Qt FATAL: QXcbConnection: Could not connect to display :0
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The Error
$ virtualbox No protocol specified Qt FATAL: QXcbConnection: Could not connect to display :0 Aborted (core dumped)
The solution
This is related to another post. Follow this first and this should work.xauth: timeout in locking authority file /home/Xuser/.Xauthority
Link: https://www.lightnetics.com/post/1204
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