How to change lock screen background Ubuntu Mate 19.04

echo59 · 21 July 2019 21:31

I've recently installed Ubuntu Mate 19.04.

I've changed the background of my login screen using Control Centre > Login Window and this has changed without any difficulty.

However, I also want to change the lock screen background to match the login wallpaper. Currently it is set to be the same as my desktop wallpaper and I can't seem to be able to amend this, using multiple searches. If I change my desktop wallpaper then the lock screen background changes to match it. Also, the password dialog box is more in the style of lightdm-gtk-greeter and not lightdm-slick-greeter, which I am using.

I did find one page (YouTube video) that spoke about overriding the glib-2.0 schema for Mate 16.04. This didn't work for me, unfortunately.

Also the file /usr/share/backgrounds/ubuntu-mate-common/Ubuntu-Mate-Cold.jpg (also frequently suggested that this is just re-named) doesn't exist in this distro. The background for the lock screen dialog is not unique and currently matches the desktop background. Is there a way to decouple this, so that the lock screen background can be defined separately?

I'd appreciate any thoughts.

desconocido · 24 July 2019 11:14

I can't help with 19.04 but I have successfully done it on 16.04 by following the advice at

github.com/ubuntu-mate/mate-tweak

Change lock screen background

opened 08:19AM - 17 Sep 15 UTC

closed 07:54PM - 28 Jun 17 UTC

flexiondotorg

enhancement minor

Originally reported by: **Martin Wimpress (Bitbucket: [flexiondotorg](https://bi…tbucket.org/flexiondotorg), GitHub: [flexiondotorg](https://github.com/flexiondotorg))** ---------------------------------------- The lock screen runs with elevated privileges, which is the main reason there is not built in means for users to set the lock screen background image. There is potential for a maliciously crafted image to be set as the background image and used to compromise the computer. * Get the users current background from `gsettings`. * Ask the user for the image they want to use on the lock screen. * Create `/usr/share/glib-2.0/schemas/zubuntu-mate-lock-background.gschema.override` that includes a section like this: ``` #!ini [org.mate.background] picture-filename='fullpath-to-lockscreen-image.jpg' ``` * Run `glib-compile-schema /usr/share/glib-2.0/schemas` * Set the users background to what we read from `gsettings` earlier. ---------------------------------------- - Bitbucket: https://bitbucket.org/ubuntu-mate/mate-tweak/issue/4

as amended by

Actually, I notice a new comment in the github link:

No longer required, as MATE Desktop 1.18 does this now.

echo59 · 25 July 2019 20:46

I tried this again and unfortunately it didn't work. MATE Desktop 1.20.4

BitVivAZ · 2 October 2019 17:51

This worked for me, however I'm using the latest dev release but it should still be working for 19.04

https://askubuntu.com/a/1129087