How to disable Twinview

**firekage** · December 26th, 2012

Hi.

I need Your help. Could You help me?

I have problem with TwinView with nVidia drivers on Ubuntu 12.04. I user 310.19 but this problem occurs on all nvidia drivers - exept nouveau.

It is related to recognizing more than one screen, and that is not right - i have only one.

It looks like on attached picture. When i boot to ubuntu destkop nvidia sees two screens and my picture is stretched to both of them. Some screen goes for "fake crt" (i don't have crt), and rest goes for my LCD flat screen (HP).

Is there a way to completly disable TwinView, prevent it from working, from detecting more than one screen when, in fact, i have only one?

I think that option in Xorg.conf "TwinView" "off" doesen't help:

Code:

firekage@deusex:~$ cat /etc/X11/xorg.conf
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 310.19  (buildmeister@swio-display-x86-rhel47-11)  Thu Nov  8 00:25:56 PST 2012

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 310.19  (buildmeister@swio-display-x86-rhel47-11)  Thu Nov  8 00:26:06 PST 2012

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

Section "Files"
    FontPath        "unix/:7100"
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      "HP w2228h"
    HorizSync       24.0 - 83.0
    VertRefresh     48.0 - 76.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 260"
EndSection

Section "Screen"

# Removed Option "metamodes" "nvidia-auto-select +0+0; nvidia-auto-select +0+0; nvidia-auto-select +0+0"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option "TwinView" "off"
    Option "TwinView "false"
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-0"
    Option         "metamodes" "1680x1050 +0+0; nvidia-auto-select +0+0; nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

firekage@deusex:~$

Maybe it is related to "metamodes" and the rest after it?

When i boot up, and when nvidia detects more than one screen, i have ti "fight" in order to disable it but after reboot the same thing happens. If im lucky, than i'm able to run terminal, and in it run nvidia-settings (but it often runs in "crt fake screen" and i can't set up it because it is on far left "fake screen").

I attached second picture, it shows how it looks when "second screen" is detected - i have only one!

**firekage** · December 27th, 2012

Help? Anyone?

**firekage** · December 28th, 2012

Up...

**firekage** · December 29th, 2012

Up.

**crk** · December 29th, 2012

What happens when you choose "Detect Displays" in Nvidia X Server Settings?

Nvidia X Server Settings > X Server Display Configuration -> Detect Displays

If it shows you just one display, you could configure it as per your requirements and then before exiting the program, use the "Save to X Configuration File" option to overwrite your xorg.conf with the current settings.

That should ensure proper behaviour across reboots.

**MichaelGld** · December 29th, 2012

I had a similar problem, except I actually had two monitors hooked up to my Nvidia GeForce 8400 GS. The second monitor was being used as a tv. I couldn't get the screen to show everything. You could see the missing part when rotating the Compiz Cube I had enabled. I had Conky and Cairo Dock running, but I couldn't access them. My Nvidia X-server Settings tool would always default to the secondary monitor with Twinview.

What worked for me was unplugging the secondary monitor from my video card and rebooting. I know this probably won't help you, but the problem is so similar I thought it might help someone.

**firekage** · December 30th, 2012

Originally Posted by crk

What happens when you choose "Detect Displays" in Nvidia X Server Settings?

Nvidia X Server Settings > X Server Display Configuration -> Detect Displays

If it shows you just one display, you could configure it as per your requirements and then before exiting the program, use the "Save to X Configuration File" option to overwrite your xorg.conf with the current settings.

That should ensure proper behaviour across reboots.

That's the problem...when i click on 'detect displays" here is what happens - attached screen. Don't know why. I have only one screen. I was luckily enough because on this picture i caught exacly how the screen looks like when the problem occurs. One small screen, one big screen with just one flat screen! Strange...

**pqwoerituytrueiwoq** · December 30th, 2012

in my moms /etc/X11/xorg.conf the second monitor is off by default i did this by usign nvidia settings, this is the code it used to do it

Code:

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: NULL"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

i have her system using the xorg edgers ppa

**firekage** · January 12th, 2013

Originally Posted by pqwoerituytrueiwoq

in my moms /etc/X11/xorg.conf the second monitor is off by default i did this by usign nvidia settings, this is the code it used to do it

Code:

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0, DFP-1: NULL"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

i have her system using the xorg edgers ppa

Thank You. I will try this.