Debian: cannot connect to X server
English
Quick tip on KDE based Debian:
When you receive the following error when trying to run a X application with sudo:
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kassner@brian:~$ sudo unetbootin
No protocol specified
unetbootin: cannot connect to X server :0
Run the following command and try again:
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kassner@brian:~$ xhost SI:localuser:root
localuser:root being added to access control list