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:
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?
Code:
root@debian64:~# echo $DISPLAY
:0
root@debian64:~#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?