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<?xml version="1.0" encoding="UTF-8"?> | ||
<!DOCTYPE topic | ||
[ | ||
<!ENTITY % entities SYSTEM "../common/generic-entities.ent"> | ||
%entities; | ||
]> | ||
<!-- refers to legacy doc: <add github link to legacy doc piece, if applicable> --> | ||
<!-- point back to this document with a similar comment added to your legacy doc piece --> | ||
<!-- refer to README.md for file and id naming conventions --> | ||
<!-- metadata is dealt with on the assembly level --> | ||
<topic xml:id="cpu-troubleshoot" | ||
role="reference" xml:lang="en" | ||
xmlns="http://docbook.org/ns/docbook" version="5.2" | ||
xmlns:its="http://www.w3.org/2005/11/its" | ||
xmlns:xi="http://www.w3.org/2001/XInclude" | ||
xmlns:xlink="http://www.w3.org/1999/xlink" | ||
xmlns:trans="http://docbook.org/ns/transclusion"> | ||
<info> | ||
<title>Troubleshooting</title> | ||
<meta name="maintainer" content="[email protected]" its:translate="no"/> | ||
<abstract> | ||
<para> | ||
This part describes potential problems when monitoring CPU temperatures and their solutions. | ||
</para> | ||
</abstract> | ||
</info> | ||
<section xml:id="no-sensors-detected"> | ||
<title>No sensors were detected</title> | ||
<para> | ||
On laptops, the <command>sensors-detect</command> commands may provide the following output: | ||
</para> | ||
<screen>Sorry, no sensors were detected. | ||
This is relatively common on laptops, where thermal management is | ||
handled by ACPI rather than the OS.</screen> | ||
<para> | ||
This message is displayed when <command>sensors-detect</command> cannot find any hardware | ||
sensors on your laptop because most laptops handle thermal management through ACPI | ||
(Advanced Configuration and Power Interface), not the operating system.</para> | ||
<note> | ||
<title>The <command>sensors</command> command</title> | ||
<para> | ||
Despite the message about the failure to detects sensors, the <command>sensors</command> | ||
command may still work and provide expected results.</para> | ||
</note> | ||
<para>However, you can still check the CPU temperature using the tools that read | ||
from the ACPI interface.</para> | ||
<procedure xml:id="monitor-temp-acpi"> | ||
<step> | ||
<para> | ||
Check if the <package>acpi</package> package is installed. This package provides an interface for the | ||
hardware's embedded controller via ACPI, allowing you to check battery status, | ||
thermal zone temperature, and more. To install, run the command: | ||
</para> | ||
<screen>&prompt.sudo;<command>zypper install acpi</command></screen> | ||
</step> | ||
<step> | ||
<para> | ||
Check the CPU temperature directly from the <filename>/sys</filename> file system. | ||
The CPU temperature is located in <filename>/sys/class/thermal/thermal_zone*/temp</filename>. | ||
For example:</para> | ||
<screen>cat /sys/class/thermal/thermal_zone*/temp</screen> | ||
<note> | ||
<title>Temperature units</title> | ||
<para> | ||
The temperature is displayed in milliCelsius, for example, 41000. To see the temperature in Celsius, | ||
divide the output by 1000 to get, in our example, 41°C. | ||
</para> | ||
</note> | ||
</step> | ||
</procedure> | ||
</section> | ||
|
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<section xml:id="unrealistic-temperatures-shown"> | ||
<title>The displayed temperatures are unrealistic</title> | ||
<para> | ||
what to do with the received information, i.e. if the temperature is too high??? | ||
Maybe not all your sensors are properly supported (because) the temperatures shown are strange and why? | ||
</para> | ||
</section> | ||
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</topic> |