How activate automatic spell check in Writer 5.1.4.2

[ENO]

I intend active automatically check spelling in writer in libreoffice Version: 5.1.4.2 (on lubuntu 16.04 LTS). But I following this instruction (Automatically Check Spelling - LibreOffice Help) and I can’t put this option works.

If I write some word with error the software will not advice me about this error.

[anon87010807]

There can be several causes for spell check not working:

1. Corrupt user profile (a folder with customizations). See Frequently asked questions - General - The Document Foundation Wiki - important: rename the folder, don’t delete it. Restart the computer. Change the folder name “user” to “userold”. Start LibreOffice and it should ask for your personal information. If it doesn’t, there was still a LibreOffice process running when you renamed the user profile folder.
2. Auto spell check is turned off. See if the green underlined A button on the toolbar is pressed.
3. You didn’t set a language for your text. Tick View - Status bar. The fourth field from the left displays the language set for the text where the cursor is. Make sure that you have a dictionary for that language. In Format - Character - Font tab, click in the Language box, the list of available languages pops up, languages with a dictionary are preceded by a dotted underlined A (LO 5.2.3, a blue checkmark in OpenOffice), all others by a blank.

Don’t post your questions as a wiki: nobody can improve your question because you are the only one who knows what your problem is about.