I am trying to get a wallpaper shown over 2 monitors for Ubuntu 18.04 gnome-shell desktop environment. I went to
Adjustment and changed the setting from "Zoom" to "Spanned".
However, the wallpaper appears out of alignment. Below is the outcome from PrintScreen.
In reality, visually the right monitor image is shifted up and you dont' see the 2 black zones.
How can I correct the appearance of the wallpaper? I am using an NVidia graphic card.
The wallpaper is correctly spanned in the gdm login screen. No alignment issue.