请教关于xorg.conf的问题

[PyLearner]

我刚安装ubuntu,是个初学者，遇到了这么个问题：我的屏幕分辩率太低了，我在xorg.conf改了很多次了都不行（纯粹乱搞），而且我还发现我的屏幕变得比平常烫。谁能教我怎样改啊？
这是我最初的xorg.conf：
# xorg.conf (X.Org 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 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 "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "cn"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "Device"
Identifier "Configured Video Device"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen"
EndSection

我显示屏是philips 190cw7cb/93 ：规格
图片/ 显示
• LCD 面板类型: 1440 x 900 像素, 防眩偏振, RGB
垂直条纹
• 面板尺寸 : 19.1 英寸/48.1 厘米
• 有效显示区: 410.4 x 256.5 毫米
• 像素间距 : 0.285 x 0.285 毫米
• 亮度: 300 堪/ 平方米
• 对比度 （标准）: 850:1
• 显示屏颜色: 16.7 米
• 视角: 170º（水平）/160º（垂直）, @ C/R >
10
• 响应时间 （标准） : 5 毫秒
• 最高分辨率: 1440 x 900 @ 75 Hz
• 推荐的分辨率 : 1440 x 900 @ 60 Hz
• 视频点频 : 140 MHz
• 水平扫描频率 : 30 - 83 kHz
• 垂直扫描频率 : 55 - 75 Hz
•sRGB

[PyLearner]

我的以上问题现在已解决.(!!!!!!!!!!!)
过程是我在系统－－系统管理－－硬件驱动－里，在NVDIA显示卡加速驱动打上钩.............
然后就正常了（还有3D效果，嗯......应该是3D效果），不过说正常也不对，因为现在在我的刷新率最高只有59，本来我有75的。
这是我现在的xorg.conf
# xorg.conf (X.Org 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 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 "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver "nvidia"
Option "NoLogo" "True"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
Defaultdepth 24
EndSection

Section "ServerLayout"
Identifier "Default Layout"
screen "Default Screen"
EndSection
Section "Module"
Load "glx"
EndSection
好像也没多少，我是不是应该再改改？
还有它现在说什么受限驱动程序，我是不是应该自己去网上下载显卡驱动？

[hillking]

你算运气好的，我不能调分辨率

[muzuiget]

楼主初学就有耐心搞xorg.conf，佩服