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Since your initial setup is a minimal installation, I'll take Ubuntu 14.04.1 Server as the base OS. After installation, all that you get is a command-line prompt without lightdm nor a desktop environment. Open a user session and type the following commands: sudo apt-get update sudo apt-get install lightdm-webkit-greeter --no-install-recommends sudo ...


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It's exactly the same process, except you use a JPG file. LightDM has no problems displaying JPGs.


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The syntax for shutdown from command line is sudo shutdown -P now ## for system POWEROFF sudo shutdown -h now ## for system HALT or POWEROFF If that did not work we can also perform a forced poweroff sudo poweroff --force In case we start the script from a user session (as was the case in a custom session) we can either allow users to shutdown without ...


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First of all I thank the members Takkat and David Foerster for the help. :) The solution I've found: If you have problem like this post, one solution is get the consolekit and insert the following code in your bash script to shutdown the system: /usr/bin/dbus-send --system --print-reply --dest="org.freedesktop.ConsoleKit" ...


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Press Ctrl+alt+F1 then login in to tty1 stop lightdmas sudo stop lightdm You can fall back to by sudo service lightdm start


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Warning: Take your time reading this first sentence: Before typing the following keystroke, remember that Ctrl+Alt+F7 is your friend. This is the keystroke to type to get back to where you are right now. (probably your guest session) OK? Remember? Sure? OK! Now press Ctrl+Alt+F1 to go to TTY1, which is a full screen terminal (and only a terminal: no ...


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Try switching into CLI by pushing ctrl + alt + f1 and see if you can log in that way. From there try switching back to the GUI using startx or lightdm start



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