Gtk-WARNING **: cannot open display

gonzalo76 · 05-16-2004, 12:35 PM

This time, when I tried to open gedit logged in as root (su)

Code:

bash-2.05b# gedit

appears this error message:

Quote:

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

(gedit:10762): Gtk-WARNING **: cannot open display:

Does anybody know why?

slackwarefan · 05-16-2004, 01:48 PM

Because you su'ed to root. When you tried to run the program as root it tried to open up another X server while you already had one on that display. Why do you have to run it as root?

-Hope this helps.

IBall · 05-16-2004, 07:54 PM

As root, try:
/usr/X11R6/bin/xhost +

This should enable you to connect to the X-display as root

--Ian

gonzalo76 · 05-17-2004, 10:26 AM

Quote:

Originally posted by IBall
As root, try:
/usr/X11R6/bin/xhost +

This should enable you to connect to the X-display as root

--Ian

Thank you, it worked !!!

Kropotkin · 07-25-2005, 02:05 PM

Quote:

Originally posted by IBall
[B]As root, try:
/usr/X11R6/bin/xhost +

Thanks for posting this information. I found while searching on this very problem.

One question: it only works for the current session. I do I make it stick across logins?

TIA

abhax · 11-18-2009, 06:05 AM

Just dun use it when you are root...

use shell> sudo gedit <filename>

witek · 11-18-2009, 06:38 AM

Quote:

Originally Posted by Kropotkin

One question: it only works for the current session. I do I make it stick across logins?
TIA

create .bashrc or .bash_login file in your home directory (if one of them exists just append to it) and add this line to it

Code:

xhost +si:localuser:root

save file and symlink .bashrc to .bash_login or vice-versa. From now on you allow root run X applications

peterlck · 01-25-2011, 09:39 PM

Hi,

I have a problem installing JMeter on a linux

Enterprise Linux Enterprise Linux Server release 5.4 (Carthage)
Red Hat Enterprise Linux Server release 5.4 (Tikanga)

java -version
java version "1.4.2"
gij (GNU libgcj) version 4.1.2 20080704 (Red Hat 4.1.2-46)

[root@<server> bin]# sh jmeter.sh

(.:18532): Gtk-WARNING **: cannot open display:
[root@msdvml62 bin]#

Also I do not have xhost in /usr/X11R6/bin/

Can someone help ?

Richard Cranium · 01-25-2011, 10:18 PM

Quote:

Originally Posted by IBall

As root, try:
/usr/X11R6/bin/xhost +

This should enable you to connect to the X-display as root

--Ian

It also allows anyone else who can reach your machine via tcp/ip to access your keyboard and display. Great for grabbing keystrokes!

peterlck · 01-25-2011, 11:36 PM

Hi Ian,

Thanks for your help, I got the following.

[root@<server> bin]# /usr/X11R6/bin/xhost +
-bash: /usr/X11R6/bin/xhost: No such file or directory
[root@<server> bin]#

Does that mean I am missing some patches?
I am a QA lead actually and got this Linux VM from my administrator.

Googling around seems to suggest that I don't have X System installed in the Linux.

I am wondering if that is the reason why I got the error when running jmeter.sh ?

Hopefully someone have encountered this before and fix it

Cheers
Peter

dive · 01-25-2011, 11:59 PM

Just try the command without the path - ie: xhost +local:

Oh, also that command needs to be run by the normal user who is logged into X, not by root.