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Old 01-01-2009, 06:17 AM   #1
marky9074
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Registered: Nov 2003
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Extending VGA over CAT5 - unable to get more than 1280x1024 on Nvidia

Hello.. and Happy New Year.

I have a server running a PNY Quadro NVS 285 with dual head. I have a Aten CE800 KVM extender and Black box VGA extender attached with both support 1600x1200, which is the native resolution of our Dell 2007FP monitors.

Now when I run with the monitors locally it comes up fine, and it is still OK when I connect up the extenders hot. But if I restart X the monitors are blank showing the 'change display input to 1600x1200'.

I assume that the nvidia driver probes the monitor every time X is started. Is there any way of disabling this? I am halfway there, so hopefully someone will have an idea.

The extenders obviously support the resolution, so it must be an X thing during start up..

Any help much appreciated,

Cheers,

Mark
 
Old 01-01-2009, 09:46 AM   #2
marky9074
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OK.. some slight development. Have saved the EDID bin using the nvidia setup and have one screen up at 1600x1200, the other all I can get is 1280x1024. You can see below the line added for EDID, but I have no idea how to enable this for the second head..

I thought it needed a complete second 'card/screen/monitor' combo, but the nvidia configuration just seems to get the second screen working by metamodes...

Code:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildmeister@builder58)  Thu Jul 17 18:39:42 PDT 2008


Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath         "/usr/X11R6/lib/X11/rgb"
    ModulePath      "/usr/X11R6/lib64/modules"
    FontPath        "/usr/X11R6/lib/X11/fonts/misc/"
    FontPath        "/usr/X11R6/lib/X11/fonts/TTF/"
    FontPath        "/usr/X11R6/lib/X11/fonts/Type1/"
    FontPath        "/usr/X11R6/lib/X11/fonts/CID/"
    FontPath        "/usr/X11R6/lib/X11/fonts/75dpi/"
    FontPath        "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
    Load           "vnc"
    Load           "dri"
    Load           "xtrap"
    Load           "dbe"
    Load           "glx"
    Load           "record"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
EndSection

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

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
    Option         "pc105"
    Option         "gb"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/mice"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "CRT-0"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 76.0
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "CRT-1"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 76.0
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 285"
    Option         "CustomEDID" "CRT-0:/root/edid.bin"
EndSection

Section "Screen"

# Removed Option "metamodes" "CRT-0: 1600x1200 +0+0, CRT-1: 1600x1200 +1600+0"
    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "1"
    Option         "TwinViewXineramaInfoOrder" "CRT-0"
    Option         "metamodes" "CRT-0: 1600x1200 +0+0, CRT-1: 1280x1024 +1600+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
 
Old 01-01-2009, 10:51 AM   #3
tredegar
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How about:
Code:
Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 285"
    Option         "CustomEDID" "CRT-0:/root/edid.bin"
    Option         "CustomEDID" "CRT-1:/root/edid.bin"
EndSection
As you say both monitors are the same, they should have the same EDID information. Maybe your "extender" doesn't cope well with the EDID information transfer.
 
Old 01-02-2009, 07:23 AM   #4
marky9074
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Registered: Nov 2003
Posts: 54

Original Poster
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OK, this one seems to work. The solution being to force the vertical refresh @60

Code:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildmeister@builder58)  Thu Jul 17 18:39:42 PDT 2008


Section "ServerLayout"
    Identifier     "X.org Configured"
    Screen      0  "Screen0" 0 0
    InputDevice    "Mouse0" "CorePointer"
    InputDevice    "Keyboard0" "CoreKeyboard"
EndSection

Section "Files"
    RgbPath         "/usr/X11R6/lib/X11/rgb"
    ModulePath      "/usr/X11R6/lib64/modules"
    FontPath        "/usr/X11R6/lib/X11/fonts/misc/"
    FontPath        "/usr/X11R6/lib/X11/fonts/TTF/"
    FontPath        "/usr/X11R6/lib/X11/fonts/Type1/"
    FontPath        "/usr/X11R6/lib/X11/fonts/CID/"
    FontPath        "/usr/X11R6/lib/X11/fonts/75dpi/"
    FontPath        "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"
    Load           "vnc"
    Load           "dri"
    Load           "xtrap"
    Load           "dbe"
    Load           "glx"
    Load           "record"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
EndSection

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

Section "InputDevice"
    Identifier     "Keyboard0"
    Driver         "kbd"
    Option         "pc105"
    Option         "gb"
EndSection

Section "InputDevice"
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/mice"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "CRT-0"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 76.0
EndSection

Section "Monitor"
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "CRT-1"
    HorizSync       30.0 - 83.0
    VertRefresh     56.0 - 76.0
EndSection

Section "Device"
    Identifier     "Videocard0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "Quadro NVS 285"
    Option         "CustomEDID" "CRT-0:/root/edid.bin"
EndSection

Section "Screen"

    Identifier     "Screen0"
    Device         "Videocard0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "ConnectedMonitor" "CRT-0, CRT-1"
    Option         "TwinView" "yes"
    Option         "Metamodes" "1600x1200,1600x1200"
    Option         "SecondMonitorHorizSync" "31-81"
    Option         "SecondMonitorVertRefresh" "60-60"
    Option         "NoPowerConnectorCheck"

SubSection     "Display"
        Depth       24
	Virtual	    3200 1200
    EndSubSection
EndSection
Last edited by marky9074; 01-02-2009 at 11:38 AM.
 
  


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