Score:1

Why is my Ubuntu 18.04.5 LTS 64bit going idle?

cr flag

I tend to run scripts for processing big datasets of 3D images and I find myself often surprised that during such operation, my computer just goes randomly idle, i.e., all the CPUs drop in activity and nothing happens anymore. To resume the processing operation, I found out that hitting the "ctrl" key does the trick. I also know that it has nothing to do with the sleep mode, as I deactivated it and I see that my monitor stays in operation, even when the CPUs drop.

My computer is running on Ubuntu 18.04.5 LTS 64bit. GNOME 3.28.2, Graphics NV117. Processor: Intel Xeon (R) E5-2640 v4 @ 2.4Ghz.

Do you have any idea of how to avoid this behavior? Is it very inconvenient right now, as none of my batch jobs can run for a long period of time.

Thanks a lot for your help already!

Rishon JR avatar
pl flag
Try doing `sudo do-release-upgrade` to upgrade your system. it seems to be a driver issue. And Ubuntu 22.10 includes a newer kernel, with newer drivers. Ubuntu 18.04 LTS will be EOL in early 2023.
mchid avatar
bo flag
Maybe not a sleep mode but it could be a powersaving mode. It might help to list your specs like processor, GPU, make and model, etc.
za flag
Can you exclude thermal problems while running your scripts?
MaxPhal avatar
cr flag
You mean the computer getting too warm? The computer is currently located in a laboratory where the temperature is between 15 and 20 degrees Celsius, all year long. It is also not against a wall or something, so the fans operates properly.
guiverc avatar
cn flag
I'd suggest applying all security updates/fixes asap, as if the details you provided are correct, you're more than a year behind on applying security fixes/patches. Refer https://fridge.ubuntu.com/2021/09/17/ubuntu-18-04-6-lts-released/ though do note installed systems upgraded before that date as that date was the ISO release date only.
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