Are your bored with the same old theme in your linux lock screen? Here is a simple tutorial to change your lockscreen wallpaper in Lubuntu/lxde kernels. Pre-requisite: 1. Lubuntu / lxde kernel 2. Wallpaper. My wallpaper is named a.jpg in "/home/pictures/" Let's get 🌟 ted! Step 1: go to your wallpaper location. My wallpaper is in Picture folder. Step 2: click tools -> terminal Step 3: type code: sudo cp a.jpg /usr/share/lubuntu/wallpaper/a.jpg After this, make sure your image is in that directory. "/use/share/lubuntu/wallpaper Step 4: type code: sudo cd /etc/lighdm Step 5: change your "lightdm-gtk-greeter.conf" file. This is the most important step. 1) If you have " vim" installed type: sudo vi lightdm-gtk-greeter.conf and simply change the "background" with your image. 2) if you have " nano" installed type: sudo nano lightdm-gtk-greeter.conf and simply change the "background...