Arch Linux

physicalit

Member

Registered: 2016-02-12

Posts: 28

One core running in 100% after fresh install.

Hello,

I heave an HP ProBook 650 G2 with i5 processor.
After a fresh install of ArchLinux, one of the cores stays fully utilized by the system.
https://preview.ibb.co/f7soyb/Screensho … _18_25.png
https://preview.ibb.co/f86LBw/Screensho … _18_56.png

The odd part is that it does not says of a process that use it. I don't know how to investigate further.
This issue appears with both kernels LTS and Latest.

The temperature for core 0 was munch higher at first , but i reduce like 5 C by installing and enabling thermals.
Because of this, my fan constantly runs.

It does not seems to have performance impact. But for the battery, fan and CPU is not to good

Something else to mention is that the core never change. This is not normal.. usually the load should shift from one core to the other constantly..

Last edited by jasonwryan (2018-01-20 07:30:26)

physicalit

Member

Registered: 2016-02-12

Posts: 28

Re: One core running in 100% after fresh install.

I find more details about a workaround: https://askubuntu.com/questions/176565/ … et-so-high

It appears that after I run the command:

echo "disable" > /sys/firmware/acpi/interrupts/gpe6F

The core is ok, and the fan stops.

But I don't understand what is the impact of this, and why it happens.

jasonwryan

Anarchist

From: .nz

Registered: 2009-05-09

Posts: 30,424

Website

Re: One core running in 100% after fresh install.

Read the Code of Conduct and only post thumbnails http://wiki.archlinux.org/index.php/Cod … s_and_code

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