Ubuntu 20.04: CPU usage peaks every 10 seconds - must be gnome-shell

Question

I upgraded from 19.10 to 20.04 a few weeks ago. Since then I am experiencing peaks of full CPU usage every 10 seconds. My Computer literally freezes for about a second. Here's a graph that shows what I mean: https://media-cdn.ubuntu-de.org/forum/attachments/52/34/9182809-auslastung_gnome-shell.png

Typing or scrollig sucks but watching videos is almost impossible.

I can see that gnome-shell is responsible for it, but I don't know what causes it. Any ideas?

Thanks!

Use top to see exactly what is causing it. Can also see this link if gnome shell is the problem. https://askubuntu.com/questions/1036441/ubuntu-18-04-gnome-shell-high-cpu-usage?rq=1 — crip659, Sep 04 '20 at 18:25
Alt+F2 to open run dialogue and then press 'r' to restart gnome-shell. Hope it helps. — Arijit Chatterjee, Sep 04 '20 at 18:46

score 0 · Answer 1 · answered Sep 04 '20 at 19:13

I turned my Wi-fi connection off and strangely everything worked fine. Turns out that MEGAsync, a cloud software, somehow causes gnome-shell to use all of my CPU's capacity. I reported a bug. So this is not a "solution" to the problem, but a workaround.

Ubuntu 20.04: CPU usage peaks every 10 seconds - must be gnome-shell

1 Answers1