修改/etc/X11/xorg.conf，上面已经有详细的教程例子了，而且如果你的驱动是NVIDIA-8756，这款驱动必需加入以下的设置，否则只能刷到70：
Option "UseEDID" "FALSE"
Option "UseEDIDFreqs" "FALSE"
Option "UseEDIDDpi" "FALSE"
Option "ModeValidation" "NoEdidModes"
如
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "UseEDID" "FALSE"
Option "UseEDIDFreqs" "FALSE"
Option "UseEDIDDpi" "FALSE"
Option "ModeValidation" "NoEdidModes"
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection
我把这个文件内容贴出来，把
HorizSync 31.5 - 57.0
VertRefresh50.0 - 70.0
改成
HorizSync 31.5 - 70.0
VertRefresh50.0 - 85.0
看有啥反应。
# Xorg configuration created by system-config-display
Section "ServerLayout"
Identifier "single head configuration"
Screen 0"Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "/usr/X11R6/lib/X11/fonts/misc:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/misc"
FontPath "/usr/X11R6/lib/X11/fonts/Type1"
FontPath "/usr/X11R6/lib/X11/fonts/cyrillic"
FontPath "/usr/X11R6/lib/X11/fonts/TTF"
FontPath "/usr/share/fonts/default/Type1"
FontPath "/usr/share/fonts/ttf/zh_CN"
EndSection
Section "Module"
Load"dbe"
Load"extmod"
Load"fbdevhw"
Load"glx"
Load"record"
Load"freetype"
Load"type1"
Load"dri"
EndSection
Section "InputDevice"
Identifier"Keyboard0"
Driver "keyboard"
Option "XkbRules" "xfree86"
Option "XbkModel" "pc105"
Option "XkbLayout" "us"
EndSection
Section "InputDevice"
# Modified by system-config-mouse
Identifier"Mouse0"
Driver "mouse"
Option "Device" "/dev/input/mice"
Option "Protocol" "IMPS/2"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "Monitor"
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
### Comment all HorizSync and VertSync values to use DDC:
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor 1024x768"
### Comment all HorizSync and VertSync values to use DDC:
HorizSync 31.5 - 57.0
VertRefresh50.0 - 70.0
EndSection
Section "Device"
Identifier"Videocard0"
Driver "sis"
VendorName"Videocard vendor"
BoardName "SiS 630/730"
VideoRam 8192
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 8
Modes "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1024x768" "800x600" "640x480"
EndSubSection
EndSection
非常好！重开X发现更清晰，一查刷新率竟是85。
非常感谢大家！现在我要专心解决声卡和打印机问题了。
看显示器的EDID信息，应该不支持85的刷新率，这也成？
刷新率用75吧,你的显示器用85对其寿命不太好.
当然是改成75。现在待解决的问题如下：
1 每次开机或重启总是静音，声卡反复装后依然静音。
2 象RF Linux4.1 5.0一样，ML2.0不支持我的HP Officejet 4255.这个问题恐怕不能有什么寄望。