No Temperatures shown with Raspberry Pi

[xxxserxxx]

Hi,
I'm testing gotop Version 1.4.0 on a pi zero w with the latest image of Raspian Strech Lite.
The only problem I have is that no Temperatures are shown.

• The output of uname -a
  Linux adc 4.14.34+ #1110 Mon Apr 16 14:51:42 BST 2018 armv6l GNU/Linux

• Terminal shell (like zsh or bash)
  bash

• Terminal emulator (like iTerm or gnome terminal)
  mac terminal -> ssh > server

• Using tmux?
  no

Regards

Original ticket: cjbassi#37
Original poster: @NuggTV
Additional input: @PrivateGER, @staranto, @pgaskin, @santosh, @TheWorms, @siduxdevil, @Jpund

[xxxserxxx]

Hi, can you test this binary and tell me if any temperatures are shown now? I compiled that from the issue-37 branch so feel free to run that branch with the go tools instead if you want.

[xxxserxxx]

Hi, just testet the new binary. Still no Temperatures shown

[xxxserxxx]

Thanks for testing that. Since that didn't work, that means the issue is coming from one of gotop's dependencies called gopsutil. Gonna have to create an issue over there and get back to you.

[xxxserxxx]

Hey, are there any updates on this? I have the same problem with my Raspberry Pi with a fresh image.

[xxxserxxx]

Sorry, not updates yet. If you could give me the output of uname -a that would help tho.

[xxxserxxx]

Output is:
Linux Server-Raspberry-Pi 4.14.61-v7+ #1133 SMP Fri Aug 10 11:04:43 BST 2018 armv7l GNU/Linux

[xxxserxxx]

Thanks, and actually if you could give me the Raspberry Pi model # too that would be awesome.

[xxxserxxx]

It's a Raspberry Pi Model 3 B+.

[xxxserxxx]

Same issue here with...

3B+ (Linux pi99 4.14.50-v7+ #1122 SMP Tue Jun 19 12:26:26 BST 2018 armv7l GNU/Linux)
3B (Linux pi3 4.9.59-v7+ #1047 SMP Sun Oct 29 12:19:23 GMT 2017 armv7l GNU/Linux).

The gotop binary is from download.sh in commit 5b5ccfc.

[xxxserxxx]

This is because the temperatures for the RPi need to be retrieved using vcgencmd measure_temp or /sys/class/thermal/thermal_zone0/temp, and gopsutil gets the temperature using /sys/class/hwmon. The RPi does not support hwmon.

[xxxserxxx]

I'm also facing this issue of temperature not being shown.
I'm on Fedora 29 with zsh on Konsole (default settings).

[xxxserxxx]

@santosh Are you on a raspberry pi? If so, could you give its model and the output of uname -a? And if not, then feel free to create a new issue for your given hardware/software configuration.

[xxxserxxx]

same error, no temperatures shown

Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux
Raspbian

[xxxserxxx]

Is there any perspective of this being fixed any time soon? I run into it with Raspbian Buster on a Pi4. Planning on writing an article for Gotop for a Linux magazine. But no temps specially on RasPi seems like a showstopper for now.

Linux raspberrypi 4.19.57-v7l+ #1244 SMP Thu Jul 4 18:48:07 BST 2019 armv7l GNU/Linux

[xxxserxxx]

@NuggTV, @PrivateGER, @staranto, @pgaskin, @santosh, @TheWorms, @siduxdevil, @Jpund:

If any of you are still using gotop and Raspberry(s), can you confirm that this issue still exists? gopsutils has had numerous version bumps since the last comment by @siduxdevil

[Lomanic]

@xxxserxxx Please check this comment shirou/gopsutil#391 (comment) you may have to adjust gotop as it seems to still only discriminate against _input values, excluding _thermal ones on Raspberry Pi/hosts without hwmon.

[xxxserxxx]

@Lomanic -- how arbitrary are the strings produced by gopsutil? Checking for one magic string is suspicious; adding a variety of suffixes that could indicate temperature sensors seems suboptimal. Do you know if gopsutils is going to continue adding different suffixes for things-that-are-thermal-sensors?

Follow-up: In this comment you mention that the change wasn't made; does this mean that _thermal keys were not added? I don't have access to a Pi -- what keys are gopsutil returning now? It looks like psutil is still using _input. Are you able to confirm?

[Lomanic]

gopsutil returns the same strings as psutil shirou/gopsutil#391 (comment) (I cannot verify this again for the moment), we aligned with psutil in shirou/gopsutil#861

[xxxserxxx]

Ok. There are no _thermal values returned for AMD64+Linux, only _input. If I'm understanding the (go)psutil threads, on Raspberry Pi (ARM+Linux?) the suffixes are instead _thermal. Do you know if there are other variations for other platforms?

[Lomanic]

Thermal zones are only used as a fallback on hosts lacking hwmon, the labels in /sys/class/thermal/thermal_zone*/type are quite random, for example on my amd64 laptop, cat /sys/class/thermal/thermal_zone*/type returns

acpitz
INT3400 Thermal
TSKN
NGFF
pch_skylake
B0D4
iwlwifi_1
x86_pkg_temp

[xxxserxxx]

Isn't the issue that -- for hwmon -- each device returns multiple sensor values; us downstream projects have to choose one of these to represent the "current temp." For hwmon, that's *_input. For thermal zones, there's a more simple .../temp value, e.g. /sys/class/thermal/thermal_zone0/temp.

In other words, on your amd64 laptop, you have 8 zones, which would explode into, I don't know, something like 48 different hwmon K/V pairs, one of which is *_input and represents the current temperature. For thermal zone systems, psutil ... what ... adds _thermal to the key that holds the value of .../temp?