RuntimeError: Failed to initialize OpenGL

[Sjey-Lyn]

Dear author.

Thank you for your awesome work, Have you ever encountered this problem? I have tried this, openai/mujoco-py#187 , but it did not work .

[hu-hy17]

Are you running on a Linux server? I have only tested rendering on Windows platform and it works fine.

[Sjey-Lyn]

yeah, on Ubuntu 20.04

[hu-hy17]

MjViewer seems unable to be created properly on Linux. Offscreen rendering is only available through

img = sim.render(640, 480)

I will make modifications later.
If you want to run the test code as soon as possible, I suggest using the Windows system.

[Sjey-Lyn]

please allow me to ask a few very simple questions. Does the object come off the hand in the early stages of training? Why objects don't fall out of hands(kinematic) in the picture?

[hu-hy17]

The kinematic pose in the picture is not a simulation result. The pose is directly set and then use sim.forward().

[Sjey-Lyn]

Thank you for your response. I wonder if the object tends to slip out of the hand during the early stages of training?

[Moreland-cas]

MjViewer seems unable to be created properly on Linux. Offscreen rendering is only available through

img = sim.render(640, 480)

I will make modifications later. If you want to run the test code as soon as possible, I suggest using the Windows system.

I met the same problem when running eval_handmimic.py on linux, where to use "img = sim.render(640, 480)"

[OuphiLi]

Try using img = viewer.read_pixels(640, 480, depth=False) instead of img = viewer._read_pixels_as_in_window((640, 480))
Before it, I had to export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGLEW.so .
Now I can run it lol.

[Moreland-cas]

Try using img = viewer.read_pixels(640, 480, depth=False) instead of img = viewer._read_pixels_as_in_window((640, 480)) Before it, I had to export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGLEW.so . Now I can run it lol.

Thanks, I will try :)