Ubuntu
xserver-xorg-video-ati package

  1. Bug #1879042
  2. Comment #5

Comment 5 for bug 1879042

Revision history for this message
David Santinoli (dav9o) wrote : Re: [radeon] Xorg high CPU usage and stuttering on ubuntu 20.04

> 1. Is the high CPU usage sustained when you're not doing anything?

No.

> 2. Is the CPU usage only when using a mouse, or does it also occur when using a keyboard?

In both cases. For example, Xorg's CPU usage jumps to 85% on my machine when I continuously switch once per second from one terminal window to another, regardless of the means (mouse or ALT+TAB).

On the other hand, merely typing (albeit fast) into a terminal window leads to a much lesser usage by Xorg (around 10%).