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[ullix <538275@xxxxxxxxxxxxxxxxxx>]

I am actually having a similar problem, and judging from some forum
discussions there seem to be a lot more people with that problem.

Under Lucid with kernel 2.6.32-25-generic #43-Ubuntu I can successfully
change the desired mode on my monitor to 1152x864 75Hz by having a
modeline setting in my xorg.conf file (see at end).

But as this kernel does not support my webcam, I tried
2.6.35-020635rc1-generic from the kernel mainline. While this one does
support the webcam, my modeline setting is now ignored, and a resolution
of 1280x1024 is set, but at only 60Hz. The flicker is not acceptable,

The same 1280x1024 @60Hz setting comes up when I boot non-modified
Maverick beta from a USB stick.



xorg.conf file:
Section "Monitor"
	Identifier	"Configured Monitor"
	Vendorname	"ViewSonic"
	Modelname	"ViewSonic G771"
	Horizsync	60-68
	Vertrefresh	70-80
	modeline  "1152x864@75" 108.0 1152 1216 1344 1600 864 865 868 900 +hsync +vsync
	Option "PreferredMode" "1152x864@75"
	Option		"DPMS"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Monitor		"Configured Monitor"
	Device		"Configured Video Device"
	DefaultDepth	24
EndSection

-- 
Nouveau not working with Modeline resolution in xorg.conf
https://bugs.launchpad.net/bugs/538275
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