I am aware I can use 'autostart' package.
However there are certain programs (e.g. 2 windows of Dolphin) which start automatically despite they're not in autostart.
Also, certain program fail to run effectively blocking others (as explained at https://unix.stackexchange.com/questions/244462/why-does-linux-mint-17-2-ubuntu-14-04-based-kde-occasionally-fails-to-autost ).
So, how do I manage manually which programs should run on Linux Mint (17.2 in my case) startup?