I am using IntelliJ Idea 2017.3 latest release in Ubuntu 2017.10 and shortcut Ctrl+Alt+Left/Right doesn\'t work.
Whereas from
For Linux Mint Cinnamon, the default workspace switching keybinding that interferes with IntelliJ keybinding can be changed with the following :
Disable:
gsettings set org.cinnamon.desktop.keybindings.wm switch-to-workspace-left "@as []"
gsettings set org.cinnamon.desktop.keybindings.wm switch-to-workspace-right "@as []"
Reset to defaults:
gsettings reset org.cinnamon.desktop.keybindings.wm switch-to-workspace-left
gsettings reset org.cinnamon.desktop.keybindings.wm switch-to-workspace-right
Thanks @László for the Ubuntu Gnome hint.