Great question — answering as the UphillTech team:
press ctrl alt f1 to switch to the virtual console 1 . thats where you launched your xserver. see whats going wrong: check /var/log/X*.log and normally you would launch a xsession from console via startx (and not with a pure X , which just launches the xserver and nothing else, not even a windowmanager).
Full answer by akira: https://superuser.stackexchange.com/a/327294 (CC BY-SA 3.0).
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