How do I exit X in Linux? To exit X, click on an unused part of the desktop and a pop-up menu will appear. From the menu, select the Exit, Logout, or Quit menu item. X shuts down, returning you to the familiar text-based interface of the Linux shell prompt.
How do I turn off X server? In Windowed mode: Press Alt-F4 to shutdown the X Server.
What is X on Ubuntu? The X Window System (aka X11) is a client/server network protocol that’s been used for decades on a variety of different hardware platforms. It has been implemented by a number of different vendors for a wide variety of hardware platforms. In Ubuntu, we ship X11 as implemented by the X.org project on Linux.
How do I start X in Ubuntu? Boot into a text screen and use startx
If your Ubuntu system boots into a text screen, for example a minimal system or a server system, you can use startx to start xserver (and a simple window manager like openbox or fluxbox or a desktop environment like gnome, kde, lxde, xfce).