I was installing the KDE desktop environment on Linux Mint 18.3 64-bit alongside Cinnamon and Budgie. After installing KDE I rebooted the computer to check KDE out. I logged in to KDE and it displayed the KDE logo on startup but when I got to the desktop it was very slow and buggy on my computer and when I tried to logoff it crashed and I had to hard reboot my computer. When I logged back into Budgie, it seems KDE had serious interference with it, such as the lower panel not appearing and the icons enlarged. I logged into Cinnamon and it was okay at first before crahsing and restarting in Fallback Mode.
I installed KDE on Linux Mint with the following commands:
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sudo add-apt-repository ppa:kubuntu-ppa/backports
sudo apt-get update
sudo apt dist-upgrade
sudo apt-get install kubuntu-desktop
After I added the kubuntu repositories I directly installed the kubuntu-desktop but I stopped the installation at 2% because I forgot to do the second and third commands and after doing those, I resumed with the installation.
I installed Linux Mint 18.3 "Sylvia" 64-bit with the Cinnamon desktop on a physical 10 year old dual-core amd64 computer with 3 gigs of RAM, and when I installed Budgie alongside Cinnamon there was no problems between the two desktop environments before I installed KDE.
Is there a way to safely fix KDE, if not remove it, without affecting my other desktop environments or applications?