dconf-editor
change "switch-group" from ['<Alt>Above_Tab'] to ['<Super>Above_Tab']
then logoff, logon
- org/cinnamon/muffin/keybindings
- org/gnome/desktop/wm/keybindings
change "switch-group" from ['<Alt>Above_Tab'] to ['<Super>Above_Tab']
then logoff, logon