Dual Monitor Setup Problem

**Beaneh** · March 10th, 2010

I've been trying to sort this for a while now.

I am quite new to Linux (been using it around 4 months or so) and I've recently had to temporarily go back to using Windows until I can get this sorted.

Basically, I've looked through loads of different forum posts and guides, but none of them seem to work. I'm having trouble getting my dual screen setup to work on Ubuntu 9.10.

The problem lies with my second monitor. Both my monitors are 22" Widescreen, 1680x1050 resolution. I am using an nvidia GTX 260 graphics card with the 185 Nvidia drivers recommended by the OS. I've tried installing later drivers but they just force both screens into a very small and horrible resolution that won't change.

I can set up my first screen to the correct resolution perfectly, but the second one will simply not let me put it into the correct resolution. The option to choose the correct resoluion isn't there at all, the only ones I can select are 4:3 resolutions. This is using the Nvidia X Configuration tool.

Below is my xorg.conf file. Sorry if it is laid out differently, I've had to put it onto my pendrive and paste it in using a Windows partition.

Code:

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildd@crested)  Sun Feb  1 20:25:37 UTC 2009

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"
EndSection

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

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

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    # HorizSync source: builtin, VertRefresh source: builtin
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "CRT-0"
    HorizSync       28.0 - 55.0
    VertRefresh     43.0 - 72.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 260"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "1"
    Option         "TwinViewXineramaInfoOrder" "CRT-1"
    Option         "metamodes" "CRT-0: nvidia-auto-select +1680+0, CRT-1: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Thanks in advance.

**Beaneh** · March 10th, 2010

Bump, anyone to help? :<

**rogue_0111** · March 10th, 2010

The easy route:

1. bring up a terminal and type: apt-get install lxrandr

2. to run type: lxrandr

You get a nice GUI and can choose the monitors resolution. To exit close the terminal.

Good luck

**Beaneh** · March 11th, 2010

Doesn't work sadly. When I bring up the program it says it is in the resolution it is supposed to be (3360x1050), but the second monitor stays in 1024x768...