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I have the following issue with CPU on Ubuntu 21.04. It was not the case for me on version 20.10 and previous ones.

When the mouse is moved frequently on my PC I have huge CPU spikes. temp is above 60 C.

gnome-shellprocess loads the CPU.

  • CPU - AMD Ryzen 9 5950X - frequency boost is enabled by default
  • GPU - NVIDIA GP102 [GeForce GTX 1080 Ti] - ZOTAC GeForce® GTX 1080 Mini
  • nvidia-driver-460 (NVIDIA Corporation: GP102[GeForce GTX 1080 Ti]) - proprietary driver is used
  • mouse - Razer Basilisk Ultimate Wireless
  • direct rendering is enabled
  • $ echo $XDG_SESSION_TYPE ==> x11 - Xorg is used by default instead of Wayland as I have NVIDIA on a board.
  • Installed gnome extensions:
$ ls -al ~/.local/share/gnome-shell/extensions
total 16
drwxrwxr-x 4 user user 4096 May 24 07:32 .
drwx------ 4 user user 4096 May 25 18:10 ..
drwxrwxr-x 3 user user 4096 Oct 29  2020 apps-menu@gnome-shell-extensions.gcampax.github.com
drwxrwxr-x 4 user user 4096 Oct 29  2020 auto-move-windows@gnome-shell-extensions.gcampax.github.com

$ ls -al /usr/share/gnome-shell/extensions
total 20
drwxr-xr-x 5 root root 4096 Oct 17  2019 .
drwxr-xr-x 7 root root 4096 May 12 07:30 ..
drwxr-xr-x 2 root root 4096 May 12 07:34 desktop-icons@csoriano
drwxr-xr-x 3 root root 4096 May 12 07:34 ubuntu-appindicators@ubuntu.com
drwxr-xr-x 3 root root 4096 May 12 07:34 ubuntu-dock@ubuntu.com

I tried to reduce mouse poll according to this proposal - XORG - HIGH CPU Usage.

All cases from this answer were tried too - GNOME-SHELL HIGH CPU USAGE.

The only thing that helped was to reload gnome-shell via Alt+F2 -> r. But I need to do it 15 times per day or more in order to disable those CPU spikes.

Could you please advice if it is possible to have a permanent solution for the aforementioned issue so that it won't be necessary to do manual gnome-shell reload all the time.

fuser
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  • Edit your question and show me ls -al ~/.local/share/gnome-shell/extensions and ls -al /usr/share/gnome-shell/extensions. Start comments to me with @heynnema or I'll miss them. – heynnema May 25 '21 at 15:14
  • Hi @heynnema! thanks for reply! I've updated the question. – fuser May 25 '21 at 15:25
  • Go to https://extensions.gnome.org/local/ and temporarily disable apps-menu and auto-move-windows, and restart gnome-shell, and see if there's any improvement. Report back. – heynnema May 25 '21 at 15:32
  • @heynnema I can see: Desktop Icons, Ubuntu AppIndicators, Ubuntu Dock. All of them are disabled and I can't remove them. – fuser May 25 '21 at 15:35
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    I didn't ask you to remove/delete any of them. Just turn off the two I mentioned. – heynnema May 25 '21 at 15:37
  • Also upgrade your Nvidia driver to version 465.27 available at https://www.nvidia.com/en-us/geforce/drivers/ – heynnema May 25 '21 at 15:40
  • Unfortunately all the suggestions above did not help. Only update to ubuntu 21.10 helped to resolve the issue. – fuser Oct 21 '21 at 17:51
  • Same. I changed gnome to kde to fix problem. – Oboroten Jan 04 '22 at 12:00

1 Answers1

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Had the same issue, I'll share this bug report, it helped a lot : bug 1900760

Le NooNz
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