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    Have you tried -Y instead of -X? Commented Jul 22, 2013 at 11:35
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    Also, make sure you understand the implications of using -Y instead of -X. You may also want to look at xhost. Commented Jul 22, 2013 at 11:36
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    For RedHat/CentOS 7 (at least), you need the xorg-x11-xauth package, as per my answer here: unix.stackexchange.com/questions/138936/… Commented Apr 22, 2016 at 20:12