• Hit Ctrl+Alt+F1 at the blank screen to get you to a non-X terminal (tty1)
  • Login in with your username and password
  • Change to root with: sudo -i and enter your password
  • mkdir -p /run /run/lock
  • rm -rf /var/run /var/lock
  • ln -s /run /var
  • ln -s /run/lock /var
  • reboot