[arch-general] Permanently allow root access

[piruthiviraj natarajan]

I want to run root X application in a terminal.

[root at archbox ~]# smplayer
smplayer: cannot connect to X server
[root at archbox ~]#


I followed the wiki
https://wiki.archlinux.org/index.php/Running_X_apps_as_root

added  export XAUTHORITY=/home/archie/.Xauthority  to /etc/profile.

After this I am not able to login with my user account archie through gdm.
Deleting the added line to /etc/profile let me log back in.
How can I get  this thing working as I wish?

I definitely don't prefer the method given under temporarily allow root
access as per the wiki page, since in other distribution I can start the X
applications in a root terminal without a hitch. I  would like to start
root X applications in a terminal.