Why do I obtain this error: 'Error 'Invalid MIT-MAGIC-COOKIE-1' when I do sudo to lauch MATLAB on a Linux machine in MATLAB (R2012b)?

When I remode desktop to a Linux machine, where MATLAB is installed, I obtain the error:

 Error 'Invalid MIT-MAGIC-COOKIE-1'

Could you help? Thanks!

Answer 1

[MathWorks Support Team]

Please note that we do not support Remote Desktop Connections. But the follwoing quick fix will solve the issue.

The issue is due to XAUTH and/or XHOST when you are trying to be a super-user and make connections through the X server.

The workaround is to execute the following in the terminal, as a normal user:

      xhost local:root

Then sudo to MATLAB.

      sudo matlab

You may want to automate it in a script and create an alias for launching MATLAB as a super-user.