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I'm using bpy python module in Ubuntu 20.04, I try to render picture using engine='BLENDER_EEVEE' engine as shown below.

bpy.context.scene.render.engine = 'BLENDER_EEVEE'
#bpy.context.space_data.params.filename = "test4.png"
bpy.context.scene.render.filepath = self.img_body
bpy.context.scene.render.image_settings.file_format = 'PNG'
bpy.ops.render.render(write_still=True)

Then I got the following error

Unable to find 'wl_proxy_marshal_flags' in 'libwayland-client.so.0'.

However, when I set engine='CYCLES', it worked fine, but it took too much time. I searched for a long time but didn't find a proper answer to fix this problem.

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  • $\begingroup$ what blender version are you using? try using the latest version 3.6. $\endgroup$
    – Harry McKenzie ♦
    Commented Sep 18, 2023 at 4:13
  • $\begingroup$ I don't use the blender application, only the python module 'bpy' version 3.6.0. $\endgroup$
    – Jin Gordon
    Commented Sep 18, 2023 at 6:19
  • $\begingroup$ how did you install the bpy module? pip? $\endgroup$
    – Harry McKenzie ♦
    Commented Sep 18, 2023 at 8:04
  • $\begingroup$ yes, and I tried 3.4.0, 3.5.0 and 3.60. All of them didn't work. $\endgroup$
    – Jin Gordon
    Commented Sep 18, 2023 at 8:20

1 Answer 1

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Same thing happened to me.

The error Unable to find 'wl_proxy_marshal_flags' in 'libwayland-client.so.0'. occured because on Ubuntu 20.04, libwayland-client0 version is 1.18, and wl_proxy_marshal_flags is introduced in version 1.20, which can not be accessed on Ubuntu 20.04, you can only have libwayland-client0 version 1.20 on Ubuntu 22.04.

So a quick solution to this problem is to upgrade your Ubuntu to a newer version such as 22.04. If upgrade OS is not an option then I guess you can try to compile libwayland-client0 1.20 from source.

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  • $\begingroup$ Wow, thanks! I add "apt-get install libegl1" in the Dockerfile, which solves the problem. But I'll try your method later. $\endgroup$
    – Jin Gordon
    Commented Nov 7, 2023 at 8:17

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