After having changed the XFCE edition into a KDE, I now have installed the full KDE version to my laptop.
Installation and setup went fine and now I am starting each and every program to see if it functions. So far I have found 1 issue:
K-Menu --> System --> Manage printing
This does not want to start. When started from terminal I see this:
/usr/bin/xdg-open http://localhost:631/ kf5.kio.widgets: KRun(0x555b39a0b710) ERROR (stat): 123 "Could not connect to host localhost: Connection refused."
The same error appears in a window. When I close the window I see this:
QXcbConnection: XCB error: 3 (BadWindow), sequence: 730, resource id: 41984104, major code: 40 (TranslateCoords), minor code: 0
Eighteen is running fine, even on my 7 year old laptop with a simple 2-core Pentium processor, Intel graphics and 4GB of RAM. (http://www.samsung.com/us/computer/pcs/NP-R730-JB02US-specs)
WiFi connects automatically, I’m using a terminal, a browser with 3 TAB’s open and Spotify is playing. No delays, no interruptions, just smooth sailing.