Hmm, gnome-shell is mostly single threaded so it shouldn't be able to
use "all cores". It should saturate only one core at most.
Please provide a screenshot of 'top' running in a Terminal window,
showing that gnome-shell (or anything) is using the CPU.
** Tags added: eoan performance
** Also affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Changed in: gnome-shell (Ubuntu)
Status: New => Incomplete
** Changed in: mutter (Ubuntu)
Status: New => Incomplete
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-shell in Ubuntu.
https://bugs.launchpad.net/bugs/1850874
Title:
gnome-shell 100% CPU usage on all cores when animated gif is displayed
Status in gnome-shell package in Ubuntu:
Incomplete
Status in mutter package in Ubuntu:
Incomplete
Bug description:
This started to happen with Ubuntu 19.10.
When an animated gif is displayed in a browser, gnome-shell begins
using 100% CPU on all cores.
To reproduce:
1) open Firefox, or Chromium
2) load an URL where an animated gif is displayed - you can also use
this direct link to https://i.stack.imgur.com/h6viz.gif
3) gnome-shell will start using 100% CPU on all cores (as long as
Firefox/Chromium window is in the foreground)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1850874/+subscriptions
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