Hello guys,

I've searched the board, but could not find anything related to my problem...

When I open my Home folder with Dolphin, I right click a random folder, the option 'Open with' shows 'Files' (being nemo) or 'Other application'.
When I click on 'Files' to open that (random) folder, the folder opens, but Nemo instantly takes over the desktop as well; background is set to black, even when I close Nemo again... I have to logout and login again to get my desktop back in place...

I can hardly imagine this is 'normal behaviour' for my KDE Neon Plasma 5.13, with Xenial as base...

Anybody has a (constructive) suggestion?
Thanks.

Uninstall nemo?

Or not use Nemo as the default file manager, which somehow took over from Neon's default Dolphin.

You can use System Setting to change this back to Dolphin, or from the right-click menu , use "open with" then Other, and select or type in Dolphin. I believe this also asks to make this the default program to use.

I am going to guess that Nemo is loading or trying to load Cinnamon or whatever desktop environment you have added to Neon, as Neon does not come with it. If you added Neon to an existing 16.04 based distro, well this sort of thing happens with clashing desktops, and is "normal" in this type of non-standard setup.

I know Nautilus (which Nemo forked from) has the option (on by default) to provide the desktop background (complete with wallpaper and desktop icons support): when you launch Nautilus, if it hasn't already started its desktop background window then it will do that. It has a CLI flag --no-desktop which tells it not to do that. (A recent version of Nautilus finally fixed that default behavior)

It should just be a matter of updating the Nemo application shortcut to launch Nemo with the --no-desktop CLI flag.

If it has created that desktop background window and you want to get rid of it, open a process manager (ctrl+esc, or open KSysGuard) and find and kill any Nemo (or Nautilus) processes.

On the other hand, as claydoh alluded to, why use Nemo (or any other file manager) when you're already using Dolphin? Is there something Nemo provides that Dolphin doesn't?

Guys,

Thanks for all the valuable answers!

I'm afraid, like ... so often in the Linux (distro) world; you see a nice picture program in the 'Discover List'; you install it, and if for example when the program happens to be a 'Gnome application' you get the rest of the distro (Cinnamon) installed for free alongside it...
I noticed the evening of my post, that on my SDDM login screen (bottom left) I had a notion of 'choosing a distro / shell; I was all amazed, clicked it open and there was another option .....Cinnamon! ...

As I am really freakin* pleased with KDE Neon Plasma 5.13.3 like it is, I removed --purged Cinnamon, rebooted... and the 'Files' (Nemo) option was gone too.

Shame that when you install a nice application, be it for another desktop shell, the whole (other) shell installs with the application....

Problem solved!
Thanks again guys!

That would depend on what exactly you are installing or uninstalling. For the most part, specific applications should be self-contained such that installing one application only pulls in the application itself (possibly plus required shared library packages).

Some packages that you can install declare that they depend on other applications which need to be installed in order to fully operate; for example installing the Cinnamon desktop requires a number of associated components including the Nemo file manager. In such a case uninstalling the first package will usually uninstall all of the dependent packages (that you hadn't explicitly installed before). However, if you wanted to you could separately install the Nemo file manager and it should only pull in the file manager itself (and required libraries).
Also, it doesn't hurt to have multiple desktop environments installed and try out different things. Even after you've picked one as your primary, day-to-day desktop, it's still useful to keep others around in case something happens and your primary desktop becomes unusable, you can still log in to the other desktop(s) and use that to diagnose and fix things.