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How to Change Lock Screen Background Wallpaper in Ubuntu 20.04

Last updated: May 7, 2020

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!

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    9 responses to How to Change Lock Screen Background Wallpaper in Ubuntu 20.04

    1. ax August 20, 2020 at 8:44 pm

      didn’t work for me

    2. Ax August 20, 2020 at 8:54 pm

      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.

    3. sms@ October 25, 2020 at 7:58 pm

      thanks a lot

    4. Yannick Mussche February 8, 2021 at 12:15 pm

      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

    5. Jarrad February 8, 2021 at 10:30 pm

      “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

    6. Luna February 10, 2021 at 10:36 am

      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?

    7. Adi Prasetyo January 20, 2022 at 5:19 pm

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

    8. thomas covenant May 13, 2022 at 3:39 am

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