Can't set refresh rate to 75 with Samsung SyncMaster 932 BF

Hi,
I can't set refresh rate to 75Hz both in Gnome display properties and in Nvidia panel. So i have it stuck at 60Hz.
I've tried several solutions i found on forums but none of them worked
Here is my xorg.conf :
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder63) Tue Jan 6 10:03:02 PST 2009
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
ModulePath "/usr/lib/xorg/modules"
FontPath "/usr/share/fonts"
EndSection
Section "Module"
Load "glx"
Load "dbe"
Load "extmod"
Load "xtrap"
Load "record"
Load "freetype"
Load "bitmap"
Load "ddc"
EndSection
Section "ServerFlags"
Option "AutoAddDevices" "True"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbLayout" "fr"
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 "Samsung"
ModelName "SyncMaster 932 BF"
UseModes "Modes[0]"
HorizSync 30.0 - 81.0
VertRefresh 56.0 - 75.0
EndSection
Section "Device"
### Available Driver options are:-
### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
### [arg]: arg optional
#Option "ShadowFB" # [<bool>]
#Option "DefaultRefresh" # [<bool>]
#Option "ModeSetClearScreen" # [<bool>]
Identifier "Card0"
Driver "nvidia"
VendorName "nVidia Corporation"
BoardName "G92 [GeForce 8800 GTS]"
EndSection
Section "Modes"
Identifier "Modes[0]"
# 1280x1024 @ 75.00 Hz (GTF) hsync: 80.17 kHz; pclk: 138.54 MHz
Modeline "1280x1024_75.00" 138.54 1280 1368 1504 1728 1024 1025 1028 1069 -HSync +Vsync
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
SubSection "Display"
Depth 24
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Thanks in advance if i can get any help
EDIT : In Gnome display properties it says "Unknown Screen"
Last edited by Kaloos (2009-04-27 20:49:32)

1st : It runs perfectly fine at 1280x1024@75Hz in Windows XP/Vista, so there is no reason it shouldn't work in Linux. In Nvidia-panel there is even the 75Hz option in the drop-down list when resolution is 1280x1024.
2nd : It isn't easy on the eyes at 60Hz compared to 75Hz, even more when i play games (Quake 3 for example).
Last edited by Kaloos (2009-04-27 21:22:18)

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Can't set refresh rate to 75 with Samsung SyncMaster 932 BF

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