It’s entirely possible this is not a kicad issue, but a Linux distribution issue.
I’ve just upgraded to Mageia 8 from Mageia 7 and when I open a schematic I get the message:
Could not use OpenGL, falling back to software rendering .
The program is a wee bit laggy. It won’t let me choose Modern Toolset.
Same with PCB layout where the layer selectors do look a bit old fashioned I think.
Anyone know whether this is going to eb a Linux issue or a kicad issue please? If the latter how I might fix it?