When I run sudo gedit /path/to/some/random/file I get the following error

** (gedit:6262): WARNING **: Command line `dbus-launch --autolaunch=7f8731869e1c690b8205727e0000000a --binary-syntax --close-stderr' exited with non-zero exit status 1: Autolaunch error: X11 initialization failed.

Cannot open display: 

Run 'gedit --help' to see a full list of available command line options.  

Using gksudo doesn't help either which returns

Cannot open display: 

Run 'gedit --help' to see a full list of available command line options.  

Any help guys. I need to have this capability to open files in Gedit as root.

I found this question with the same error but no solution Unable to launch gedit with sudo

EDIT

I found this post in Ubuntu Forums.

These are the instructions:

1. echo $DISPLAY # you'll be needing this value 3 lines below


2. sudo -i # or "su -" on older Slackwares


3. xauth merge ~alien/.Xauthority # use your own username here instead of "alien"


4. export DISPLAY=:0.0 # use the value of DISPLAY you've seen 3 lines before

On coming to command #3, I got this error

xauth: file /root/.Xauthority does not exist

Maybe this new info can shed more light.