Posted by Tzargoth on May 13, 2019; 7:05pm
URL: https://forum.jogamp.org/JOGL-demo-and-other-apps-show-only-black-canvas-window-tp4039768p4039774.html

SUCCESS!!

Using the latest nightly builds from http://jogamp.org/deployment/autobuilds/master/ (gluegen, jogl, jogl-demos) and removing

export MESA_GL_VERSION_OVERRIDE=3.1

... from my script runs the Gears demo correctly.

Thank you for pointing me in the right direction.  Now I can try to get the other application to work.

And, yes glxgears works correctly.