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I installed a program wireshark on my remote linux box and I'm trying to run it with X11 from my mac computer using SSH. Here's my terminal...

macosx$ echo $DISPLAY
/tmp/launch-f4w6k6/:0

macosx$ ssh -X [email protected]
[email protected]'s password: 

remoteubuntu:~# echo $DISPLAY

remoteubuntu:~# wireshark

(wireshark:18927): Gtk-WARNING **: cannot open display:

Here's a few lines from /etc/ssh/sshd_config 

X11Forwarding yes
X11DisplayOffset 10
PrintMotd no
PrintLastLog yes
TCPKeepAlive yes
#UseLogin no

Thanks for the help!

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5 Answers 5

Reset to default
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Try the -Y option for X11 forwarding instead it disables some X11 security checks and tends to work better from OSX.

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  • 4
    In addition to trying -Y, also make sure that your remote system has the xauth binary available: ssh requires that binary in order to successfully set up forwarding.
    – voretaq7
    Apr 29, 2010 at 19:36
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    Actually... the only thing I had to do was install xauth. It works with or without the -Y option now. Thanks!
    – Cal
    Apr 30, 2010 at 2:40
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X11 is not installed in MacOS X Lion. MacOS X Lion users have to install XQuartz for ssh -X or -Y to work.

For reference: About X11 and OS X Mountain Lion

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  • +1 This was the only resource that I could find anywhere that mentioned this, and it was exactly what I needed to solve my problem. When I tried ssh -X -v on my system, xauth did not appear ANYWHERE in the output.... Then I installed XQuartz. One logout/login later, and it all Just Works.
    – user70463
    May 21, 2013 at 22:06
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You don't have an X server running on your local system. Don't use Terminal.app(the one with a black icon) to start your SSH session; instead, use X11.app(the one with a white icon). On my system, it's in /Applications/Utilities/X11.app.

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    If you do ssh -X from the Terminal, it will automatically launch X11.app
    – tegbains
    Apr 29, 2010 at 17:13
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Xnest -geometry 1024x768 :1& DISPLAY=:1 ssh -Y ipoftheserver gnome-session work well !

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Another important thing: if you install xquartz via homebrew, you should relogin your macos or reboot.

As the rackpas's answer saying.

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