nouveau KMS + custom modelines

[Bruno Wolff III]

On Wed, Nov 18, 2009 at 10:49:07 +0100,
  Martin Jürgens <ma at jgs-wg.de> wrote:
> Hi, I am using a very old 17'' TFT (1280x1024) which does not provide
> any autodetection data. Thus, only the resolution of 800x600 is
> autodetected. I'd like to provide KMS a custom modeline at boot up so
> that it uses my TFT's real resolution. How can I do that / what kernel
> parameter do I have to use?

I use xorg.conf files for this. It doesn't affect early boot, but does apply
later. Here is one I use on a system with an nVidia card using nouveau:

# Xorg configuration created by system-config-display

Section "ServerLayout"
	Identifier     "single head configuration"
	Screen      0  "Screen0" 0 0
	InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "InputDevice"

# keyboard added by system-config-display
	Identifier  "Keyboard0"
	Driver      "kbd"
	Option	    "XkbModel" "pc105+inet"
	Option	    "XkbLayout" "us"
EndSection

Section "Monitor"
	Identifier   "Monitor0"
	ModelName    "NEC MultiSync LCD2010X"
	HorizSync    31.0 - 80.0
	VertRefresh  56.0 - 85.0
	Modeline "1280x1024_70.00"  129.00  1280 1368 1504 1728  1024 1027 1034 1069 -hsync +vsync
	Option	    "dpms"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "nouveau"
EndSection

Section "Screen"
	Identifier "Screen0"
	Device     "Videocard0"
	Monitor    "Monitor0"
	DefaultDepth     24
	SubSection "Display"
		Viewport   0 0
		Virtual 1280 1024
		Depth     24
		Modes "1280x1024_70.00"
	EndSubSection
EndSection