window manager crash

[Rainer Dorsch <ml@bokomoko.de>]

Hi,

I have for one user on a Debian 10 system an issue which looks like a window 
manager crash. I.e. one application (e.g. kmail) is full screen w/o window 
decoration. I can start new apps using the (former) K-menu, they also start 
immediately fullscreen.  It is particularly likely to happen after a switch 
user....

Can anybody advise on how to debug this? Or as a workaround to restart the 
window manager. It seems also the keyboard is dead e.g. no input possible into 
a console on that session (though swtiching to another VTT is still possible 
(Alt+Ctrl+Fx).

If it is too hard to debug, is there a good way to reset all KDE configurations 
for a user? Is 

	mv .kde .kde.old 
	mv .local .local.old
	mv .config .config.old

sufficient? 

Any ideas on less drastic measures are welcome :-)

Thanks
Rainer

-- 
Rainer Dorsch
http://bokomoko.de/