[求助]图形界面的设置问题，大家帮帮我啊

Coolloves

安装的debian3.1，base－system
安装了kde－core！
用dpkg－reconfigure xserver－xfree86设置后
显示器在1034*768下只能在60hz，虽然在800*600下可上85hz，但是移动窗口或者拉动浏览器滚轴，均为一贞一贞移动的现象！

本人是15的显示器，xfree86中关于显卡和显示器的设置如下：

Section "Device"
Identifier "Intel Corporation i740"
Driver "i740"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
HorizSync 35-55
VertRefresh 50-85
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Intel Corporation i740"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 4
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 15
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection

Section "ServerLayout"

用了一下fanx，也出现了一贞一贞移动的问题，用了xconf就好了，在debian下如何？

本人初接触linux类系统，还望大家能多多帮助一下，不胜感激！