Gnome extension rotates lock screen wallpaper randomly on each lock

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A Brazilian Linux user who switched from distro to distro settled on Ubuntu and wanted the lock screen background to change with every lock, as Windows does. Gnome offered no built-in option for this, and existing extensions only changed the image without rotating it dynamically. He forked an existing extension and, with help from Claude, built Gnome Shell Extension Random Lock Screen BG. The extension can display a single fixed photo, pick randomly from a local folder, or fetch images from Unsplash (with an API key) or Lorem Picsum by default. Because the lock screen cannot make network calls, it caches the next image upon unlocking, with a configurable limit on cached photos.

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