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Old 08-22-07, 10:42 PM   #13
netllama
NVIDIA Corporation
 
Join Date: Dec 2004
Posts: 8,763
Default Re: Ubuntu - Nvidia driver with dvi monitor distorted

Try adding this:
Option "ModeValidation" "NoDFPNativeResolutionCheck"
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Old 08-22-07, 10:51 PM   #14
antaeus
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Join Date: Aug 2007
Posts: 9
Default Re: Ubuntu - Nvidia driver with dvi monitor distorted

Now, I get:

(WW) NVIDIA(0): Unable to use mode "1024x768" for DFP-0; cannot compute
(WW) NVIDIA(0): backend DFP timings (mode is larger than native backend
(WW) NVIDIA(0): 640 x 480).
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Old 08-22-07, 11:04 PM   #15
netllama
NVIDIA Corporation
 
Join Date: Dec 2004
Posts: 8,763
Default Re: Ubuntu - Nvidia driver with dvi monitor distorted

Try adding this:
Option "ExactModeTimingsDVI" "true"
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Old 08-23-07, 11:29 PM   #16
antaeus
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Join Date: Aug 2007
Posts: 9
Default Re: Ubuntu - Nvidia driver with dvi monitor distorted

That worked! Thanks netllama for all your help. :-)

Although, not on the first try. I had the wrong HorizSync "31.5 - 48.4", just something I chose haphazardly, so the Ubuntu login screen was burned into my pixels for an hour or so.

While the pixels were returning to normal, I booted into windows and checked the settings with my monitor's on screen menu. It was running 63.9 KHz and 60Hz.

2nd try was a success! I tried to use a depth of 32, but the X server didn't start b/c it thought 32 was not supported, resulting in no supported screen modes. Any way to ignore this, too?

My xorg.conf looks like this now:

Section "Monitor"
Identifier "Generic Monitor"
HorizSync 61 - 64
VertRefresh 60
Option "DPMS"
EndSection

Section "Device"
Identifier "nVidia Corporation NV25 [GeForce4 Ti 4200]"
Driver "nvidia"
Option "UseEDID" "False"
Option "ExactModeTimingsDVI" "true"
Option "ModeValidation" "NoDFPNativeResolutionCheck"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation NV25 [GeForce4 Ti 4200]"
Monitor "Generic Monitor"
DefaultDepth 16
SubSection "Display"
Depth 16
Modes "1280x1024" "1152x864" "1024x768" "800x600"
EndSubSection
SubSection "Display"
Depth 32
Modes "1280x1024" "1152x864" "1024x768" "800x600"
EndSubSection
EndSection
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Old 04-30-10, 02:41 PM   #17
Osiekhan
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Join Date: Apr 2010
Posts: 1
Default Re: Ubuntu - Nvidia driver with dvi monitor distorted

I had the exact same issue. (the screenshot posted at the start of the thread).

You guys also helped me resolve my issue. Here's my xorg.conf to help with anyone else that might run into this issue.

Using T85-D monitor and an nvidia n200 video card via DVI.

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

Section "Files"
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"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    HorizSync      61 - 64
 #   HorizSync       28.0 - 33.0
 #   VertRefresh     43.0 - 72.0
    VertRefresh    60
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    Option "UseEvents" "True"
    Option "UseEDID" "False"
    Option "ExactModeTimingsDVI" "true"
    Option "ModeValidation" "NoDFPNativeResolutionCheck"
EndSection


Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    SubSection "Display"
    Depth 16
    Modes "1280x1024" "1152x864" "1024x768" "800x600"
    EndSubSection
    SubSection "Display"
    Depth 32
    Modes "1280x1024" "1152x864" "1024x768" "800x600"
    EndSubSection
    SubSection     "Display"
        Depth       24
    Modes "1280x1024" "1152x864" "1024x768" "800x600"
    EndSubSection
EndSection
Also, my machine boots up with that error. When KDM/XDM starts, and xorg kicks in, the screen clears itself up.
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