[Andreas Fink <afink@xxxxxxxxxxxxx>]

you need to define the DISPLAY variable to point to your X11 display.

the easiest is to start wireshark in a xterm window.

if you "su" to root in this xterm, the DISPLAY has to be set again maybe.

export DISPLAY=127.0.0.1:0.0

(in bash, sh and the like)

should do.

If you get a permission error, then try typing "xhost +" in your X11 application first.

On 01.02.2007, at 05:03, Timothy Barnett wrote:

You are running wireshark with root privileges, aren't you? I get that message if I attempt to run wireshark as a user.

Regards,

On 1/30/07, Kray Mitchell <kraym@xxxxxxxxxxx> wrote:

I am fully new to all this, but I instlaled Wireshark today (full
install) and I already have X11 installed. I am trying to run ANYTHING
in wireshark and I get this error

(wireshark:550): Gtk-WARNING **: cannot open display:

Though the number changes depending on what I try and run. I can get
wireshark -h to work, but that is it, and it is not very helpful to me.
I am just trying to find something so I can find out what is happening
on the network, so I can start learning to find out where bottlenecks
are happening so I can figure out a solution.

Thanks

kray

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