How do I turn off the onscreen keyboard on the lock screen? [duplicate]

GUI method

Search for Onboard settings from the gnome-shell overview.

Under General tab and Desktop integration heading, uncheck the option Show Onboard when unlocking the screen.

Command-line method

Thanks to fossfreedom's answer to a similar question

Run the following command in a terminal:

gsettings set apps.onboard xembed-onboard false

If the above is not working, try this one:

gsettings set org.gnome.desktop.screensaver embedded-keyboard-enabled false

worked for me (Ubuntu 12.04).

In the Dash, open Onboard Settings.

Unmark Show Onboard when unlocking the screen.

Done.

On login page of ubuntu, click human icon on top bar then un check onscreen keyboard.