Unable to create the rendering window

[LucasMa00]

When I run the commond in the Hello World([Tutorial 1]) on a remote server to tun the subt docker container
sudo ./subt/docker/run.bash osrf/subt-virtual-testbed:latest cave_circuit.ign worldName:=simple_cave_01 robotName1:=X1 robotConfig1:=X1_SENSOR_CONFIG_1 circuit:=cave headless:=true,
there is an error:
process[X1/ros_ign_bridge_gpu_lidar-11]: started with pid [760] [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) process[X1/ros_ign_bridge_front_laser_set_rate-12]: started with pid [858] [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) process[X1/ros_ign_bridge_odom-13]: started with pid [890] [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) process[X1/ros_ign_bridge_battery_state-14]: started with pid [920] [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) process[X1/pose_tf_broadcaster-15]: started with pid [951] [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) [Err] [Ogre2RenderEngine.cc:744] Unable to create the rendering window: OGRE EXCEPTION(3:RenderingAPIException): Unable to create a suitable GLXContext in GLXContext::GLXContext at /var/lib/jenkins/workspace/ogre-2.1-debbuilder/repo/RenderSystems/GL3Plus/src/windowing/GLX/OgreGLXContext.cpp (line 61) [Err] [Ogre2RenderEngine.cc:752] Unable to create the rendering window after [11] attempts. [Err] [Ogre2RenderEngine.cc:681] Failed to create dummy render window.

[peci1]

That's expected. The SubT simulator needs a running X server. Your machine shows none. You can try running the simulator inside xvfb to at least make it running with software rendering.

[LucasMa00]

That's expected. The SubT simulator needs a running X server. Your machine shows none. You can try running the simulator inside xvfb to at least make it running with software rendering.

Thank you! I have solved this problem using your sugestion. It really helps me a lot, I can finally use simulator on my GPU server.