Keyboard shortcut Shift + Ctrl + Escape does not work [duplicate]

Solution 1:

Use CCSM to assign the command and keybinding and it will work in Unity.

To get Compiz Config Setting Manager do the following:

  • Open the Terminal by pressing Ctrl+Alt+T and type:

    sudo apt-get install compizconfig-settings-manager compiz-plugins-extra -y
    
  • Open CCSM
  • Select the commands option
  • Assign the command on line 0

Select the Keybinding tab and assign the hotkeys you like to trigger the command.