Created attachment 133381 [details] plasmashell starting console output plasmashell starts with too many warning-level debug outputs. Most notable since Plasma 5.20.x series is: kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated kf.plasma.core: findInCache with a lastModified timestamp of 0 is deprecated which is triggered each time the mouse pointer hovers Icon and items in taskbar panel, like Shortcut to Application pinned in panel, even in icon-only-taskmanager. This introduces lags in overall impression. Added a text file when you trigger "plasmashell --replace &" in a Terminal (Konsole). As you can see below, my system is particular fast but as I use a classical old-like hard-drive (and not a SSD) to my /var partition, I can listen write access each time my mouse is moved in Plasmashell. That's not a good solution in the long term. I could set this environment variable in /etc/environment: QT_LOGGING_RULES='*=false' But this not a satisfactory situation. SOFTWARE/OS VERSIONS Operating System: Mageia 8 KDE Plasma Version: 5.20.3 KDE Frameworks Version: 5.75.0 Qt Version: 5.15.1 Kernel Version: 5.9.8-desktop-1.mga8 OS Type: 64-bit Processors: 4 × Intel® Core™ i5-6600K CPU @ 3.50GHz Memory: 15.6 Gio of RAM Graphics Processor: GeForce GTX 1660 Ti/PCIe/SSE2
In facts, removing KDE/Plasma related contents inside ~/.cache, ~/.config, ~/.kde resolve the issue here. I really don't know where exactly as I used great means... Leaving this opened, as long as our Mageia users don't have migrated from Mageia 7 (Plasma 5.15) to Mageia 8 (Plasma 5.20.4).
Ah yes, this was fixed in a recent KF version, IIRC. You can keep tracking the issue particular to your distro in a Mageia-specific bug tracker.