I am installing Gentoo on a computer with an AMD Radeon HD 7770 graphics card. I have followed the guide for "radeon" on the gentoo wiki for the configuration. Gnome 3 is running in fallback mode and I don't know why. I guess I don't have the drivers installed correctly but I haven't found a good guide to troubleshoot. My GDM log says no hardware 3d support. Any help will be appreciated. I'm not sure if I should post any information so let me know what to post to help find a solution.