Code working with pandagl but not p3tinydisplay

Scripting Issues
5

Thanks for the help. I finally made it to run on the headless server, but there are a few pitfalls on Ubuntu 16.04. So here are the details if anyone has the same troubles:

  • Copy the xorg.conf to /etc/X11/
  • restart the lightdm server:
systemctl restart lightdm
  • check in /var/log/Xorg.0.log if the configuration is loaded correctly
  • then I got the error “invalid mit-magic-cookie-1 key”. so one has to check the Xauthority:
systemctl status

and search for

lightdm.service

which has a parameter

-auth
  • run the application by passing the environment variables:
DISPLAY=:0 XAUTHORITY=/var/run/lightdm/root/:0 sudo python test.py

(for me the Xorg is started as root)