Various OpenGL drivers don't support 16-bit anymore because the hardware internally uses more than 16-bit anyway. Glxinfo might be running using software rendering. I would try some real OpenGL apps like quake3 or so.
Various OpenGL drivers don't support 16-bit anymore because the hardware internally uses more than 16-bit anyway. Glxinfo might be running using software rendering. I would try some real OpenGL apps like quake3 or so.