cancel autohide launcher panel on Ubuntu Unity 2D

I take this from gere: http://pingvinus.ru/note/unity-2d-launcher-autohide

1) installing dconf:

sudo apt-get install dconf-tools

2) list of available options:

dconf list /com/canonical/unity -2d/launcher/

in result:

hide-mode
super-key-enable
use-strut

3) always show panel (set use-strut=true):

dconf write /com/canonical/unity-2d/launcher/use-strut true

4) logout - login for show panel

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restore autohide:

dconf write /com/canonical/unity-2d/launcher/use-strut 0