If you have changed to another DE (Desktop Environment) after initially installing the offline edition (XFCE4) or you just decided to move over to your freshly discovered DE, you might want to remove the unused one.
In most cases, this isn’t easy to do, especially when you switch from GTK to QT, or vice-versa, there are still some dependencies you might need.
So I try to give an example here, the best practice is to update your system first:
sudo pacman -Syu
Then install the desired DE. See this article, then reboot into the DE you’ve just installed.
Open the terminal and uninstall the unwanted DE, if it is the default EndeavourOS XFCE4 offline or online install you want to remove, this will work for you:
sudo pacman -Rs xfce4 mousepad orage parole ristretto thunar-archive-plugin thunar-media-tags-plugin xfce4-battery-plugin xfce4-datetime-plugin xfce4-mount-plugin xfce4-netload-plugin xfce4-notifyd xfce4-pulseaudio-plugin xfce4-screensaver xfce4-screenshooter xfce4-taskmanager xfce4-wavelan-plugin xfce4-weather-plugin xfce4-whiskermenu-plugin xfce4-xkb-plugin file-roller network-manager-applet leafpad epdfview galculator endeavouros-xfce4-terminal-colors xdg-user-dirs-gtk
In this stage an error message may occur, in that case, you probably have some additional packages installed you need to remove also, just add them to the list.
Uninstalling Xfce packages like this must be made very carefully, because you may uninstall something that is needed by your new DE (GNOME and Cinnamon which are GTK-based too). If that happens, then you may have to reinstall the new DE packages using the pacman option
--needed to avoid installing already existing packages.
I have created a little repository on my GitHub page with commands to reinstall all DE’s we have on our installer, to make it a little easier.
So choose your new DE and copy paste the command in your Terminal:
In this example I use GNOME:
sudo pacman -S --needed gnome gnome-tweaks nautilus-sendto gnome-nettool gnome-usage adwaita-icon-theme chrome-gnome-shell xdg-user-dirs-gtk
If you like to change your DM, login manager, to the one default for the new DE, in this case, GDM, you can easily change this using the welcome app:
Or if you prefer using the terminal:
sudo systemctl -f enable GDM
To uninstall lightdm:
sudo pacman -R lightdm lightdm-gtk-greeter lightdm-gtk-greeter-settings
Unfortunately, there isn’t a full-proof way to do this, so always take a look at the exact terminal output, and be careful you do not uninstall certain system relevant packages or packages you have installed manually like a preferred browser or other apps.
If you remove an unneeded DE make sure to enable the new DM (LoginManager) before rebooting the system or you will boot into TTY without graphical login like this:
In that case, you will need to enable the DM manually:
sudo systemctl -f enable --now GDM
To get the graphical Login-Manager show up again.
This is only one example of the situation you could run into, but most of the time these steps will be enough for any DE change.
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