Hi all, first post. Slowly making the transition from Mint... so just like the topic says and I'm sure I'm just missing it in the wallpaper settings, but I'm trying to get images stretched across dual-monitors. Am I missing something? Not a deal-breaker, but it would be nice. Thanks in advance to all who reply.
I personally do not know 
But maybe you must use this
Try and tell us if that help
and
2 Likes
This is usually specific to the desktop environment, so firstly check its wallpaper or desktop background settings.
3 Likes
Go faster.
You have gotten wrong habits, a broken/wrong solution to an XYproblem.
Xorg has always been this way.
You may arrange your external monitors in various places and ways. There is no sane one wallpaper for all my monitors thing.
One that fits for you, is not good for most others.
The normal perspective is “one wallpaper for each monitor”.
Plasma is really good on this.
If you want this stretched unified wallpaper, to fit your own monitors layout, it’s super easy to create it with a graphics program, even with a script to automate it. (imagemagick is Super!!).
3 Likes
I don't think it's that unusual, most DEs have an option to "span" the wallpaper across all monitors, for example:
2 Likes
Thanks Jonathon, you seem to get what I'm talking about. I guess I was simply choosing the wrong word? I'm talking about one wallpaper image which starts from one monitor and continues onto the next. I think most OS's do refer to this as spanning. I did not see this in the settings, but again it's not an essential thing. Just thought I might be missing something.
It's dependent on the desktop environment, so you may have to dig through a load of settings to find it.
You might also find that some DEs don't actually support it... 
2 Likes