bagi kamu pengguna Ubuntu ini ada beberapa shortcut yg mungkin bisa kamu gunakan:
Alt-Ctrl-L Locks the screen.
Alt-Ctrl-L Locks the screen.
Alt-F1 opens the Applications menu, then use the arrow keys to navigate the submenus.
Alt-F2 opens the Run Application dialog box.
Alt-F3 opens the Deskbar Applet (F3 opens the search bar at the bottom of the window).
Alt-F4 closes the current window.
Alt-F5 unmaximizes the current window (if it's maximized, of course).
Alt-F7, followed by arrow keys or mouse movement, adjusts the current window's position.
Alt-F8 resizes the current window.
Alt-F9 minimizes the current window.
Alt-F10 maximizes the current window.
Alt-spacebar opens the window menu.
Alt-Tab moves between open windows.
Ctrl-Alt-Tab moves between open panels on the desktop.
Ctrl-W closes the current window.
Ctrl-Q closes the current application.
semoga membantu..