https://bugs.freedesktop.org/show_bug.cgi?id=30901
--- Comment #1 from Michel Dänzer michel@daenzer.net 2010-10-22 06:32:42 PDT --- (In reply to comment #1)
[...] when I add "--enable-gallium-llvm", HoN won't start with "K2 - Fatal Error: ARB_vertex_buffer_object not available." This is quite strange because glxinfo is identical and shows GL_ARB_vertex_buffer_object in both cases (and OpenGL vendor string: X.Org R300 Project, OpenGL renderer string: Gallium 0.4 on RV530, so its not like I was using some other driver).
So either the game is picking up a different libGL.so.1 / r300_dri.so, or the error message is misleading and the problem is due to something not visible in glxinfo. As a starting point, are there any differences in the output of 'glxinfo -l'?