Error Message: Client Is Not Authorized to Connect to Server

Cause

If you are running a VNC* session as a standard user, but trying to launch a graphical application for GPU analysis as a root user, you may get a system error message: 'Client is not authorized to connect to Server' because, by default, and for security reasons, root cannot connect to a non-root user's X Server.

Solution

You may permanently allow root access applying any of the two proposed methods.

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