Gene Heskett via tde-users wrote:

> Which does little to actually instruct me how to proceed.
> And /home/amanda/ICEauthority is an empty file.
> -rw------- �1 amanda backup � � � �0 Mar 12 �2008 .ICEauthority
> created in 2008, while /home/gene/.ICEauthority is
> -rw------- 1 gene gene 4300 Dec �3 01:41 /home/gene/.ICEauthority
> not an empty file. Must be 2 dozen MIT_MAGIC-COOKIES in it. �And I'm in
> way over my head...

Gene, the way might be too steep to climb. I had a command at hand that
helped me execute application from different user, but it was
regarding .Xauthority.

What you are looking into is the .ICEauthority as described briefly here

The Inter-Client Exchange (ICE) Protocol implemented by the Inter-Client
Exchange Library for direct communication between X11 clients uses the same
MIT-MAGIC-COOKIE-1 authentication method, but has its own iceauth utility
for accessing its own .ICEauthority file, the location of which can be
overridden with the environment variable ICEAUTHORITY. ICE is used, for
example, by DCOP and the X Session Management protocol (XSMP). 

https://en.wikipedia.org/wiki/X_Window_authorization

I wonder if you can just stop the process like
        kill -STOP <pid>
and then resume it after you finish
        kill -CONT <pid>