login as "su -" ,not able to open gui-apps

[praka123]

Hello,
I use Sarge 3.1r1 and GNOME.i tried to "su -" and export DISPLAY variable as this:

prakash@sarge:~$ echo $DISPLAY
:0.0
prakash@sarge:~$ su -
Password:
sarge:~# export  DISPLAY=:0.0
sarge:~# gedit
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

(gedit:10259): Gtk-WARNING **: cannot open display:
sarge:~#

what to do now.help appreciated

[hamburger123]

You might want to use sudo instead i.e.,

$ sudo gedit

This works for me on ubuntu.

[praka123]

Thank You.i know with sudo or su logins it works,so how do i add/export so that i can run gui-apps while looged in as "su -".

[Zelmo]

apt-get install sux
Then use sux instead of su to change to root in an X console. Sux will take care of everything.

[praka123]

Thanks.I am already using sux.but plain curious whether we can achieve to open gui's from "su -".

[sbaker25]

You need to use xhost to tell the X server to allow connections from other users. You can get info on this by typing "man xhost". Typing "xhost +" will allow anybody to connect. You need to do this BEFORE typing "su -", i.e. in the context of the user that started the X session.