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I am aware of the similar sounding question: Ubuntu 18.04 gnome-shell high CPU usage

However my issue is a bit different, since it is not related to the mouse/ clock/animations because I deactivated all of those features and did not move the mouse and still could observe my issue: If I disable gnome-extensions completely via gnome-tweak-tools the following happens with my idle CPU usage of gnome-shell:

  • Alt+F2+R: 10%
  • Reboot: 0%-2%

Why is there a difference between a reboot and gnome-shell replace?

If I don't disable gnome-extension as such but deactivate every extension the following happens with the idle CPU usage of gnome-shell:

  • Alt+F2+R: 10%
  • Reboot: 10%

Why is there a such a big difference between disabling all extensions and the extension functionality itself?

The CPU usage of gnome-shell is taken when everything was idle (no mouse movement/ no seconds in clock/ no animation)

Kulfy
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v.tralala
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    Possible duplicate of [Ubuntu 18.04 gnome-shell high CPU usage](https://askubuntu.com/questions/1036441/ubuntu-18-04-gnome-shell-high-cpu-usage) – Pablo Bianchi Jan 14 '19 at 19:02
  • @PabloBianchi as I stated in the first sentence of the post I am aware of the referred question. However my problem does not match any of the answers and is different in detail – v.tralala Jan 15 '19 at 16:54
  • In both cases is not clear the source of the CPU usage by gnome-shell process. FMPV they are the same question. If **current** answers do not satisfy your case is not enough reason to create another question. BTW you are asking several questions which is not a good practice. – Pablo Bianchi Jan 15 '19 at 21:35

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