Comment 4 for bug 441653

Looking into this matter further i've manged to get the additional info
Fatal server error:
xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call

Please consult the The X.Org Foundation support
  at http://wiki.x.org
 for help.
Please also check the log file at "/var/log/Xorg.3.log" for additional information.

 ddxSigGiveUp: Closing log
debconf: unable to initialize frontend: Dialog
debconf: (TERM is not set, so the dialog frontend is not usable.)
debconf: falling back to frontend: Readline
debconf: unable to initialize frontend: Readline
debconf: (This frontend requires a controlling tty.)
debconf: falling back to frontend: Teletype
Warning: Could not generate /etc/X11/xorg.conf.failsafe for vesa driver