libGL error: failed to load driver

[JintaoLee-Roger]

For example:
"libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so:"
"libGL error: failed to load driver: iris"

This error is not caused by the CIGVis itself but is likely due to a version conflict with the shared libraries. More specifically, it may be caused by an unusual setting in the environment variable LD LIBRARY PATH (or DYLD LIBRARY PATH on macOS), which results in the incorrect shared library being loaded first.

[JintaoLee-Roger]

You can try to solve this by two methods.

First, set:

export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libstdc++.so.6

Otherwise, you can check your .bashrc or .zshrc file, and comment out the lines like export LD_LIBRARY_PATH... (DYLD_LIBRARY_PATH on MacOS). Then, run source ~/.bashrc or source ~/.zshrc.