nothing appears in the output

behnamasadi commented 3 years ago

Describe the error

running any of the followings: manimgl code.py or manim-render code.py will give no output and terminals goes to halt state (the curser just blinks)

Code and Error

Code: manimgl code.py Scene flags

Error: nothing appears in the output, the curser just blinks

Environment

OS System: Ubuntu 20 manim version: master conda list: Name Version Build Channel _libgcc_mutex 0.1 main
argparse 1.4.0 pypi_0 pypi backcall 0.2.0 pypi_0 pypi ca-certificates 2021.1.19 h06a4308_0
certifi 2020.12.5 py38h06a4308_0
colour 0.1.5 pypi_0 pypi cycler 0.10.0 pypi_0 pypi decorator 4.4.2 pypi_0 pypi glcontext 2.3.2 pypi_0 pypi ipython 7.20.0 pypi_0 pypi ipython-genutils 0.2.0 pypi_0 pypi jedi 0.18.0 pypi_0 pypi kiwisolver 1.3.1 pypi_0 pypi ld_impl_linux-64 2.33.1 h53a641e_7
libedit 3.1.20191231 h14c3975_1
libffi 3.3 he6710b0_2
libgcc-ng 9.1.0 hdf63c60_0
libstdcxx-ng 9.1.0 hdf63c60_0
manimgl 1.0.1.dev2 dev_0 manimpango 0.2.3 pypi_0 pypi mapbox-earcut 0.12.10 pypi_0 pypi matplotlib 3.3.4 pypi_0 pypi moderngl 5.6.3 pypi_0 pypi moderngl-window 2.3.0 pypi_0 pypi mpmath 1.2.1 pypi_0 pypi multipledispatch 0.6.0 pypi_0 pypi ncurses 6.2 he6710b0_1
numpy 1.20.1 pypi_0 pypi openssl 1.1.1i h27cfd23_0
parso 0.8.1 pypi_0 pypi pexpect 4.8.0 pypi_0 pypi pickleshare 0.7.5 pypi_0 pypi pillow 8.1.0 pypi_0 pypi pip 20.3.3 py38h06a4308_0
progressbar 2.5 pypi_0 pypi prompt-toolkit 3.0.16 pypi_0 pypi ptyprocess 0.7.0 pypi_0 pypi pydub 0.24.1 pypi_0 pypi pyglet 1.5.15 pypi_0 pypi pygments 2.8.0 pypi_0 pypi pyopengl 3.1.5 pypi_0 pypi pyparsing 2.4.7 pypi_0 pypi pyrr 0.10.3 pypi_0 pypi python 3.8.5 h7579374_1
python-dateutil 2.8.1 pypi_0 pypi pyyaml 5.4.1 pypi_0 pypi readline 8.1 h27cfd23_0
scipy 1.6.1 pypi_0 pypi screeninfo 0.6.7 pypi_0 pypi setuptools 52.0.0 py38h06a4308_0
six 1.15.0 pypi_0 pypi sqlite 3.33.0 h62c20be_0
sympy 1.7.1 pypi_0 pypi tk 8.6.10 hbc83047_0
tqdm 4.57.0 pypi_0 pypi traitlets 5.0.5 pypi_0 pypi validators 0.18.2 pypi_0 pypi wcwidth 0.2.5 pypi_0 pypi wheel 0.36.2 pyhd3eb1b0_0
xz 5.2.5 h7b6447c_0
zlib 1.2.11 h7b6447c_3

ghost commented 3 years ago

Can confirm the same error. Fresh clone from master and followed the commands exactly. Also used a virtual environment for the python packages.

Might have something to do with opengl and Ubuntu 20.10 (not sure if that's the version you're on as well)

Edit: Worked it out. It doesn't work with moderngl==5.6.0 and above. Downgrading moderngl to 5.5.4 fixed the issue

pip install moderngl==5.5.4

einarf commented 3 years ago

It's related to manimpango. See : https://github.com/3b1b/manim/issues/1391#issuecomment-786031661

It seems to cause some memory curruption on Ubuntu unless installed from source. Downgrading moderngl just masks the problem.

The instructions for installing manimpango from source : https://github.com/manimcommunity/manimpango#note

einarf commented 3 years ago

This should now be fixed with the new manimpango release. It no longer supplies wheels for manylinx and will be compiled on install.

3b1b / manim