Please provide Ubuntu documentation that refutes this: https://help.ubuntu.com/community/RootSudo
Why, on my fully updated 13.04 system, does pkexec not function?
$ pkexec gedit somefile.txt
No protocol specified
** (gedit:13135): WARNING **: Could not open X display
Cannot open display:
Run '/usr/bin/gedit --help' to see a full list of available command line options
