I have a laptop with a Core i5-3317U CPU, which features a HD4000 chipset (http://ark.intel.com/fr/products/65707/intel-core-i5-3317u-processor-3m-cache-up-to-2_60-ghz), which normally supports OpenGL 4.1. I installed the latest mesa version (9.2 development version) (from https://launchpad.net/~xorg-edgers/+archive/ppa), which I believe updated NV drivers too, as well as the kernel version xorg-edgers recommended (which is a 3.8 kernel) and yet when I run glxinfo:
OpenGL version string: **3.0** Mesa 9.2.0 OpenGL shading language version string: 1.30
Is there something else to install? Should I alter my xorg.conf?