This may be related to bug 941826, even though I can reproduce it on a headless server without NVidia graphics, using Xvfb.
I found two possible workarounds:
- Install libglvnd-dev package which will mask the real libGL.so. - Add these three lines on top of your script: https://bugs.launchpad.net/ubuntu/+source/python-qt4/+bug/941826/comments/21.
This may be related to bug 941826, even though I can reproduce it on a headless server without NVidia graphics, using Xvfb.
I found two possible workarounds:
- Install libglvnd-dev package which will mask the real libGL.so. /bugs.launchpad .net/ubuntu/ +source/ python- qt4/+bug/ 941826/ comments/ 21.
- Add these three lines on top of your script: https:/