When I type Ctrl+Alt+s on a window, the body of the window rolls up. How can I disable this shortcut, that I want to use for another purpose in my emacs configuration?
You can change it in System Settings → Keyboards → Shortcuts → Windows.
It works in Ubuntu 13.04 and 14.04 LTS.
Go to System-settings -> Keyboard (menu) -> Shortcuts (button) -> Windows (tab) and then select
Toggle-shaded-state and press
backspace to disable it, and close the window.