Comment 3 for bug 728764

trying again it gives

Setting up keyboard-configuration (1.57ubuntu9) ...
No protocol specified
Cannot open display ":0"
dpkg: error processing keyboard-configuration (--configure):
 subprocess installed post-installation script returned error exit status 255
dpkg: dependency problems prevent configuration of console-setup:
 console-setup depends on keyboard-configuration; however:
  Package keyboard-configuration is not configured yet.
dpkg: error processing console-setup (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 keyboard-configuration
 console-setup
E: Sub-process /usr/bin/dpkg returned an error code (1)