Ubuntu – Ubuntu is in command mode how to turn on the GUI mode again

aticommand linedisplaylauncherlightdm

I have HP Probook 4540s with Radeon graphic card, I downloaded drivers from This site and installed those after reboot I couldnt see my launcher and toolbar but yes i could use few shortkeys, I looked for problem and run that

dconf reset -f /org/compiz/

unity --reset-icons &disown

and this command

sudo apt-get purge fglrx lightdm && sudo apt-get install lightdm ubuntu-desktop

on the terminal, Web Link of the page

after running the last command i restarted and now no GUI comes up its just black command line interface and ask for my user name and password. I have no idea how to get this back to normal
Help !

Best Answer

Try restarting LightDM, should work!

sudo service lightdm start

Enjoy!

EDIT: If that doesn't work try 

sudo service lightdm start
sudo service lightdm stop

or

sudo service lightdm restart
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