Hi, I'm in charge of software packaging for our users at IGBMC. I'm trying to make stereo mode work since we still have several 3D vision sets. Even if that hardware has been retired, it seems that there isn't a more practical solution to 3D visualization ATM. We are going to test how it goes with a VR headset, but it already seems that not being able to look at anything else while using it will be a hindrance. I found a message on that subject dating back to June 2017, but I get the same errors even with the 0.1alpha2 version which seems to match what would have been current at that time : An error occurred in drawing the scene. Redrawing graphics is now stopped to avoid a continuous stream of error messages. To restart graphics use the command "graphics restart" after changing the settings that caused the error. Traceback (most recent call last): File "/usr/lib/ucsf-chimerax/lib/python3.7/site- packages/chimerax/core/updateloop.py", line 73, in draw_new_frame view.draw(check_for_changes = False) File "/usr/lib/ucsf-chimerax/lib/python3.7/site- packages/chimerax/graphics/view.py", line 165, in draw self._draw_scene(camera, drawings) File "/usr/lib/ucsf-chimerax/lib/python3.7/site- packages/chimerax/graphics/view.py", line 205, in _draw_scene camera.set_render_target(vnum, r) File "/usr/lib/ucsf-chimerax/lib/python3.7/site- packages/chimerax/graphics/camera.py", line 442, in set_render_target render.set_stereo_buffer(view_num) File "/usr/lib/ucsf-chimerax/lib/python3.7/site- packages/chimerax/graphics/opengl.py", line 1206, in set_stereo_buffer GL.glDrawBuffer(b) File "src/errorchecker.pyx", line 58, in OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError OpenGL.error.GLError: GLError( err = 1282, description = b'invalid operation', baseOperation = glDrawBuffer, cArguments = (GL_BACK_RIGHT,) ) The host computer runs ubuntu 20.04 with the latest nvidia drivers (455). ChimeraX is deployed through a singularity container based on ubuntu 18.04. I got glxgears and coot running on the same setup (in 0.8.2 since latest coot also has a known bug in hardware stereo rendering as of now) Can anyone make sense of the error above ? I have a programming background so I can have a look but I have no idea where to start. Thanks, J.C. Haessig -- systems administrator, IGBMC