How I can change the GDM 3.6 Wallpaper? I dont mean the desktop background, but the Wallpaper at the login (GDM 3.6).
Thank you for your answer,
I know exactly what you mean. Recently I had installed LightDm, but today I uninstalled it, and replaced it with GDM. Ubuntu-Tweak dont show the login screen appearance button. I think it's because LightDM is currently not installed. Does anyone know where is the folder where the images are stored?