https://bugs.kde.org/show_bug.cgi?id=360841
--- Comment #18 from Mateusz <matt.drza...@gmail.com> --- I run some tests and here are results. Dell monitor is connected via HDMI cable. Rebooted few times to make sure it's working or not working. OK means that effects are working. #Laptop Screen #Primary: Laptop Screen: OK #Primary: No Primary Screen: OK #Laptop Screen + Dell monitor #Primary: Laptop Screen: OK #Primary: Dell Monitor: OK #Primary: No Primary Screen: OK #Dell monitor #Primary: Dell Monitor: OK #Primary: No Primary Screen: OK I found a way to replicate this bug(It's clearly a bug;)) Each time I change display settings from 2 display setup to one display, doesn't matter if it's laptop display or Dell monitor, those effects stop working. I have to reboot to make them working again. Plus sometimes I have this feeling that after some time they just stop working, because everything works fine just after reboot. When the effects stop working, changing display settings to 2 display setup makes them working again. Again, changing back to one display makes them not working, again. Do you have any idea how to investigate further? -- You are receiving this mail because: You are watching all bug changes.