I have tried to set my desktop background several times now with different photos and none of them ever get set.
So, just to go trhough what I do:
First, I find a photo online that I would like as my desktop back ground.
Then I right-click on the photo.
Then scroll down to ‘Set As Desktop Background’ and click it.
It will bring up the Set Desktop Background Preview window.
Then select Stretch and click the button, ‘Set Desktop Background’.
But nothing ever happens.
How can this be fixed?
I did find another way to set a background, though I want things to work the way they’re suppose to.
The reason is that KDE will support to set a wallpaper globally within the next versions, then programs like firefox could be made compatible with it. Right now Firefox is not KDE native and therefore the wallpaper option works only in GTK-environments.