I forgot to mention that
just contains
.. /etc/X11/Xsession

while /etc/X11/xinit/xserverrc
just contains
exec /usr/bin/X11/X -dpi 100 -nolisten tcp

Combined with the information below, I do not understand where is
activated in order to prevent it being activated automatically. I normally
need X and window manager twm or mwm and kde is now an irritating

Following update/upgrade of debian 32 testing/unstable, launches in
rapid sequence X-system and kde.

Because I normally use the X-system for special applications, how to avoid
launching kde automatically?

I was unable to trace the config files
in my home directory. I thought to comment kde there.

Thanks a lot, sometimes one gets confused
francesco pietra

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