Created attachment 130604 [details] System Settings Desktop effects with missing effects For some reasons (perhaps did I trigger something wrong), many Plasma desktop effects (those related to windows, such as blurring, fading, animation when minimising...) do no longer work. There are only very few of them present in System Settings -> Workspace behaviour -> Desktop Effects (see attached screenshot). Furthermore, when I press Alt+Shift+F12, all effects are disabled, but the missing effects in System Settings come back! But they won't work in that state, and are gone again when I press again Alt+Shift+F12 or when I logout and login back. STEPS TO REPRODUCE 1. Open System Settings -> Workspace behaviour -> Desktop Effects 2. 3. OBSERVED RESULT I should see many effects (such as "Desaturate Unresponsive Applications" or "Fading Popups"). EXPECTED RESULT I do not see them. SOFTWARE/OS VERSIONS Arch Linux KDE Plasma Version: 5.19.4 KDE Frameworks Version: 5.72.0 Qt Version: 5.15.0 ADDITIONAL INFORMATION I have another PC with the same exact Software (Arch with Plasma) on which this problem does not occur.
I realized lastly that this weird behaviour only happens when booting on Linux kernel 4.14 LTS. No problems with latest kernel. I suppose it explains the visual limitations. Should this appear somewhere in System Settings, or is using an old kernel with latest KDE soft just an heresy?
Well that's a bit strange though it does make some sense since a newer kernel will have many graphics drives fixes. In general it's always preferable to be using newer software, not older software.