'NoneType' object has no attribute 'glGetError'

[XiaobenLi00]

I try to run the demo in the tutorials, but I find the following problem

I have tried the solutions in facebookresearch/AnimatedDrawings#99 but it sames not work.
Looking forward to your help!

[Vittorio-Caggiano]

can you share what OS and python version?

[XiaobenLi00]

I am using Docker, and my OS is 22.04 LTS

My python version is 3.8

[XiaobenLi00]

I retried but the ipykernel died.

[Vittorio-Caggiano]

we have used docker for the myochallenge (see here) and worked with a very simple setting

can you please share your docker container setup to replicate the issue?

[XiaobenLi00]

I used the docker with cuda11.8_conda3_unbuntu22.0, and create container from it. Actually I can run the test python -m myosuite.tests.test_myo but have problem with headless rendering when use opengl to visualize.

[XiaobenLi00]

And I installed myosuite following the advanced instruction.

[Vittorio-Caggiano]

for our CI test we use

sudo apt-get install -y xvfb x11-xserver-utils
sudo /usr/bin/Xvfb $DISPLAY -screen 0 1280x1024x24 &

did you try that option?

[XiaobenLi00]

I just tried and I got another problem.

[Vittorio-Caggiano]

@XiaobenLi00 did you find a solution? or do you have more info on the issue to help troubleshooting?

[XiaobenLi00]

@XiaobenLi00 did you find a solution? or do you have more info on the issue to help troubleshooting?

Actually I have solved it. I guess there is a library problem with the docker environment I used before, and I tried another docker images. According to my debugging experience, the opengl lib need a backend, e.g., osmesa, egl, glfw... Different backends may need different dependent libraries and need to handle respectively.

Thanks a lot for your reply and consideration!