I encountered a problem with CONKYs in Ubuntu and uninstalled them. But for some reason, it was still in the start up. So when my computer started up, i saw a white background over the desktop where the conky used to be for a brief moment and it disappeared. It somehow bothered me. So, i was sure that something remained at the ubuntu start up, but the menu wasn’t showing all of them.
So, i stumbled upon this article on Official Ubuntu Help site.
Starting with Ubuntu 12.04 the ‘Startup Applications’ manager now only displays a sub-set of applications to control at startup with the remaining applications being hidden. To make the hidden applications visible in the manager, follow these steps:
Open the terminal by pressing (Ctrl + Alt + t) or searching for “Terminal” in the Unity bar.
Copy and paste the following command into the terminal and press the ‘enter’ key.
sudo sed -i "s/NoDisplay=true/NoDisplay=false/g" /etc/xdg/autostart/*.desktop
If asked you will also have to provide your user account password to perform the command, if asked simply enter your user password and press ‘enter’ again (note: When entering your password, the terminal will not display characters on-screen, such as the asterisk ‘*’, for security reasons).
Close the terminal and now open ‘Startup Applications’ from the power menu or searching for it in the unity bar.
Hidden startup applications will now be displayed in the ‘Startup Applications’ manager as slightly greyed out. You can now continue to edit which programs start upon startup, including any hidden applications.