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System Access System Access I cannot start a remote X application, because I get the "X Error: BadAtom (invalid Atom parameter)" message. Login [Modified Friday, Mar 31st 2006 by andrej] I cannot start a remote X application. I am remotely logged in to Unix server from my linux home laptop/Desktop. When I start an X (graphical) application I get error: [murtaza@acadie ~]$ xv X Error: BadAtom (invalid Atom parameter) Major Opcode: 20 The problem is untrusted X11Forwarding .To override untrusted X11Forwarding by passing -Y to ssh in place of -X. The -Y does the same thing as -X, but it enables trusted X11Forwarding for the current connection. Before establishing the ssh connection the xserver must be started and the environment variable DISPLAY must be set for ssh. $ DISPLAY=localhost:0.0 $ export DISPLAY $ ssh -Y remotehost