Nouveau driver not working with external monitor

[justinb]

Been banging my head against this for a while. I can't get my external monitor working with the nouveau driver. I've previously had dual monitors working with the nVidia driver.

My laptop is running Fedora 16 (3.4.6-1.fc16.x86_64).

Graphics card is nVidia:

$ lspci | grep VGA
02:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce GTX 285M] (rev a2)

xrandr is showing the monitor is connected:

$ xrandr 
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
LVDS-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080      60.0*+   60.0  
   1680x1050      60.0  
   1400x1050      60.0  
   1280x1024      59.9  
   1280x960       59.9  
   1152x864       60.0  
   1024x768       59.9  
   800x600        59.9  
   640x480        59.4  
   720x400        59.6  
   640x400        60.0  
   640x350        59.8  
HDMI-1 disconnected (normal left inverted right x axis y axis)
DVI-I-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080      60.0*+

I've tried explicitly setting monitors in xorg.conf.

Section "Device"
        Identifier     "videocard"
        Option         "LVDS-1" "laptop"
        Option         "DVI-I-1" "external-dvi"
EndSection

Section "Monitor" 
        Identifier      "laptop"
        Option "PreferredMode"  "1920x1080"
        Option        "Position" "1920 0"
EndSection

Section "Monitor" 
        Identifier      "external-dvi"
        Option "PreferredMode"  "1920x1200"
        Option "RightOf"  "laptop"
        Option "Enable"  "true"       
EndSection

Section "Screen" 
        Identifier "screen0"
        Monitor    "laptop"
        Device     "videocard"
        DefaultDepth 24
        SubSection "Display"
                Depth      24
                Virtual 3840 2400
        EndSubSection
EndSection

Section "ServerLayout" 
        Identifier "layout0"
        Screen "screen0"
EndSection