Dual Monitors Different Resolutions

jawaking00 · 07-25-2005, 12:48 PM

Hello,

I've just lately installed Ubuntu and am starting to use Linux again. I've tried many flavors of Linux in the past and each time I've run into some problem and ran out of time or got frustrated and went back to Windows. This time it's looking better though.

The problem I'm having, though, is getting Dual Monitors to work. I've got a GeForce 6600 GT and two CRT monitors. The problem is that my secondary monitor can't display resolutions above 800x600. In windows it's not a problem because I can set each monitor to a different resolution, and in the past I've been able to do it in Linux when I had a Radeon 9600 Pro card. But with the GeForce card I can't seem to get it to work.

I've tried making my xorg.conf video section look like this:

Code:

# 
# *********************************************************************
# Monitor section
# **********************************************************************

Section "Monitor"
    Identifier  "My Monitor"
    HorizSync   30-121
    VertRefresh 48-160
EndSection

# **********************************************************************
# Graphics device section
# **********************************************************************

# Device configured by xf86config:
Section "Device"
    Identifier  "NVIDIA"
    Driver      "nvidia"     Not my exact driver, I'm at work and can't remember mine
    VideoRam 131072

EndSection

# **********************************************************************
# Screen sections
# **********************************************************************

Section "Screen"
    Identifier  "Screen0"
    Device      "NVIDIA"
    Monitor     "My Monitor"
    DefaultDepth 24

    Option "NvAGP" "1" 
    Option "TwinView" "true"
    Option "SecondMonitorHorizSync" "30.0-121.0"
    Option "SecondMonitorVertRefresh" "48.0-160.0"
    Option "MetaModes" "1280x1024, 1280x1024; 1280x1024, 1280x1024;"
    Option "TwinViewOrientation" "RightOf"
    Option "Xinerama" "on"
    Option "Clone" "off"
  
    Subsection "Display"
        Depth       8
        Modes       "1280x1024"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth       16
        Modes       "1280x1024"
        ViewPort    0 0
    EndSubsection
    Subsection "Display"
        Depth       24
        Modes       "1280x1024"
        ViewPort    0 0
    EndSubsection
EndSection

# **********************************************************************
# ServerLayout sections.
# **********************************************************************

Section "ServerLayout"
    Identifier  "Layout"

    Screen 0 "Screen0" 0 0

    InputDevice "Mouse1" "CorePointer"
    InputDevice "Keyboard1" 

EndSection

But then it just stretches the screen across the two monitors and sets the resolution on each to 1024x768. Plus it makes the backgroud look weird and and full screen games stratch across both, which is really annoying.

Now I know that with my Radeon card I could set up two separate screens, monitors and video devices. Allowing each screen to basically be a separate X instance. I can't seem to figure out how to do this with my GeForce. I can only find one PCI bus allocated to the GeForce and when I try to put 2 monitors and 2 screens in xorg.conf with each using the same device I still only get the main screen active.

Could anyone give me some pointers on how to get this to work? I would appreciate any help.

leonscape · 07-25-2005, 01:42 PM

Well basically you'ce set every resolution to be 1280x1024, so change

Option "MetaModes" "1280x1024, 1280x1024; 1280x1024, 1280x1024;"

to

Option "MetaModes" "1280x1024, 800x600"

As for the stretch this is Xinerama you must disable the xorg one for the nvidia one to work properly, to turn it on you need it in the server flags

Section "ServerFlags"
Option "Xinerama" "false"
EndSection

This may or may not work I currently don't have a second monitor to check.