NB100-11R: Wlan Authentication has no problem with Ubuntu installed

On my Toshiba NB 100 - 11R, Ubuntu is installed.
Ideally, I would like to browse the Internet and clicked on network connections.
All fields were dark and the click of a button down came the following error message:
Authentication failed!

What can I do?
I had turned on the modem wireless and also in my laptop.

If no one can help you here try to ask for help on some Ubunty forum.
I hope that you will be able to find the solution so be nice and post it here.

This info can be useful for other owners of Toshiba laptops and Ubuntu users.

Tags: Toshiba

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