Package: libkf5notifications5 Version: 5.54.0-1 On Raspian (armhf), numerous Kstars users have problems due to phonon leaking file descriptors, which is invoked from knotifications, see https://bugs.kde.org/show_bug.cgi?id=444407 Harald Sitter recommending to compile knotifications against Canberra instead.
Original reports see here: https://indilib.org/forum/ekos/10705-kstars-ekos-freezing-on-large-image-sequences-astroberry.html#77529
