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Old 02-23-2013, 05:05 PM   #1
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nVvidia TwinView mini displayport for second monitor? Thinkpad + debian

Here is the configuration:

Debian 6.0.6
Kernel: Linux nardev 3.2.0-0.bpo.3-amd64
NVIDIA Driver Version: 295.59
Monitor #1: acer 22" 1680x1050
Monitor #2: acer 19" 1440x900

Goal is to make them work in TwinView one next to another.

Monitor #1 is connected to regular VGA port and i can set it normaly via nvidia-settings

Monitor #2 is connected via mini displayport, through some cheep "mini displayport to VGA" that i got from ebay.

Unfortunately, i can't make this second one work properly.
in nvidia-settings it doesn't offer me proper resolution. Maximum that is offered is 640x480 although, as i just connected it today, it also offered me some non standard, higher resolutions for this display.

I tried to edit xorg.conf manually, but it seems that i ether didn't know how or it couldn't work like that.

Any help is appreciated.
Old 02-25-2013, 03:48 AM   #2
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This is for twinview, but one big desktop

My other monitor is just listed as CRT ""metamodes" "DFP: 1920x1080 +0+0, CRT: nvidia-auto-select +1920+0""

CRT is right of DFP

CRT uses DPMS for default screen size of 1280x1024, 60Hz. (CRT Acer AL1716, vga lcd panel)
#TwinView is a mode of operation where two display devices (digital flat panels, CRTs, and TVs) can display the contents of a single X screen in any arbitrary configuration. This method of multiple monitor use has several distinct advantages over other techniques (such as Xinerama):
# A single X screen is used. The NVIDIA driver conceals all information about multiple display devices from the X server; as far as X is concerned, there is only one screen.
# Both display devices share one frame buffer. Thus, all the functionality present on a single display (e.g., accelerated OpenGL) is available with TwinView.
# No additional overhead is needed to emulate having a single desktop.
# ref.
This is not the complete file, I left out mouse and keys sections.
Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"

Section "Files"
    FontPath        "/usr/share/fonts/default/Type1"

Section "Module"
    Load           "dbe" # Double-Buffering Extension
    Load           "v4l" # Video for Linux
    Load           "extmod"
    Load           "glx" # 3D layer
    Disable        "dri"

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "1"
    Option         "TwinViewXineramaInfoOrder" "DFP-0"
    Option         "metamodes" "DFP: 1920x1080 +0+0, CRT: nvidia-auto-select +1920+0"
    SubSection     "Display"
        Depth       24

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "BenQ G2420HD"
    HorizSync       24.0 - 83.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
I hope you can cross reference this and maybe get the solution.

Cheers Glenn

Last edited by GlennsPref; 02-25-2013 at 03:55 AM.


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