Warning for Ubuntu users: the theme called "default" in the set-gdm-theme list command output is the default GNOME Shell theme (Adwaita), and not Yaru. Now let's list all the available valid GDM login screen themes: Using gdm-tools to change the GDM3 login screen theme and background imageīefore using gdm-tools to change your GDM login screen or wallpaper, make a backup of the default theme by using: In case you later want to uninstall gdm-tools, use the uninstall.sh script from the cloned GitHub repository. Next, clone the gdm-tools Git repository and install it using: Fedora: sudo dnf install glib2-devel dconf gitįor other Linux distributions you'll need to figure out the package names for GLIB 2.0 (development headers), and dconf-cli, and install them.Debian / Ubuntu / Pop!_OS / other Linux distributions based on Debian or Ubuntu: sudo apt install libglib2.0-dev dconf-cli git.For Arch Linux / Manjaro, you can directly install gdm-tools from AUR.įor other Linux distributions, start by installing the packages required to run these tools (GLib 2.0 and dconf-cli, as well as Git to get the latest code from GitHub):
Let's get started with gdm-tools installing it. GDM-related: How To Change The Default Display Manager (Switch To GDM, LightDM, SDDM, Or LXDM) In Debian, Ubuntu Or Linux Mint However, everything is explained in the gdm-tools man page, so you can check it out after installing this, using man set-gdm-theme, or online here. So when this happens, you'll need to apply the theme again using gdm-tools.Īll this information about the dual backup system, etc., is not available on the gdm-tools GitHub page. It's also worth mentioning that a GNOME Shell update will revert the custom theme you set for the GDM login screen / greeter, to its default (to use a custom GDM theme, the esource file needs to be replaced, and this file is overwritten by GNOME Shell updates). In this regard, gdm-tools is smarter than other such tools, using a dual backup system which should avoid running into issues. The developer recommends using only one tool to change the GDM login screen theme, since each such tool creates a different backup of the original GNOME Shell gresource file. So use it with care and at your own risk! Using the wrong GDM settings may prevent you from logging in to your Linux desktop. It's worth noting that gdm-tools is new, and it probably hasn't been widely tested. To be able to use a GTK theme as your GDM login screen theme, you'll need to make sure the theme is installed in /usr/share/themes and that it contains a gnome-shell subdirectory with a valid GNOME Shell theme (a valid gnome-shell.css file). Not all GTK themes are compatible with GDM.
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