Resolve the error: "Can't open display when trying to display NC jobs on submit host" (NetworkComputer)

To enable NC jobs to display on the submit host's screen, perform the following steps:

1. Execute xhost + on the submit host. This will permit remote clients to connect.

2. Use the 'ps' command. The X-windows server on the submit host must accept TCP client connections. It is not started with the -nolisten TCP option. For example:

% ps auxww | grep 'X'

This will enable you to see the X-server options.

3. If the nolisten option is present, use the gdmsetup or equivalent command, so that X-server permits incoming client TCP connections.

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