QXcbConnection : Could not connect to display - Windows10, VirtualBox
Hello,
I have a robot with Jetson Nano and ROS Melodic as master. It is connected to my home network via Wifi. I have a desktop PC with Linux Ubuntu 18.04 and also ROS Melodic running in VirtualBox on Windows 10.
I have edited the bashrc files so that the two machines are connected. For example, I can drive on the robot (master) with /cmd_vel and listen on the desktop PC with
$ rostopic echo /cmd_vel
Q: I want to start a special node :
$ rosrun rqt_robot_steering rqt_robot_steering
Documentation
This should open a small GUI with which I can control the rover. I get the following error message:
QXcbConnection : Could not connect to display
Cound not connect to any X display
I have already searched and found that with this error message it is often necessary to install an X server. Is it the same in my case? Do I have to install it on Windows 10 or on Ubuntu in VirtualBox? Which X server should I use?
Thank you!