https://bugs.freedesktop.org/show_bug.cgi?id=75602
--- Comment #9 from Michel Dänzer michel@daenzer.net --- (In reply to comment #8)
I only reported this because the proprietary works in this case.
Presumably fglrx supports higher OpenGL versions and GL_ARB_geometry_shader4 in compatibility contexts.
There is no reason why Mesa should fall back to the compatibility profile when more than one context is used I guess?
Mesa doesn't (couldn't) 'fall back' to the compatibility context. It means the app didn't ask for a core context.