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[Arkashkin <arkashkin@xxxxxxxxx>]

I have the same laptop model and both Ubuntu Intrepid Ibex and Jaunty can't detect my maximum resolution of the laptop screen which is 1400x1050. The only modes i have to choose from are - 640x480,800x600 and 1024x768 and the funny thing is that on older versions of 
Ubuntu (Feisty Fawn and Hardy) I could fix it by changing xorg.conf to:

//////////////////////////////////////////////////////////////////////////////////////////////
Section "Device"
Identifier "Radeon 9000"
Driver "ati"
BusID "PCI:1:0:0"
Option "GARTSize" "64"
Option "MergedFB" "off"
Option "XAANoOffscreenPixmaps" "true"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 30-70
VertRefresh 50-160
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Radeon 9000"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 24
Virtual 1920 1440
Modes "1400x1050"
EndSubSection
EndSection

Section "ServerLayout"
Option "AIGLX" "true"
Identifier "Default Layout"
Screen "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "DRI"
Mode 0666
EndSection

Section "Extensions"
Option "Composite" "Enable"
EndSection
////////////////////////////////////////////////////////////////////

I now use Ubuntu  Jaunty and i tried changing my xorg.conf to:

///////////////////////////////////////////////////////////////////

Section "Device"
	Identifier	"Configured Video Device"
        Option		"IgnoreEDID"
EndSection

Section "Monitor"
	Identifier	"Configured Monitor"
	DisplaySize  286 214
	Option "DPMS"
	HorizSync 30-70
	VertRefresh 50-160
EndSection

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

SubSection "Display"
	Modes	"1400x1050"
EndSubSection

EndSection
//////////////////////////////////////////////////////////////////

and it doesn't helps me either.

This is my xrandr command output :

///////////////////////////////////////////////////////////////

Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1024 x 1024
VGA-0 disconnected (normal left inverted right x axis y axis)
DVI-0 disconnected (normal left inverted right x axis y axis)
LVDS connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1024x768       60.0*+   60.0  
   800x600        60.3     59.9  
   640x480        59.9     59.4  
S-video disconnected (normal left inverted right x axis y axis)

///////////////////////////////////////////////////////////////

-- 
ati radeon driver does not autodetect displaysize on Latitude D600, therefore uses wrong resolution
https://bugs.launchpad.net/bugs/80940
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