understanding the "export DISPLAY=:0" command
Often in case there are multiple graphics cards in the system and only one of the cards is detected, executing the "export DISPLAY=:0" command helps. In case of bash, export is the shell built-in which exports the variable DISPLAY:

root@debian64:~# echo $DISPLAY

As I understand, DISPLAY variable is used by X. However, what does this :0 mean? I mean how does this change the behavior of the X server?

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understanding the "export DISPLAY=:0" command - by m4rtin - 01-20-2013, 05:51 AM