I updated today and then after a reboot hibernated. On resuming plasma crashes and now when I boot I get a black screen. Initially the desktop backgound appears but the disappears and the screen goes black. If I do alt-F2 and try kstart plasmashell the same thing happens. I took a quick look in the logs but there is not much apart from a whole load of Qpainter mesages from Plasmashell prior to the core dump.
Anyone any ideas as to what to look for please?
Stuart