解决ATI显卡在ubuntu 9.10下开特效有点卡的问题

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解决ATI 显卡在ubuntu 下开特效有点卡的问题

ATI 3400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 | sudo apt-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