已经解决一个了，呵呵，谢谢楼下的兄弟~~~
1、在 /boot/grub/menu.lst的启动菜单中加了“vga=791”,然后装了nvidia-glx和nvidia-glx-dev,设置显示分辨率为1280*768@60。
2、在/etc/X11/xorg.conf中加了1280*768这个分辨率，应该要加吧，呵呵。
## ## End Default Options ##
title Ubuntu, kernel 2.6.20-15-generic
root (hd0,7)
kernel /boot/vmlinuz-2.6.20-15-generic root=UUID=89685a88-20c5-4a76-9a56-61b65550287f ro quiet splash locale=zh_CN vga=791
initrd /boot/initrd.img-2.6.20-15-generic
quiet
title Ubuntu, kernel 2.6.20-15-generic (recovery mode)
root (hd0,7)
kernel /boot/vmlinuz-2.6.20-15-generic root=UUID=89685a88-20c5-4a76-9a56-61b65550287f ro single
initrd /boot/initrd.img-2.6.20-15-generic
title Ubuntu, memtest86+
root (hd0,7)
kernel /boot/memtest86+.bin
quiet
### END DEBIAN AUTOMAGIC KERNELS LIST
# This is a divider, added to separate the menu items below from the Debian
# ones.
title Other operating systems:
root
# This entry automatically added by the Debian installer for a non-linux OS
# on /dev/sda1
title Microsoft Windows XP Professional
root (hd0,0)
savedefault
makeactive
chainloader +1
问题：
宽屏（WinXP下使用的分辨率为1280*768）笔记本live cd时1024*768*16才能正常显示，不然启动进度条完成后进桌面只看到几条斜线的花屏，能进系统，因为能听到进系统的声音，但操作都看不到的；安装到硬盘时，分辨率保留默认的1024*768，800*600和640x480，但装完启动后进度条完成后就看不到登陆页面，同样是只看到几条斜线的花屏，直接输入用户名和密码能登陆，同样看不到，配置文件内容为：
# /etc/X11/xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf(5) manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg
Section "Files"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/usr/share/fonts/X11/cyrillic"
FontPath "/usr/share/fonts/X11/100dpi/:unscaled"
FontPath "/usr/share/fonts/X11/75dpi/:unscaled"
FontPath "/usr/share/fonts/X11/Type1"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
# path to defoma fonts
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection
Section "Module"
Load "i2c"
Load "bitmap"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "vbe"
EndSection
Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
EndSection
Section "InputDevice"
Driver "wacom"
Identifier "stylus"
Option "Device" "/dev/input/wacom"
Option "Type" "stylus"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection
Section "InputDevice"
Driver "wacom"
Identifier "eraser"
Option "Device" "/dev/input/wacom"
Option "Type" "eraser"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection
Section "InputDevice"
Driver "wacom"
Identifier "cursor"
Option "Device" "/dev/input/wacom"
Option "Type" "cursor"
Option "ForceDevice" "ISDV4" # Tablet PC ONLY
EndSection
Section "Device"
Identifier "nVidia Corporation MCP51 PCI-X GeForce Go 6100"
Driver "nv"
BusID "PCI:0:5:0"
EndSection
Section "Monitor"
Identifier "通用显示器"
Option "DPMS"
HorizSync 28-51
VertRefresh 43-60
EndSection
Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation MCP51 PCI-X GeForce Go 6100"
Monitor "通用显示器"
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"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "stylus" "SendCoreEvents"
InputDevice "cursor" "SendCoreEvents"
InputDevice "eraser" "SendCoreEvents"
EndSection
Section "DRI"
Mode 0666
EndSection
