Исходное сообщение
"Релиз рабочего стола KDE Plasma 5.15" Отправлено anonymous, 12-Фев-19 23:01
а вот и ответ нашелся (как всегда после обновления): To the people running Neon: On my system, the 5.15 upgrade marked some packages for removal (via "apt purge --autoremove"). Some of these packages seem actually important. gtk2-engines-pixbuf gtk3-engines-breeze - the Breeze GTK theme xdg-desktop-portal-kde - lets you use the Plasma file dialogs in Firefox plymouth-label - displays the Plasma version under the Neon logon (when rebooting / shutting down the system) fonts-ubuntu If you want to keep the packages, run "sudo apt-mark manual <pkg_name>" for each of them