SlackwareThis Forum is for the discussion of Slackware Linux.
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Because you su'ed to root. When you tried to run the program as root it tried to open up another X server while you already had one on that display. Why do you have to run it as root?
I'm using CentOS and I was getting the same error, except when I disabled the network (clicking on the icon in the top right corner and clicking 'disconnect'), it worked fine. But then when I re-enabled the network again, I get the same error.
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