libGL error: MESA-LOADER: failed to open iris

Question

when executing a python script, I get this after generating a figure:

libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:$${ORIGIN}/dri:/usr/lib/dri, suffix _dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open iris: /usr/lib/dri/iris_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:$${ORIGIN}/dri:/usr/lib/dri, suffix _dri) libGL error: failed to load driver: iris libGL error: MESA-LOADER: failed to open swrast: /usr/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib/x86_64-linux-gnu/dri:$${ORIGIN}/dri:/usr/lib/dri, suffix _dri) libGL error: failed to load driver: swrast

I dont know how to fix it, i have searched for information but have found nothing to help me

Answer 1

Here are two possible solutions. Try them both and see what works.

Solution 1

Follow the instructions in this answer.

Solution 2

If you are using Anaconda to run this Python script, Anaconda may be the reason. This solution was taken from here (update 3), which in turn was taken from here.

From the latter link:

According to online information, there is a problem with the libstdc++.so file in Anaconda (I use this commercial python distribution). It cannot be associated with the driver of the system, so we removed it and used the libstdc++ that comes with Linux. so creates a soft link there.

To solve this problem, run this in bash:

$ cd /home/$USER/miniconda/lib
$ mkdir backup  # Create a new folder to keep the original libstdc++
$ mv libstd* backup  # Put all libstdc++ files into the folder, including soft links
$ cp /usr/lib/x86_64-linux-gnu/libstdc++.so.6  ./ # Copy the c++ dynamic link library of the system here
$ ln -s libstdc++.so.6 libstdc++.so
$ ln -s libstdc++.so.6 libstdc++.so.6.0.19

where $USER should be your own username.