Common left panel (launcher) is disable too.
I think i should reset settings. How can i do it? PS i can start terminal.
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If CTRL+ALT+T is not working (doesn't open a Terminal), try this:
Right click & add a folder, click on the folder to open the File Manager, go to /usr/share/applications, from there you can start CompizConfig & enable the Unity plugin.
Source (Thanks @Raja)