Sorry if this is not the right place for this, but I was just wondering how I can go about changing the Login screen background? - I assume I can just replace an image file somewhere on the file-system?
Also, just so I know does MATE on Ubuntu 14.04 use MDM or GDM?
It’s actually using lightdm-gtk. To change the background for the login change “background =” line in the file “/etc/lightdm/lightdm-gtk-greeter-ubuntu-mate.conf” and make it point to whatever image you want to use (for example: “background = /usr/share/backgrounds/41621_anime_scenery.jpg”). I usually copy the image to “/usr/share/backgrounds” and make sure the permissions give everyone read access at least.
2020 and now the first item in the Control Panel under Administration is "Login Window". Very user friendly.
It shows you the path where the images are coming from if you want to add one of your own. Only catch could be making sure everybody has permission to read the file.
May 2022
Now under UM 22.04
Can't figure how to change login screen background
And there is no item in the Control Panel under Administration named "Login Window"
I've looked through other posts, used a few 'tricks' recommended, but no use.
What is it that I am missing ?
Thanks
W
Zenity is very limited in functions. I prefer Yad dialog.
However Debian still packages ancient gtk2 version of yad,
bullsye having 0.40.0-1, bookworm/sid have 0.40.0-1+b1,
which is binary NMU (Non-maintainer upload) since there is +b suffix at the end.
There is a bug report but not addressed. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=919785
And Ubuntu pulls from Debian.
Current Yad version is 12 on Github. Releases · v1cont/yad · GitHub
Anyway even with such an old version much more can be achieved with yad than zenity.
I totally agree
I like yad , it can do multiple things in a single window, it is indeed a major enhancement compared to zenity.
One step beyond yad is gtkdialog which can be used to build complete graphical interfaces.
It has become abandoned, picked up again, forked at least three times etc. so although it is a pretty good interface for bash scripts, and I really love it, its future is uncertain.
The only reason i reverted to zenity for this hack is the fact that it is already present on every Ubuntu-MATE install so nobody needs to install extra packages to get this running.
I had some thoughts about doing this in gtk/glade + C or wxglade + python but that is a bit much work for what I consider as a temporary stopgap. Also a bit harder to post in the forum.
It would be much less work to revert to the old tried and tested slick-greeter.
been told that the file is included in the default Jammy wallpapers, so if that gets updated, your changes will be lost and image will revert to the original one.