Xfce Forum

The Recorder

Member

Registered: 2008-08-08

Posts: 2

Problem With Dual Monitor Display Settings

Just installed the Xubuntu Desktop on a Jaunty machine that already has Ubuntu and Kubuntu installed. Everything is working OK, except that I have two (2) monitors, and Display is only showing one (1) monitor. This is NOT the case in Ubuntu and Kubuntu, and in Ubuntu I am even able to get a Big Destop (2048x76 and Compiz running, even though I have an older ATI card (Radeon x700) and am using the open-source ATI drivers.

What is odd is that when I bring up Desktop Settings (in Xubuntu) it shows tabs for "Monitor 1 (DVI-1)" and "Monitor 2 (DVI-2)". Of course, since Xfce Display is only recognizing one (1) monitor, the settings in each tab affect both monitors.

My "xorg.conf" file is a simple one:

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
SubSection "Display"
Virtual 2048 768
Depth 24
Modes "1024x768"
EndSubSection
EndSection

Section "Device"
Identifier "Configured Video Device"
EndSection

Section "ServerFlags"
Option "DontZap" "True"
EndSection

Fearing that I might mess up my Ubuntu and Kubuntu setups, I am a little afraid to change anything in the "xorg.conf" file.

Does anyone have any ideas on what I might do to get the second monitor to show up in Xubuntu?

Thanks much,

The Recorder

toga

Member

Registered: 2007-03-13

Posts: 1

Website

Re: Problem With Dual Monitor Display Settings

It looks like you might have to create you own xorg.conf. Especially getting both screens defined.

Here is a copy of my xorg.conf. It's for a 24" LCD and a 52" TV using a NVIDIA 8600.
==================================================
Section "ServerLayout"
    Identifier     "Dual head configuration"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" Below "Screen0"
EndSection

Section "Module"
    Load           "glx"
EndSection

Section "ServerFlags"
    Option         "Xinerama" "0"
EndSection

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "keyboard"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Asus"
    ModelName      "ACI VK246H HDMI"
    DisplaySize     531    299
    HorizSync       31.0 - 83.0
    VertRefresh     56.0 - 76.0
EndSection
   
Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "SAMSUNG"
    ModelName      "LN52A540P2FXZA"
#    Dot Pitch  0.82mm
    HorizSync       30.0 - 50.0
    VertRefresh     60.0
EndSection
   
Section "Device"
    Identifier     "GeForce 8600 GT"
    Driver         "nvidia"
    BusID          "PCI:2:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier     "HDTV"
    Driver         "nvidia"
    BusID          "PCI:2:0:0"
    Screen          1
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8600 GT"
    BusID          "PCI:2:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8600 GT"
    BusID          "PCI:2:0:0"
    Screen          1
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "NvAGP" "3"
    Option         "SWCursor" "1"
    Option         "UseEdidFreqs" "true"
    Option         "NoLogo" "true"
    Option         "CursorShadow" "false"
    Option         "UseEvents" "false"
    Option         "AddARGBGLXVisuals" "true"
    Option         "RenderAccel" "True"
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-0: 1920x1080 +0+0; DFP-0: 1600x1024 +0+0; DFP-0
: 1024x768 +0+0; DFP-0: 640x480 +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "HorizSync" "30-50"
    Option         "VertRefresh" "60"
    Option         "TVStandard" "HD1080p"
    Option         "IgnoreDisplayDevices" "TV"
    Option         "NoLogo" "true"
    Option         "TVOutFormat" "Component"
    Option         "ConnectedMonitor" "TV"
    Option         "SWCursor" "1"
    Option         "RenderAccel" "True"
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-1: 1920x1080_60i +0+0; DFP-1: 720x480 +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
========================================

It works for me, but I'm sure your milage will vary.

---

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