Fedora16,装完显卡驱动，显示1280x1024不正常

Fedora16显示1280x1024不正常，比实际屏幕宽，但是1024x768是正常的。

试了几次发现1280x960也可以，只要显示比例是4：3的都可以，是5：4的就不正常。这是为什么阿？

[lijz@localhost X11]$ cat xorg.conf
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
Screen 2 "Screen2" RightOf "Screen1"
Screen 3 "Screen3" RightOf "Screen2"
Screen 4 "Screen4" RightOf "Screen3"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "catalogue:/etc/X11/fontpath.d"
FontPath "built-ins"
EndSection

Section "Module"
Load "dbe"
Load "dri"
Load "record"
Load "dri2"
Load "glx"
Load "extmod"
EndSection

Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
HorizSync 28.0 - 65.0
VertRefresh 43.0 - 72.0
Option "DPMS"
Modeline "1280x1024_60.00" 108.88 1280 1360 1496 1712 1024 1025 1028 1060 -HSync +Vsync
EndSection

Section "Monitor"
Identifier "Monitor1"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor2"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor3"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Monitor"
Identifier "Monitor4"
VendorName "Monitor Vendor"
ModelName "Monitor Model"
EndSection

Section "Device"
Identifier "Card0"
Driver "nvidia"
BusID "PCI:0:13:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: : integer, : float, : "True"/"False",
### : "String", : " Hz/kHz/MHz",
### : "%"
### [arg]: arg optional
#Option "SWcursor" # []
#Option "HWcursor" # []
#Option "NoAccel" # []
#Option "ShadowFB" # []
#Option "UseFBDev" # []
#Option "Rotate" # []
#Option "VideoKey" #
#Option "FlatPanel" # []
#Option "FPDither" # []
#Option "CrtcNumber" #
#Option "FPScale" # []
#Option "FPTweak" #
#Option "DualHead" # []
Identifier "Card1"
Driver "nv"
BusID "PCI:0:13:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: : integer, : float, : "True"/"False",
### : "String", : " Hz/kHz/MHz",
### : "%"
### [arg]: arg optional
#Option "SWcursor" # []
#Option "HWcursor" # []
#Option "NoAccel" # []
#Option "ShadowFB" # []
#Option "UseFBDev" # []
#Option "Rotate" # []
#Option "VideoKey" #
#Option "FlatPanel" # []
#Option "FPDither" # []
#Option "CrtcNumber" #
#Option "FPScale" # []
#Option "FPTweak" #
#Option "DualHead" # []
Identifier "Card2"
Driver "nv"
BusID "PCI:0:13:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: : integer, : float, : "True"/"False",
### : "String", : " Hz/kHz/MHz",
### : "%"
### [arg]: arg optional
#Option "ShadowFB" # []
#Option "Rotate" #
#Option "fbdev" #
#Option "debug" # []
Identifier "Card3"
Driver "fbdev"
BusID "PCI:0:13:0"
EndSection

Section "Device"
### Available Driver options are:-
### Values: : integer, : float, : "True"/"False",
### : "String", : " Hz/kHz/MHz",
### : "%"
### [arg]: arg optional
#Option "ShadowFB" # []
#Option "DefaultRefresh" # []
#Option "ModeSetClearScreen" # []
Identifier "Card4"
Driver "vesa"
BusID "PCI:0:13:0"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen1"
Device "Card1"
Monitor "Monitor1"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen2"
Device "Card2"
Monitor "Monitor2"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen3"
Device "Card3"
Monitor "Monitor3"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Section "Screen"
Identifier "Screen4"
Device "Card4"
Monitor "Monitor4"
SubSection "Display"
Viewport 0 0
Depth 1
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 4
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 8
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 15
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 16
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection