Original Source : https://askubuntu.com/questions/333227/type-french-accents-with-us-international-keyboard
Use the keyboard layout called English (international with Alt Gr dead keys). (Do this by going to System Settings > Keyboard > Layout settings, and then add the layout you want with the + button on the bottom.)
This way, the keys to input the characters
', ", `, ~, and ^ become "dead keys" while you hold pressed Alt Gr. After releasing the key combination with Alt Gr,
no characters will be print (hence "dead"), but inserting a letter
afterwards will yield a variation of the base character of the letter,
in accordance with the dead key you pressed before; for example, é, ë, è, ẽ, and ê for e (respectively). (If you have no explicit Alt Gr key, just use the rightmost Alt key.)So in summary, to insert a symbol
- press and hold Alt Gr,
- press the modifier key / key combination; e.g., `,
- release all keys pressed so far, and
- press the base character key; e.g., E for
è.
(Source: this post on french Ubuntu forums.)
