1. Setting > Region & Language > Manage Installed Languages >Update(필요시) 2. Add Korean(Hangul) 3. Ubuntu Software >install [Gnome Tweaks] 4. Tweaks > keyboard &mouse > Overview Shortcut- Additional Layout Options > Korean Hangul/Hanja keys > [Right Alt as Hangul, right Ctrl as Hanja]에 체크 5. 재부팅 6. 우측상단 언어 설정 아이콘> IBusHangul Setup > Hangul Toggle Key > add > type [Right Alt] > Apply & OK https://..