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Old 05-22-2008, 03:55 AM   #1
Registered: Mar 2004
Distribution: Ubuntu 8.04
Posts: 127

Rep: Reputation: 15
Gnome "Screen Resolution" Manager does not detect multiple monitors


The new Ubuntu (Hardy, that is) comes with gnome-display-properties, which is supposed to be able to detect multiple monitors and configure them, but it's not doing that for me. I can only see one monitor in the config window, and it is labeled "Unknown". It lets me change the screen resolution just fine, but I can only use one of my monitors.

I am using the proprietary NVidia drivers with a nVidia GeForce G0 7600 on a laptop. One of the monitors is the laptop's built-in LCD and the other is an external LCD connected via VGA.

Another note: I can use nvidia-settings to activate and switch between my monitors, but this has some ugly side effects, like fullscreen apps being shrunken down to a little box on a black background, and Gnome windows and panels not snapping to the edges of the screen.

This is my current /etc/X11/xorg.conf:

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder3) Wed Sep 12 14:29:35 PDT 2007

Section "ServerLayout"
Identifier "layout0"
Screen 0 "screen0" 0 0
InputDevice "keyboard0"
InputDevice "mouse0"

Section "Files"

# path to defoma fonts
FontPath "/usr/share/X11/fonts/misc"
FontPath "/usr/share/X11/fonts/cyrillic"
FontPath "/usr/share/X11/fonts/100dpi/:unscaled"
FontPath "/usr/share/X11/fonts/75dpi/:unscaled"
FontPath "/usr/share/X11/fonts/Type1"
FontPath "/usr/share/X11/fonts/100dpi"
FontPath "/usr/share/X11/fonts/75dpi"
FontPath "/usr/share/fonts/X11/misc"
FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"

Section "Module"
Load "dbe"
Load "i2c"
Load "bitmap"
Load "ddc"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "type1"
Load "vbe"

Section "InputDevice"
Identifier "keyboard0"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
Option "XkbOptions" "lv3:ralt_switch"

Section "InputDevice"
Identifier "mouse0"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ExplorerPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "false"

Section "Monitor"
Identifier "monitor0"
ModelName "DELL 1704FPT"
Option "DPMS"

Section "Device"
Identifier "card0"
Driver "nvidia"

Section "Screen"
Identifier "screen0"
Device "card0"
Monitor "monitor0"
DefaultDepth 24
Option "NoLogo" "True"
Option "AllowGLXWithComposite" "true"
Option "TripleBuffer" "True"
Option "XAANoOffscreenPixmaps" "true"
Option "metamodes" "CRT: nvidia-auto-select +0+0"
Option "AddARGBVisuals" "True"
Option "AddARGBGLXVisuals" "True"
SubSection "Display"
Depth 24
Modes "nvidia-auto-select"

Section "Extensions"
Option "Composite" "Enable"


dual monitor, gnome, monitor, nvidia, ubuntu

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