https://bugs.kde.org/show_bug.cgi?id=365824
--- Comment #6 from altosch <a...@tosovsky.eu> --- Yes, that was it. I switched to OpenGL 2 and the problem is gone. The setting is here: System Settings / Display / Compositor / Rendering backend / OpenGL2.0 Then I wanted to log out and log in to apply change but Plasma got frozen (just black screen and mouse cursor) so I had to restart the sddm service from console. Thank you for your help. -- You are receiving this mail because: You are watching all bug changes.