, 02:06 AM

Unfortunately the machine is Acer-laptop. I don't know about the MoBo.
It also has one of those "safe BIOSes" - you can set passwords, boot order and SATA-mode, and that's about it. Can't even chang/seee the virtualization support state (no 'security'-tab.

allend · 02-26-2015, 05:14 AM

As you have an AMD Athlon 2x Dual Core QL-64 processor, then the CPU core temperature is provided by the k10temp kernel module. This is the k10temp sensor that you see.

From sysfs-api.txt in the kernel Documentation/thermal directory

Quote:

ACPI thermal zone may support multiple trip points like critical, hot,
passive, active. If an ACPI thermal zone supports critical, passive,
active[0] and active[1] at the same time, it may register itself as a
thermal_zone_device (thermal_zone1) with 4 trip points in all.
It has one processor and one fan, which are both registered as
thermal_cooling_device.

Apparently your device is also supplying two ACPI temperature zone sensors, probably the two cores of your processor.

turboscrew · 02-26-2015, 10:22 AM

As it shows in the picture in an earlier message, GKrellm shows 5 sensors!

Soadyheid · 02-26-2015, 10:52 AM

Does GKrellm itself show the same lables? I think mine just shows the CPU, mainboard sensor and the Video chip on my nVidia graphics card. I'm using a Windows laptop at present so can't check. I've only got one sensor for the CPU even though it has six cores and shows up on GKrellm as such. Six processor activity monitors that is, only one associated temperature sensor.

Play Bonny!

allend · 02-26-2015, 02:32 PM

Quote:

GKrellm shows 5 sensors!

Two of which are thermal_zone0 and thermal_zone1, and are probably the critical temperature values.

turboscrew · 02-27-2015, 12:39 AM

Quote:

Originally Posted by allend

Two of which are thermal_zone0 and thermal_zone1, and are probably the critical temperature values.

Funny that 'sensors' doesn't show them...?

Soadyheid · 02-27-2015, 04:14 AM

Can you post a picture of the GKrellm display showing the temperatures? If you do some compute bound process, like ripping a DVD, which sensor shows the highest temperature, getting somewhere low to mid 50s.?
If you select the sensor in GKrellm settings and hit the "Default" button, you can relabel it "CPU" and probably be right!

My settings actually identifies most of the sensors (I've got your "k10temp, temp1" thingys as well, no idea what they are) but CPU and nVidia GPU were identified automatically.

I found this which may shed some light.

Play Bonny!

turboscrew · 02-27-2015, 11:44 AM

OK, this is a Gkrellm snapshot.
Looks like the first 'temp1' and the first 'temp' are the same, and so is 'temp2' and the second 'temp'. The second 'temp1' seems to be something else.

That is:
acpitz@0/temp1 (first 'temp1')= thermal_zone0 (first 'temp')
acpitz@0/temp2 ('temp2') = thermal_zone1 (second 'temp')
k10temp@c3/temp1 ('second 'temp1')

Is it so that:
thermal_zone0 = core0 temp
thermal_zone1 = core1 temp
k10temp@c3/temp1 = the 'abstract' temp used by AMD

Or...?