Done. After that I did: emerge -av xf86-video-intel killall -1 X However, performances didn't change much... xxx@localhost ~ $ glxinfo | grep render direct rendering: Yes OpenGL renderer string: Software Rasterizer Other ideas? Thank you, Massimiliano It just means that you need to change the VIDEO_CARDS to include "intel". So, what you need to do is set VIDEO_CARDS to contain the string "intel". With this variable, gentoo controls which drivers are being built when you emerge xorg-x11, mesa, etc