Everything was running fine until yesterday when I installed KDE Plasma on my Ubuntu 17.10 desktop. I have a bunch of startup applications which I set to start upon my login. After installing KDE, I restarted my system and changed the desktop environment to Plasma and logged in. All things looked okay. Now today I started my PC and logged in with GNOME set as desktop environment, and no startup applications were started. I logged out and changed the desktop environment to Plasma and again logged in, and startup applications were started. Then again I logged out and logged in with GNOME, none of my startup applications were started. I rebooted and repeated again the things and also tried with other desktop environments.
Problem what I actually found was that the startup applications only start when I log in with Plasma and not with any other Desktop Environments. Now that's very agitating that if you wanna start your session with desktop environment other than plasma, startup applications do not start. Need urgent help. How to fix this problem?