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Old 07-24-06, 05:02 PM   #1
mdevlin
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Join Date: Nov 2005
Posts: 1
Default problems with 2nd display using twinview on a geforce 6800 in linux

Hi,
I have a GeForce 6800 with 2 ViewSonic VX2025WM LCD monitors. My computer is running Unbuntu 6.06 (Dapper).

The problem I am having is that I cant get twinview to work on both display using the The native resolution for the monitors of 1680x1050. When I try the first screen will work fine at 1680x1050, but the 2nd screen will just remain black. The log for X does not complain about anything, and it correctly sets the virtual screen size to 3360x1050 and correctly identifies both monitors.

If I change the Twinview line in the X config to 1680x1050,1280x1024 both screens work, but I would like the 2nd screen to actually use 1680x1050.

Any ideas what could be wrong? my X config is below.

Code:
Section "Screen"
     Identifier          "Screen0"
     Device             "Card0"
     Monitor            "Monitor0"
     DefaultDepth     24
     Option             "RenderAccel" "True"
     Option             "HWcursor"
     Option             "CursorShadow"
     Option             "CursorShadowAlpha" "32"
     Option             "CursorShadowXOffset" "3"
     Option             "CursorShadowYOffset" "3"
     Option             "AllowGLXWithComposite" "True"
     Option             "TwinView"
     Option             "NoLogo" "1"
     Option             "MetaModes" "1680x1050,1280x1024"
     Option             "SecondMonitorHorizSync" "UseEdidFreqs"
     Option             "SecondMonitorVertRefresh" "UseEdidFreqs"
     Option             "TwinViewOrientation" "RightOf"
     Option             "ConnectedMonitor" "DFP,DFP"
     SubSection       "Display"
          Depth         24
          Modes     "1680x1050" "1600x1200" "1440x900" "1400x1050" "1280x1024"
    EndSubSection
EndSection
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Old 07-24-06, 08:04 PM   #2
Saibot
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Join Date: Jul 2004
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Posts: 136
Default Re: problems with 2nd display using twinview on a geforce 6800 in linux

Not really sure what's wrong with yours, but I've got twinview working perfectly here on a couple of Samsung LCDs. Maybe something in my xorg will help you out. I'm running Ubuntu 6.06 also.


Code:
Section "Monitor"
    Identifier     "SyncMaster"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "NVIDIA Corporation NVIDIA Default Card"
    Driver         "nvidia"
    Option         "ConnectedMonitor"  "DFP, DFP"
    Option         "TwinView"          "1"
    Option         "TwinViewOrientation"  "RightOf"
    Option         "MetaModes"        "1600x1200,1600x1200; 1280x960,1280x960; 1152x864,1152x864; 1600x1200,NULL"
    Option         "RenderAccel"      "true"
EndSection

Section "Screen"
    Identifier     "Default Screen"
    Device         "NVIDIA Corporation NVIDIA Default Card"
    Monitor        "SyncMaster"
    DefaultDepth    24
    SubSection     "Display"
        Depth       1
        Modes      "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       4
        Modes      "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       8
        Modes      "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       15
        Modes      "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       16
        Modes      "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection
    SubSection     "Display"
        Depth       24
        Modes      "1600x1200" "1280x1024" "1280x960" "1152x864" "1024x768" "832x624" "800x600" "720x400" "640x480"
    EndSubSection
EndSection
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