How to Change Lock Screen Background Wallpaper in Ubuntu 20.04

gnome shell

The lock screen background option is removed in the settings of Ubuntu 20.04 Gnome desktop. And now it uses blurred desktop wallpaper as the background of lock screen.

Still want to change the lock screen wallpaper? There is a Gnome Shell extension can do the job.

1.) Open terminal by pressing Ctrl+Alt+T on keyboard. When it opens, run command to make sure gir1.2-clutter-1.0 library is installed:

sudo apt install gir1.2-clutter-1.0

2.) Then in web browser go to extensions.gnome.org/extension/1476/unlock-dialog-background/.

Click on the toggle and confirm on the next pop-up to install the extension.

Don’t see the toggle? Do following steps, then refresh the web page.

  • Click the link text “click here to install browser extension” and follow the pop-ups to install the browser extension:

  • Then open terminal via Ctrl+Alt+T and run command:
    sudo apt install chrome-gnome-shell

3.) Launch either Extensions utility or Gnome Tweaks > Extensions (install it via Ubuntu Software), go to the extension settings page, and finally set a picture for lock screen background.

That’s it. Enjoy!

By Ji m

I'm a freelance blogger who started using Ubuntu in 2007 and wishes to share my experiences and some useful tips with Ubuntu beginners and lovers. Please comment to remind me outdated tutorial! And, notify me if you find any typo/grammar/language mistakes. English is not my native language. Contact me via ubuntuhandbook1@gmail.com Buy me a coffee: https://ko-fi.com/ubuntuhandbook1

9 comments

  1. Didn’t work for me. The extensions that pulls up after following your directions only has 3 three options none are about changing the lock screen.

  2. Hey

    This is like, a half explication.

    how to get here:

    3.) Launch either Extensions utility or Gnome Tweaks > Extensions (install it via Ubuntu Software), go to the extension settings page, and finally set a picture for lock screen background.

    thank you for your feedback.

    kr,

    Yannick

  3. “Launch either Extensions utility” where is this? I don’t see this anywhere. I followed the preceding steps. Also Gnome doesn’t appear at all when searching in Ubuntu software

  4. The Lockscreen is only when my Notebook was startet and the first login, then is the Lockscreen active. At first start is it not active. have you a idea?

  5. if you have error in step “click here to install browser extension”, i recommend using chrome browser for install gnome extension

  6. does not work in 21.04, 21.10, 22.04.
    set picture in tweaks. but lock screen is just a blank color.

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