设置好3d特效

ubuntu7.10装好久了，今天终于抽空安装好3d effect.我的显卡是ati radeon xpress 1100.

花了我2个小时？

• 首先确定驱动安装正确：

fglrxinfo

display: :0.0  screen: 0
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Radeon Xpress Series
OpenGL version string: 2.0.6473 (8.37.6)
以上信息表示ati的驱动安装好了

• 然后确定3d特效打开

glxinfo | grep direct
direct rendering: Yes

• 先试着打开特效

最初提示："The Composite extension is not available"

于是在 etc/X11/xorg.conf里设置

Section “Extensions”
Option “Composite” “Enable”
EndSection

然后的提示信息是:
"Desktop effects could not be enabled"

还有问题

• 查找论坛， 找到一个答案：要安装xserver-xgl， 安装好后， 特效果然可以开。鉴于第一条出错信息， /etc/X11/xorg.conf文件的改动还是保存了。

参考(en)：
http://ubuntuforums.org/showthread.php?t=595780
http://ubuntuforums.org/showthread.php?t=591445
http://ubuntuforums.org/showthread.php?t=575843

信息：
Xgl server setup changed

The Xgl server will now be started automatically next time you login.  It is no longer necessary to use any special X session to start Xgl, and such sessions will likely fail to work properly.  Please select a regular session from your session manager next time you log in.  To disable Xgl autostart for this user, create a file named ~/.config/xserver-xgl/disable