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Thread: Dual Monitor Problem

  1. #1
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    Default Dual Monitor Problem

    Hi everyone,

    I am using Intel D2500 embedded board with HDMI and VGA ports. When I install opensuse 12.3 with XFCE DE I am unable to get display on both the monitors at a time. My Graphic Card Info.

    Code:
    #/sbin/lspci  -nnk | grep VGA -A200:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller [8086:0be1] (rev 09)
        Subsystem: Foxconn International, Inc. D270S/D250S Motherboard [105b:0d7c]
        Kernel driver in use: gma500
    xrandr output

    Code:
    xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 2048 x 2048
    VGA-0 connected (normal left inverted right x axis y axis)
       1366x768       59.8 +
       1360x768       60.0  
       1280x800       59.8  
       1280x768       59.9  
       1024x768       75.1     70.1     60.0  
       1024x576       60.0  
       800x600        72.2     75.0     60.3     56.2  
       848x480        60.0  
       640x480        72.8     75.0     60.0  
       720x400        70.1  
    LVDS-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
       1024x768       60.0*+
       960x720        60.0  
       928x696        60.1  
       896x672        60.0  
       800x600        60.0     60.3     56.2  
       700x525        60.0  
       640x512        60.0  
       640x480        60.0     59.9  
       512x384        60.0  
       400x300        60.3     56.3  
       320x240        60.1  
    DVI-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
       1920x1080      60.0 +   50.0  
       1680x1050      59.9  
       1680x945       60.0  
       1400x1050      74.9     74.8     60.0     59.9  
       1600x900       60.0  
       1280x1024      75.0     60.0  
       1440x900       75.0     59.9  
       1280x960       60.0  
       1366x768       60.0  
       1360x768       60.0  
       1280x800       74.9     59.9  
    DisplayPort-0 disconnected (normal left inverted right x axis y axis)
    Code:
    > xrandr --auto
    xrandr: cannot find crtc for output VGA-0


    Thanks in Advance


  2. #2
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    Default Re: Dual Monitor Problem

    Code:
    #/sbin/lspci  -nnk | grep VGA -A200:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller [8086:0be1] (rev 09)
        Subsystem: Foxconn International, Inc. D270S/D250S Motherboard [105b:0d7c]
        Kernel driver in use: gma500
    1. I know this hardware has been problematic for some users, but some of the issues reported may well have been fixed with later kernel releases, so upgrading the kernel may be one option for you to consider.

    2. Does the following execute without error? It may yield more info about the CRTC(s). Assuming it works, post the info here. Someone may be able to advise further.
    Code:
    xrandr --verbose
    3. This XFCE page is Ubuntu-based but should still be relevant

    http://askubuntu.com/questions/62681...nitors-in-xfce

  3. #3
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    Default Re: Dual Monitor Problem

    Quote Originally Posted by deano_ferrari View Post
    [/CODE]

    2. Does the following execute without error? It may yield more info about the CRTC(s). Assuming it works, post the info here. Someone may be able to advise further.
    Code:
    xrandr --verbose
    output of xrandr --verbose is here

  4. #4
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    Default Re: Dual Monitor Problem

    I am unable to turn on both monitors from display settings. and I will also try upgrading the kernel.

  5. #5
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    Default Re: Dual Monitor Problem

    Quote Originally Posted by nishanth9042 View Post
    I am unable to turn on both monitors from display settings. and I will also try upgrading the kernel.
    Are you trying to connect 2 external displays concurrently, as well as the laptop (LVDS1) display? I don't think that's possible. Your xrandr output shows that the laptop display (LVDS1) is using CRTC 1 and the DVI-connected monitor is using CRTC 0.

  6. #6
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    Default Re: Dual Monitor Problem

    Quote Originally Posted by deano_ferrari View Post
    Are you trying to connect 2 external displays concurrently, as well as the laptop (LVDS1) display? I don't think that's possible. Your xrandr output shows that the laptop display (LVDS1) is using CRTC 1 and the DVI-connected monitor is using CRTC 0.
    Yes I want to turn off the laptop display and turn on the VGA display along with DVI display. Is it possible?

  7. #7
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    Default Re: Dual Monitor Problem

    Quote Originally Posted by nishanth9042 View Post
    Yes I want to turn off the laptop display and turn on the VGA display along with DVI display. Is it possible?
    It depends on the hardware I guess. It may be a process of trial and error. I've never owned a laptop with more than one graphics output. Maybe you can try turning on the DVI-connected monitor with
    Code:
    xrandr --output DVI-0 --auto
    then turn off the laptop display
    Code:
    xrandr --output LVDS-0 --off
    then (from the external monitor)
    Code:
    xrandr --output VGA-0 --auto
    If that works, you may be able to generate a small bash script to simplify switching the required displays on or off.

  8. #8
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    Default Re: Dual Monitor Problem


  9. #9
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    Default Re: Dual Monitor Problem

    I have tried these commands in order.
    1.First turn off the LVDS-0
    Code:
    >xrandr --output LVDS-0 --off
    2.Turn on the VGA display after turning off the DVI display.

    Code:
    xrandr --output DVI-0 --off && xrandr --output VGA-0 --auto
    3. Now turn on the DVI display

    Code:
    xrandr --output DVI-0 --auto
    4. Adjust the screens using arandr

    Now the display is visible in both the monitors but unable to set the resolution more than 1024x768 in both the monitors

  10. #10
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    Default Re: Dual Monitor Problem

    I think the problem will be solved if we can increase the maximum resolution.

    Code:
    xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 2048 x 2048
    Can we increase the maximum 2048x2048 ?

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