第一次安装驱动后都正常的，能打开CCC，但是Ubuntu自动更新到Linux 2.6.28-13-generic的内核后驱动就失效了，而且在应用程序菜单里找不到启动CCC的项目。
后来磕磕碰碰终于把显卡驱动装上了，是AMD官网上下的ati-driver-installer-9-7-x86.x86_64.run
能开启桌面特效，视觉效果开到正常。但是性能很差，感觉很卡，特别是最大化窗口的时候，要延时2－3秒才起效果。
请教各位前辈，如何优化性能？如何启动CCC？
附我的xorg.conf文件：
代码： 全选
Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection
Section "Files"
EndSection
Section "Module"
EndSection
Section "Monitor"
Identifier "Configured Monitor"
EndSection
Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection
Section "Device"
Identifier "Configured Video Device"
EndSection
Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Default Screen"
Device "Configured Video Device"
Monitor "Configured Monitor"
EndSection
Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
Monitor "aticonfig-Monitor[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection