Posted by Dolda2000 on Feb 06, 2014; 11:16am
URL: https://forum.jogamp.org/Cannot-initialize-JOGL-on-Mesa-swrast-after-upgrade-tp4031458p4031475.html

In continuation on that gdb attempt, it seems that, in this case, glXGetConfigAttrib dispatches to "Fake_glXGetFBConfigAttrib" in src/mesa/drivers/x11/fakeglx.c, which indeed returns -1 on having a NULL config passed in:

   if (!dpy || !config || !value)
      return -1;

I just wanted to mention it, since it is congruent with the Exception message saying "Unknown error code -1".