I have purchased a jetson nano 2gb and did the all steps for installation. When I start the jetson nano after install the ubuntu , there is no nvidia green background displayed on desktop wallpaper. Also, it start with Desktop Env Error for first time after I restart the linux , error wasnt there but my background still pure black.
Also, ubuntu updated itself and still has same issue. I dont know what went wrong really.
Thank you for the comments.