I used this to gain root user access to the GUI.
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sudo su
startxFine. Works, make my changes...
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exitLogin screen no longer accepts:
Pi user
Pi password
My understand is that .xauthority is now owned by root, and pi can no longer log in.
My understanding is that if I use a terminal (cntrl +alt+f1-f7), type pi user, pi password, then;
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mv .Xauthority .Xauthority.bak
exit
I went and restored backup image, so now I get a 'do over'.
So how do I do this now? Login as root in GUI make my changes to /usr/shared/ via file manager, exit root, and still have pi user work properly?