klayout graphics card issue on linux

[spnadig]

"failed to load driver: swrast"

On running klayout - I get this warning

[proppy]

@spnadig can you confirm which version of linux you're running with uname -a.

This seems related to:
ContinuumIO/anaconda-issues#12889
conda-forge/ctng-compilers-feedstock#95

[spnadig]

Linux  5.19.11-1rodete1-amd64 #1 SMP PREEMPT_DYNAMIC Debian 5.19.11-1rodete1 (2022-10-31) x86_64 GNU/Linux

[proppy]

This seems to be a version missmatch with the libc version used in the environment and the one the driver are linked against:

$ LIBGL_DEBUG=verbose klayout
...
libGL: MESA-LOADER: failed to open /usr/lib/x86_64-linux-gnu/dri/iris_dri.so: /home/proppy/silicon-gf180mcuC-env/bin/../lib/libstdc++.so.6: version `GLIBCXX_3.4.30' not found (required by /lib/x86_64-linux-gnu/libLLVM-15.so.1)
...

And if forcing:

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

no errors.

[proppy]

Updating https://anaconda.org/conda-forge/libstdcxx-ng locally seems to solve the issue by upgrading to libstdc++.so.6 to a newer version (12.2.0).

The main channel https://anaconda.org/main/libstdcxx-ng is still on an older version (11.2.0).