Once more sorry for the delay; it was I who was out of order for a while. > "KDE_FORK_SLAVES=1 QT_LOGGING_RULES=*.debug=true dolphin" Yes, I ran that as the root. Running it now as user I see that in /home my user directory plus subdirectories are mounted, but as at this moment /C: and /D: have disappeared and I can only mount them again by rebooting, they are not there. The running wild is the logging of the mouse movement pixels. >"journalctl" executed as your user, i.e. not root. That does refuse to run in Konsole as user (except with -h) because of no permissions. With sudo it of course does, as also in the super user mode terminal, but the info is only about the booting and with --user there are no entries. As I wanted to exclude any possible wrong deviation in the OS, I wiped Leap off and re-installed it completely from new, but there is no difference with before. Just an observation: I practically continuously have files open in Kate and in this way I find out that something is wrong, the moment when I want to save a file on my data disk /D:. If all of a sudden that saving is refused, /D: shows to be unmounted, and then in general also /C: is not mounted anymore, although I have not every time checked that eventual connection. Nevertheless, although in both split windows they do not show up any more, they both continue to show up on the left selection side and right-clicking on them there gives me then still the option to unmount. I do not say that anything with Kate is causal, only that I mostly find out that way; the other way is of course when I want to do a file action on /D: in the file manager.