48 lines
2.0 KiB
Markdown
48 lines
2.0 KiB
Markdown
# How to change the GDM theme
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To change the GDM (lock/login screen) theme, you need to replace the system's _default_ GNOME Shell theme.
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## :warning: Cautions :warning:
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- If the replacement fails, your desktop environment will not work properly. So please **be careful** if doing this.
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- When applying this, other third-party GNOME Shell themes would look broken until you restore to the original theme.
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- If GNOME Shell has been updated and restored to the original theme, you will need to install this again.
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> Note: On Arch Linux, you can automatically reinstall the GDM theme by creating a [hook](https://wiki.archlinux.org/index.php/Pacman#Hooks) file. For example, if you use oomox-Dark-compact as your GDM theme, put [this file](https://gist.github.com/looselyrigorous/a1aa931ce48627cc39daccc9253b30c7) in the `/usr/share/libalpm/hooks/` directory.
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## Requirements
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- `glib-compile-resources` — The package name depends on the distro.
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- `glib2` (Arch Linux)
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- `glib2-devel` (Fedora, openSUSE, etc.)
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- `libglib2.0-dev-bin` (Debian, Ubuntu, etc.)
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- `libxml2-utils` — Ubuntu users only.
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## Installation
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1. **Back up** the original theme file first. If you are already using a custom GDM theme, skip this:
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```sh
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sudo cp -av /usr/share/gnome-shell/gnome-shell-theme.gresource{,~}
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```
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2. Select a **GTK** theme to decide which variant to install.
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3. Replace the default theme file:
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```sh
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GTK_THEME=$(gsettings get org.gnome.desktop.interface gtk-theme | sed "s/'//g")
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cd /usr/share/themes/${GTK_THEME}/gnome-shell
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sudo glib-compile-resources --target=/usr/share/gnome-shell/gnome-shell-theme.gresource gnome-shell-theme.gresource.xml
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```
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4. Reload the theme. If you are running GNOME Shell, press <kbd>Alt</kbd> + <kbd>F2</kbd> then type `rt`.
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## Uninstallation
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1. Restore to the original theme file from the backup:
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```sh
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sudo mv -v /usr/share/gnome-shell/gnome-shell-theme.gresource{~,}
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```
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2. Reload the theme. If you are running GNOME Shell, press <kbd>Alt</kbd> + <kbd>F2</kbd> then type `rt`.
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