I am currently trying to make an autonomous drone using the Robot Operating System (ROS). To do this, I have installed Raspbian Lite (Jessie) on a Rasperry Pi 3 and am currently using ROS Kinetic on it. Because it is Raspbian Lite, there were no window managers or desktop environments that came along with the installation. I decided to go with Openbox Window Manager and installed a terminal onto it for convenience. I can just call
sudo startx, and the window manager opens up, which can be accesed by
Ctrl + alt + F2. Since it is a system-wide terminal, I have also installed tmux for convenience. I am running the xserver on a particular pane and conduct my ROS work on other panes.
Now when I try to run commands that call on a GUI application from my system-wide terminal, I get the error:
QxcbConnection: Could not connect to display Aborted
Now there are two ways to approach this problem:
Since there is a terminal installed in my Window Manager, I should get ROS working on this? However, I do not know how to change the environment of the terminal emulator inside the window manager so that it is the same as the one on the system-wide terminal. Is it as easy as changing shells?
Actually find a way to send my GUI applications to the tmux pane that is currently running the command
sudo startx. How do I switch the parent of a process with another parent?
NOTE: I definitely would prefer the second solution, as it is more elegant and efficient for my workflow.