[kubuntu] Enabling Sandybridge New Acceleration

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http://ubuntuforums.org – I read here that enabling "Sandybridge New Acceleration" can speed up KDE, but the link it provided is marked as private and I can't go to it. I read here that the current Intel video driver supports SNA, but it is off by default. And this page that I have to compile the xf86-intel-video package with --enable-sna, but when I tried that I got this: Code: alex@kubuntu:~$ sudo apt-get source xserver-xorg-video-intel Reading package lists... Done Building dependency tree      Reading state information... Done NOTICE: 'xserver-xorg-video-intel' packaging is ma (Hardware)