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I just ran into this problem connecting to a headless RHEL7 server. You need the xorg-x11-xauth package installed on your host in order for the DISPLAY variable to get set, and to be properly authorized. Hope I saved somebody some time.


Unix represents newlines with the character LF (line feed = \n = ^J = 10 decimal = 012 octal = 0x0a hexadecimal). Windows represents newlines with the two-character sequence CR, LF (CR = carriage return = \r = ^M = 13 decimal = 015 octal = 0x0d hexadecimal). When a Windows text file is processed by a Unix utility, each line thus ends with a spurious CR ...

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