The background-size property specifies the size of the background image.

The background-size property specifies the size of the background images. There are three keywords you can use with this property: auto: The background image is displayed in its original size; cover: Resize the background image to cover the entire container, even if it has to stretch the image or cut a little bit off one of the edges; contain: Resize the background image to make sure the image is fully visible. It overrides the value defined in the default style sheet.

  • Type: dconf

  • Key: /com/ubuntu/login-screen/background-size

  • Default: ‘default’

Note: default system value is used for “Not Configured” and enforced if “Disabled”.

Supported on Ubuntu 20.04, 22.04, 24.04, 24.10.

Valid values

  • default

  • auto

  • cover

  • contain

Metadata

Element

Value

Location

Computer Policies -> Ubuntu -> Login Screen -> Interface -> The background-size property specifies the size of the background image.

Registry Key

Software\Policies\Ubuntu\gdm\dconf\com\ubuntu\login-screen\background-size

Element type

dropdownList

Class:

Machine