i want to visualise lidar data from raspberry (ros lunar), with my remote pc(ros kinetic), i configure the rosmaster and host as explained on wiki.ros. when i run rviz rviz, on my remote pc, i get this: QXcbConnection: Could not connect to display Aborted what does it mean?? can you help me please to solve this!!! the master of my config is the Raspberry , in the bash file i add : export ROSMASTERURI=http://raspberry IP:11311 eport ROSHOSTNAME=raspberry IP export ROS_IP=raspberry IP.

the remote PC bash file: export ROSMASTERURI=http://raspberry IP:11311 eport ROSHOSTNAME=remote pc IP export ROSIP=remote pc IP

when i run Rviz in one machine it works succefully. but when i connect whith ssh to the raspberry, and i run roscore, then roslaunch rplidarros viewrplidar.launch, it doesn't work (no Rviz response).