Hi,



When I am login with the root user in beagle bone black, I can't* export 
display **environmen*t variable and also not able to use* xset  dpms force 
off* command.

I am getting* No protocol specified xset  and   unable to open display 
":0.0" error.*


*But I* am not getting  this error in the with debian login.


Thanks


Regards

Parth 

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