解决ATI显卡在ubuntu 9.10下开特效有点卡的问题
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ATI3400系列显卡在ubuntu 9.10 karmic 下开特效后，感觉会有点卡，比如说在任务栏切换窗口的时候，可以感觉到明显的停顿。据说9.04 jaunty下也有同样的问题。
具体的解决办法是通过ppa源升级xorg-server
1.加入ppa源，“系统”-“系统管理”-“软件源”-“其它软件”-“添加”
ppa:ubuntu-x-swat/xserver-no-backfill
2.导入key
gpg –keyserver keyserver.ubuntu.com –recv-key3B22AB97AF1CDFA9
gpg –export –armor3B22AB97AF1CDFA9 | sudoapt-key add -
3.更新源并升级
sudo apt-get update && sudo apt-get upgrade
4.修改xorg.conf
sudo gedit /etc/X11/xorg.conf
找到Section “Device”这段，在Identifier“Default Device”下加上几行。
Option”RenderAccel” “on”
Option”AccelMethod” “XAA”
Option”AGPMode” “4″
5.重启系统或注销重新登录
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