Take the 2-minute tour ×
Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free, no registration required.

I have Ubuntu 10.10 x86_64 with Nvidia 9800 gt and Nvidia driver version 270.41.06

My video card has two DVI sockets, but I only use the single monitor configuration. Now, I think the main DVI socket might be busted, so I want to try to enable the other as the main one, however, I don't know how to achieve that. I tried just plugging the monitor in that socket but it won't auto-detect it (it would have been way too easy to just work).

This is my xorg.conf:

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
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"

    # HorizSync source: builtin, VertRefresh source: builtin
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "AOC"
    HorizSync       31.5 - 84.7
    VertRefresh     60.0 - 78.0
    ModeLine       "1080p" 172.8 1920 2040 2248 2576 1080 1081 1084 1118 -hsync +vsync
    Option         "DPMS"
EndSection


Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 9800 GT"
EndSection

Section "Screen"

# Removed Option "metamodes" "1024x768 +0+0"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "CustomEDID" "CRT-0:/home/charlesq/lg.bin"
    Option         "TVStandard" "HD1080p"
    Option         "TwinView" "0"
    Option         "TwinViewXineramaInfoOrder" "CRT-0"
    Option         "metamodes" "1080p +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
share|improve this question

1 Answer 1

up vote 1 down vote accepted

Do you have some way of controlling the computer now? Can you SSH in? Last resort: Pull the disk out, stick it in another computer and that will let you edit files.

Assuming you can get access to things, edit /etc/X11/xorg.conf as root (eg sudoedit /etc/X11/xorg.conf if you're sshed into or are on your computer).

You want to look at the screen section. There should be a Option "metamodes" line in there that might look something like:

Option         "metamodes" "DFP-0: 1920x1200"

Change DFP-0 to DFP-1 (or DFP-2 or DFP-3 if your card also has HDMI sockets). Save the file and boot up (or just run sudo restart gdm if you're on the machine over SSH)

share|improve this answer
    
yes i can definitely ssh to it –  lurscher Jun 30 '11 at 15:50
    
so, i will try to add DFP-0: to the metamodes options, but notice that i rely on the CustomEDID option to get right fullhd resolution, do i have to replace the CRT-0 to CRT-1 options too, as well the TwinViewXineramaInfoOrder? –  lurscher Jun 30 '11 at 15:55
    
it is sort of working, but i'm seeing the exact same issue that made me thought that the socket was busted; the image comes and goes inexplicably, just like if the cable was broken. I tested this cable and the vga/dvi converters with my laptop and they work fine, so it seems it might be the video card that is dying..... (sobs) –  lurscher Jul 2 '11 at 12:43

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.