How can I disable Alt-Tab application switching in Cinnamon when a certain program is open? In System Settings > Keyboard > Shortcuts Tried to disable, click on it to set a new shortcut, then pressing Backspace to set disable that shortcut.
Using gsettings commands The keybindings to switch to another workspace are set in:
gsettings set org.gnome.desktop.wm.keybindings switch-applications  gsettings set org.gnome.desktop.wm.keybindings switch-applications-background 
I have tried these many methods to disable alt+tab key but still not disabled. Maybe I need to set it globally but in ubuntu where alt+tab key values stored, I don't known. Please help me on this.