https://bugs.kde.org/show_bug.cgi?id=387321
--- Comment #3 from Tim Rees <reestr...@gmail.com> --- I also have this issue. Using a Laptop with external display connected, switching the primary display to anything other than the display when was used when KDE started is what causes the issue which results in high CPU load from kwin_x11 and plasmashell. Steps to reproduce: 1. Start KDE on laptop with lid open & external display plugged in (can be either HDMI or displayport), primary display will be the laptop internal display 2. Open System Settings Displays, change primary display to be external display - Observe CPU load increasing for kwin_x11 and plasmashell, takes up to a minute to be noticeable - after a longer course of time the system will be unusable 3.Revert configuration for the primary display to the be laptop display - CPU usage by kwin_x11 and plasmashell will eventually reduce to normal levels Since I normally use the external display with the laptop closed when docked, my current workaround is to disable the laptop display and then start KDE with the external display being the primary display. Using KDE Plasma on Fedora KDE Spin; Plasma version 5.11.4 -- You are receiving this mail because: You are watching all bug changes.
