Ask Your Question

Revision history [back]

You can change the GDM screen background through the console.

su -

su - gdm -s /bin/bash

dbus-launch | sed "s/^/export /"

GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.background picture-uri "file:///usr/share/backgrounds/FILE.JPG"

Where "FILE.JPG" with the picture you want to use as the GDM3 login screen background.

Please note that you must specify a file which user "gdm" has permission to read, that's why I've used file:///usr/share/backgrounds/. For instance, user "gdm" cannot read files in your home directory.

In the same way you can also change the GNOME 3 login screen GTK theme (first 3 commands are the same):

su -

su - gdm -s /bin/bash

dbus-launch | sed "s/^/export /"

GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.interface gtk-theme "THEME_NAME"

Where "THEME_NAME" is the name of the theme, e.g.: "Zukitwo". The themes must be placed under /usr/share/themes/.

Source of article

Answer nº 1 -

su -

xhost +si:localuser:gdm

sudo -u gdm gnome-control-center

Answer nº2 - You can change the GDM screen background through the console.

su -

su - gdm -s /bin/bash

dbus-launch | sed "s/^/export /"

GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.background picture-uri "file:///usr/share/backgrounds/FILE.JPG"

Where "FILE.JPG" with the picture you want to use as the GDM3 login screen background.

Please note that you must specify a file which user "gdm" has permission to read, that's why I've used file:///usr/share/backgrounds/. For instance, user "gdm" cannot read files in your home directory.

In the same way you can also change the GNOME 3 login screen GTK theme (first 3 commands are the same):

su -

su - gdm -s /bin/bash

dbus-launch | sed "s/^/export /"

GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.interface gtk-theme "THEME_NAME"

Where "THEME_NAME" is the name of the theme, e.g.: "Zukitwo". The themes must be placed under /usr/share/themes/.

Source of article

Answer nº 3 - just change the picture in /usr/share/backgrounds/beefy-miracle/default/wide/beefy-miracle.png

Answer nº4 - You can also try a graphical tool called GDM3setup

Answer nº 1 -

su -

xhost +si:localuser:gdm

sudo -u gdm gnome-control-center

Answer nº2 - You can change the GDM screen background through the console.

su -

su - gdm -s /bin/bash

dbus-launch | sed "s/^/export /"

GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.background picture-uri "file:///usr/share/backgrounds/FILE.JPG"

Where "FILE.JPG" with the picture you want to use as the GDM3 login screen background.

Please note that you must specify a file which user "gdm" has permission to read, that's why I've used file:///usr/share/backgrounds/. For instance, user "gdm" cannot read files in your home directory.

In the same way you can also change the GNOME 3 login screen GTK theme (first 3 commands are the same):

su -

su - gdm -s /bin/bash

dbus-launch | sed "s/^/export /"

GSETTINGS_BACKEND=dconf gsettings set org.gnome.desktop.interface gtk-theme "THEME_NAME"

Where "THEME_NAME" is the name of the theme, e.g.: "Zukitwo". The themes must be placed under /usr/share/themes/.

Source of article

Answer nº 3 - just change the picture in /usr/share/backgrounds/beefy-miracle/default/wide/beefy-miracle.png

Answer nº4 - You can also try a graphical tool called GDM3setup

Answer nº 5 - Edit the file /usr/share/backgrounds/spherical-cow/default/spherical-cow.xml

Change the file /usr/share/backgrounds/spherical-cow/default/wide/spherical-cow.png to whatever you want.