I'm doing a Python course for which I have installed Arch Linux in a VM. When I use Matplotlib.pyplot to plot things (x vs y) I get a bunch of errors. When I turn of 3D support for the VM it simply asks for openGL. My script does create a plot (empty canvas) but without a line. I think it

Disable OpenGL for Python / Matplotlib

I’m doing a Python course for which I have installed Arch Linux in a VM. When I use Matplotlib.pyplot to plot things (x vs y) I get a bunch of errors.

libGL error: pci id for fd 12: 80ee:beef, driver (null)
OpenGL Warning: glFlushVertexArrayRangeNV not found in mesa table
OpenGL Warning: glVertexArrayRangeNV not found in mesa table
OpenGL Warning: glCombinerInputNV not found in mesa table
OpenGL Warning: glCombinerOutputNV not found in mesa table
OpenGL Warning: glCombinerParameterfNV not found in mesa table
OpenGL Warning: glCombinerParameterfvNV not found in mesa table
OpenGL Warning: glCombinerParameteriNV not found in mesa table
OpenGL Warning: glCombinerParameterivNV not found in mesa table
OpenGL Warning: glFinalCombinerInputNV not found in mesa table
OpenGL Warning: glGetCombinerInputParameterfvNV not found in mesa table
OpenGL Warning: glGetCombinerInputParameterivNV not found in mesa table
OpenGL Warning: glGetCombinerOutputParameterfvNV not found in mesa table
OpenGL Warning: glGetCombinerOutputParameterivNV not found in mesa table
OpenGL Warning: glGetFinalCombinerInputParameterfvNV not found in mesa table
OpenGL Warning: glGetFinalCombinerInputParameterivNV not found in mesa table
OpenGL Warning: glDeleteFencesNV not found in mesa table
OpenGL Warning: glFinishFenceNV not found in mesa table
OpenGL Warning: glGenFencesNV not found in mesa table
OpenGL Warning: glGetFenceivNV not found in mesa table
OpenGL Warning: glIsFenceNV not found in mesa table
OpenGL Warning: glSetFenceNV not found in mesa table
OpenGL Warning: glTestFenceNV not found in mesa table
libGL error: core dri or dri2 extension not found
libGL error: failed to load driver: vboxvideo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo
OpenGL Warning: XGetVisualInfo returned 0 visuals for 00007f6ff33d0240
OpenGL Warning: Retry with 0x8002 returned 0 visuals
OpenGL Warning: glXGetFBConfigAttrib for 00007f6ff33d0240, failed to get XVisualInfo

When I turn of 3D support for the VM it simply asks for openGL. My script does create a plot (empty canvas) but without a line.

I think it should be possible to draw some lines without openGL, right? How to go about this…

Edit: I think it was a VirtualBox bug combined with an error in my Python code. I could actually get good graphs with the error messages present in the end. In the latest versions of VirtualBox I’m not getting the error anymore. Thanx for the suggestions.

Answer

so, despite of all the errors, I never had anything not working actually, the fact that I didn’t see graphs was not due to the error in the original post. It was something else, I guess unrelated tot mpl and more related to lack of 3D acceleration in VirtualBox.

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Answer