Hi!
Recently, I got a reconditioned Dell Latitude E6510 laptop. Installed Mageia 7.1 without issue, changed the display manager to SDDM from GDM, as I just find it easier to work with, and I primarily use Plasma as my desktop. I performed the full system update including the recent qt5 update. Upon boot, the SDDM screen is blank, so resetting the DM to GDM allows me to log into the system. Any attempt to start Plasma leads to a dialog stating that kwin has become unstable and asks to switch to openbox, which also doesn't open.
Any help to troubleshoot this and possibly file a useful bug report will be greatly appreciated.
Bill