remove account name(to delete the corresponding account) an autologin group to which the created guest account must be added (cf. /etc/pam.d/lightdm-autologin) There are two AUR packages that enable guest sessions in lightdm: lightdm-guest AUR which provides the (largely unmodified) upstream guest-session script as well as lightdm itself. So no special steps were necessary for i3 to work (and I didn't even need to remove KDE). One caveat is that KDE is a *desktop environment*, while i3 is only a window manager. So KDE includes its own window manager, but also many more desktop applications (including things that run in the background). Some of these continue to be active in i3 The fix is to remove the theme - then Discover doesn't complain that it can't update it. First do: flatpak remove --unused This appears to at least list the unused flatpaks. It also complains that "Flatpak system operation Uninstall not allowed for user". But you can remove them one-by-one, for example : flatpak remove org.gtk.Gtk3theme.Breeze This removed everything baloo without removing dolphin, plasma, kde. I was having screen lockups and the baloo_file indexer taking 112% cpu--I lost work rebooting because I could not even move into a terminal window and kill baloo_file. I use KDE Plasma on Arch. I want to remove the tools (all kind of qt something) under Development. But when I tried to remove it (yay -R qt5-tools), it said plasma-workspace: removing qt5-tools breaks dependency 'qt5-tools'. In KDE Neon I don't see these development tools but Plasma still works fine. MX Linux is a desktop distribution based on Debian's "Stable" branch, it's a mid-weight operating system designed to combine an elegant and efficient desktop with simple configuration, high stability, solid performance and medium-sized footprint. It uses Xfce as the default desktop, but it has a separate KDE Plasma edition available. Install plasma-desktop package. This guide let you learn how to install plasma-desktop package: sudo apt update. sudo apt install plasma-desktop. 2. Uninstall / Remove plasma-desktop package. This guide covers the steps necessary to uninstall plasma-desktop package: sudo apt remove plasma-desktop. sudo apt autoclean && sudo apt autoremove. Code: Select all. # aptitude -s remove plasma-discover The following packages will be REMOVED: gir1.2-packagekitglib-1.0 {u} plasma-discover plasma-discover-common {u} python3-software-properties {u} software-properties-common {u} software-properties-kde {u} unattended-upgrades {u} 0 packages upgraded, 0 newly installed, 7 to remove and 13 not NM0I.