我的显示器是Aceral1716，刚进入ubuntu的时候只能够800x640显示
下面是一些帖子的集合，这些步骤后，显示器显示正常
1.replacetheoriginalxorg.confwith:(itmaynotnecessary)!
#xorg.conf(xorgXWindowSystemserverconfigurationfile)
#
#Thisfilewasgeneratedbydexconf,theDebianXConfigurationtool,using
#valuesfromthedebconfdatabase.
#
#Editthisfilewithcaution,andseethexorg.confmanualpage.
#(Type"manxorg.conf"attheshellprompt.)
#
#Thisfileisautomaticallyupdatedonxserver-xorgpackageupgrades*only*
#ifithasnotbeenmodifiedsincethelastupgradeofthexserver-xorg
#package.
#
#Ifyouhaveeditedthisfilebutwouldlikeittobeautomaticallyupdated
#again,runthefollowingcommand:
#sudodpkg-reconfigure-phighxserver-xorg
Section"Files"
EndSection
Section"InputDevice"
Identifier"GenericKeyboard"
Driver"kbd"
Option"CoreKeyboard"
Option"XkbRules""xorg"
Option"XkbModel""pc105"
Option"XkbLayout""it"
EndSection
Section"InputDevice"
Identifier"ConfiguredMouse"
Driver"mouse"
Option"CorePointer"
Option"Device""/dev/input/mice"
Option"Protocol""ImPS/2"
Option"ZAxisMapping""45"
Option"Emulate3Buttons""true"
EndSection
Section"InputDevice"
Driver"wacom"
Identifier"stylus"
Option"Device""/dev/input/wacom"
Option"Type""stylus"
Option"ForceDevice""ISDV4"#TabletPCONLY
EndSection
Section"InputDevice"
Driver"wacom"
Identifier"eraser"
Option"Device""/dev/input/wacom"
Option"Type""eraser"
Option"ForceDevice""ISDV4"#TabletPCONLY
EndSection
Section"InputDevice"
Driver"wacom"
Identifier"cursor"
Option"Device""/dev/input/wacom"
Option"Type""cursor"
Option"ForceDevice""ISDV4"#TabletPCONLY
EndSection
Section"Device"
Identifier"ATITechnologiesIncRadeonRV100QY[Radeon7000/VE]"
Boardname"ATIRadeon"
Busid"PCI:1:5:0"
Driver"ati"
Screen0
Vendorname"ATI"
Option"MergedFB""off"
EndSection
Section"Monitor"
Identifier"AL1716"
Vendorname"Plug''n''Play"
Modelname"Plug''n''Play"
modeline"640x480@60"25.2640656752800480490492525-vsync-hsync
modeline"640x480@72"31.5640664704832480489491520-vsync-hsync
modeline"640x480@75"31.5640656720840480481484500-vsync-hsync
modeline"800x600@56"36.08008248961024600601603625 hsync vsync
modeline"800x600@72"50.08008569761040600637643666 hsync vsync
modeline"800x600@75"49.58008168961056600601604625 hsync vsync
modeline"800x600@60"40.08008409681056600601605628 hsync vsync
modeline"832x624@75"57.2848328649281152624625628667-vsync-hsync
modeline"1024x768@75"78.81024104011361312768769772800 hsync vsync
modeline"1024x768@70"75.01024104811841328768771777806-vsync-hsync
modeline"1024x768@60"65.01024104811841344768771777806-vsync-hsync
modeline"1152x864@75"108.01152121613441600864865868900 hsync vsync
modeline"1280x1024@75"135.012801296144016881024102510281066 hsync vsync
modeline"1280x960@60"102.11280136014961712960961964994-hsync vsync
modeline"1280x1024@60"108.012801328144016881024102510281066 hsync vsync
modeline"1280x960@75"129.8612801368150417289609619641002-hsync vsync
modeline"1400x1050@60"122.6114001488164018801050105110541087-hsync vsync
modeline"1400x1050@75"155.8514001496164818961050105110541096-hsync vsync
modeline"1600x1200@65"175.516001664185621601200120112041250 hsync vsync
modeline"1600x1200@60"162.016001664185621601200120112041250 hsync vsync
modeline"1792x1344@60"204.817921920212024481344134513481394-hsync vsync
Gamma1.0
EndSection
Section"Screen"
Identifier"DefaultScreen"
Device"ATITechnologiesIncRadeonRV100QY[Radeon7000/VE]"
Monitor"AL1716"
Defaultdepth24
SubSection"Display"
Depth24
Virtual17921344
Modes"1280x1024@75""1280x960@60""1152x864@75""1280x1024@60""1024x768@60""1280x960@75""1024x768@70""1400x1050@60""1024x768@75""1400x1050@75""832x624@75""1600x1200@65""800x600@60""1600x1200@60""800x600@75""1792x1344@60""800x600@72""800x600@56""640x480@75""640x480@72""640x480@60"
EndSubSection
EndSection
Section"ServerLayout"
Identifier"DefaultLayout"
screen0"DefaultScreen"00
Inputdevice"GenericKeyboard"
Inputdevice"ConfiguredMouse"
#Uncommentifyouhaveawacomtablet
#InputDevice"stylus""SendCoreEvents"
#InputDevice"cursor""SendCoreEvents"
#InputDevice"eraser""SendCoreEvents"
EndSection
Section"Module"
Load"glx"
Load"GLcore"
Load"dri"
Load"v4l"
EndSection
Section"ServerFlags"
EndSection
2.monitorrange:
31-81,56-75
3.Youusethe"nvidia"driver(Binarydrivers)
Itwouldseemthatxorgcannotdetectthepossibleresolutionswhenusingthe"nvidia"driver.Forme,theonlyresolutionIcouldusewasmyLCD''snativeresolution(1680x1050).
Here''showyoufixthis:
1)Makeabackupofyour/etc/X11/xorg.confasshowninthepreviousexamples
2)Open/etc/X11/xorg.confasshowninthepreviousexamples
3)Addthefollowinglinetoyourexisting"Screen"section:
Option"UseEdidFreqs""false"
4.可是在“屏幕分辨率”窗口还是调不了刷新频率，分辨率倒是一堆。解决办法：
在Section"Screen"模块下的常用分辨率后加“_xx”（xx是你想要的刷新频率）。
还要注意一点，Section"Monitor"下的Identifier值要和Section"Screen"下的Monitor的值一致才行。一般只修改DefaultDepth值的色深后的分辨率即可，下边是例子：
Section"Screen"
Identifier"DefaultScreen"
Device"NVIDIACorporationNV11DDR[GeForce2MX100DDR/200DDR]"
Monitor"BenQFP71G"
DefaultDepth24
SubSection"Display"
Depth1
Modes"1280x1024"
EndSubSection
SubSection"Display"
Depth4
Modes"1280x1024"
EndSubSection
SubSection"Display"
Depth8
Modes"1280x1024"
EndSubSection
SubSection"Display"
Depth15
Modes"1280x1024"
EndSubSection
SubSection"Display"
Depth16
Modes"1280x1024"
EndSubSection
SubSection"Display"
Depth24
Modes"1280x1024_60"
EndSubSection
EndSection
保存退出，重启X即可。
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