Up until a couple months ago, if I changed my wallpaper/background image, I could choose between tile, zoom, centre, scale, fill or span. These options no longer appear in GUI for changing the background image.
I am using Ubuntu 17.10.
The default GUI option to change wallpaper (accessible from Settings application) offers pretty limited options.
You may use (GNOME) Tweaks to get extra options. To install it first run
sudo apt install gnome-tweak-tool
Then launch Tweaks and go to Desktop section. You'll get options to adjust background and lock screen images.
For Ubuntu 18.04 see this: Desktop section of gnome-tweak-tool missing lock screen options.
This is great help, but in my case I found the setting under Tweak's "Appearance" tab, not Desktop.
protected by Community♦ Apr 9 at 12:29
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