How to launch GUI app (in Ctrl+Alt+F7) from tty (Ctrl+Alt+F1-F6)
Solution 1:
You can specify DISPLAY environment to specify display for launching apps (see Graphical Environment) as follows from tty:
DISPLAY=:0 <app-command>
Example:
DISPLAY=:0 gedit
DISPLAY=:0 gnome-terminal
This will launch GUI applications in GUI mode (Ctrl+Alt+F7) from tty (Ctrl+Alt+F1-F6).