Is there a keyboard shortcut to minimize all windows, like Super+M on Windows?
For 10.10, 13.10 and 17.10
Super+D is the default keyboard shortcut for minimizing all windows in Ubuntu 10.10.
You can change it to Super+M like it is in Windows using the Keyboard Shortcuts utility:
System ➜ Preferences ➜ Keyboard Shortcuts
Note: The keyboard shortcut Super+M is used by both the Messaging Menu (see this question for a solution) and the Negative Compiz plugin (You can disable or change its keyboard shortcuts by using