ok this is annoying, 1152x864 doesn't work for some reason :\
X always start up in 1024x768 instead of 1152x864
Here's my XF86Config-4 file:
Section "ServerLayout"
Identifier "XFree86 Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
ModulePath "/usr/X11R6/lib/modules"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/CID/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection
Section "Module"
Load "extmod"
Load "dbe"
Load "dri"
Load "glx"
Load "type1"
Load "freetype"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "keyboard"
Option "XKbLayout" "se"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "imPS/2"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5"
EndSection
Section "Monitor"
DisplaySize 330 250 # mm
Identifier "Monitor0"
VendorName "Compaq"
ModelName "COMPAQ MV720"
Option "DPMS"
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 "NoAccel" # [<bool>]
#Option "SWcursor" # [<bool>]
#Option "Dac6Bit" # [<bool>]
#Option "Dac8Bit" # [<bool>]
#Option "ForcePCIMode" # [<bool>]
#Option "CPPIOMode" # [<bool>]
#Option "CPusecTimeout" # <i>
#Option "AGPMode" # <i>
#Option "AGPFastWrite" # [<bool>]
#Option "AGPSize" # <i>
#Option "RingSize" # <i>
#Option "BufferSize" # <i>
#Option "EnableDepthMoves" # [<bool>]
#Option "EnablePageFlip" # [<bool>]
#Option "NoBackBuffer" # [<bool>]
#Option "PanelOff" # [<bool>]
#Option "DDCMode" # [<bool>]
#Option "CloneDisplay" # <i>
#Option "CloneMode" # [<str>]
#Option "CloneHSync" # [<str>]
#Option "CloneVRefresh" # [<str>]
#Option "UseFBDev" # [<bool>]
#Option "VideoKey" # <i>
Identifier "card0"
Driver "fglrx"
VendorName "ATI"
BoardName "Radeon 9700 PRO"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 16
Modes "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
Section "DRI"
Mode 0666
EndSection
Help me