None of the authentication protocols specified are supported

Ritratto di jdaemon

In Unix-like systems, if you try to start a graphical application as no "session manager" executor root/user in pseudo-terminal and it returns the following output:
Failed to connect to the session manager: None of the authentication protocols specified are supported
or
Warning: Tried to connect to session manager, None of the authentication protocols specified are supported

It may be required a login shell ...

If program should be run by a sudoer user then open a terminal and feed it to the sudo command:

$ sudo myGUIprogram

otherwise try restarting the program after you login with:

$ su --login [root|user]
or even
$ su - [user]

The "-" option provides an environment similar to root logged directly.