高手请进，安装ATI显卡驱动失败

[sysboy]

系统本身是安装过nvdia显卡驱动的，后来恢复到带ati显卡的机器上，现在无法安装ati驱动。

Fail to install package “xorg-driver-fglrx 7.1.0-8-3+2.6.24.16-23.56_i386.deb”。

安装受限ATI accelerated graphics driver时间，出现以下错误。
E: /var/cache/apt/archives/xorg-driver-fglrx_1%3a7.1.0-8-3+2.6.24.16-23.56_i386.deb: subprocess pre-installation script returned error exit status 2

请告诉指点以下。谢谢！

[sysboy]

netwalker@netwalker:~/Desktop$ sudo apt-get install xorg-driver-fglrx
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed
xorg-driver-fglrx
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 0B/9952kB of archives.
After this operation, 30.1MB of additional disk space will be used.
(Reading database ... 205748 files and directories currently installed.)
Unpacking xorg-driver-fglrx (from .../xorg-driver-fglrx_1%3a7.1.0-8-3+2.6.24.16-23.56_i386.deb) ...
dpkg-divert: `diversion of /usr/lib/libGL.so.1.2 to /usr/lib/fglrx/libGL.so.1.2.xlibmesa by xorg-driver-fglrx' clashes with `diversion of /usr/lib/libGL.so.1.2 to /usr/lib/nvidia/libGL.so.1.2.xlibmesa by nvidia-glx-new'
dpkg: error processing /var/cache/apt/archives/xorg-driver-fglrx_1%3a7.1.0-8-3+2.6.24.16-23.56_i386.deb (--unpack):
subprocess pre-installation script returned error exit status 2
Errors were encountered while processing:
/var/cache/apt/archives/xorg-driver-fglrx_1%3a7.1.0-8-3+2.6.24.16-23.56_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
netwalker@netwalker:~/Desktop$

[sysboy]

root@netwalker:/home/netwalker/Desktop# fglrxinfo
display: :0.0 screen: 0
OpenGL vendor string: Mesa project: www.mesa3d.org
OpenGL renderer string: Mesa GLX Indirect
OpenGL version string: 1.4 (2.1 Mesa 7.0.3-rc2)

[davio3g]

我是这样安装ATI驱动的：
1、到它的官方网站下载合适的驱动程序。
2、在终端下进入存放驱动的目录，键入：sudo sh filename
用默认选项
3、上一步完后，键入：sudo aticonfig --initial
4、重启，OK。
5、如果有分辨率或刷新率的问题，可以参照我的xorg.conf修改一下。

Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Files"
EndSection

Section "Module"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
HorizSync 30.0 - 65.0
VertRefresh 50.0 - 80.0
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:1:5:0"
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
Modes "1024x768"
EndSubSection
EndSection

[sysboy]

sudo sh filename

filename是什么？

[davio3g]

驱动程序的名字