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Am troubleshooting a couple of video issues with no luck so far. I have a custom BSP based on the i.MX6Q device and a Ubuntu Linux file system. I have ...
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  1. #1
    Just Joined!
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    Allen, TX
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    Ubuntu Video Issues


    Am troubleshooting a couple of video issues with no luck so far. I have a custom BSP based on the i.MX6Q device and a Ubuntu Linux file system. I have two video sources - one HDMI monitor and one LVDS flat panel. The issues are:

    1. Under the Ubuntu GUI selecting “Displays…” indicates only one monitor and it is identified as unknown. The other monitor is not identified but can still be used to display video.

    2. Cannot stretch the desktop across multiple monitors. Have tried to edit the xorg.conf settings with no luck. If I enable the “Xinerama” option, then the display menu selection returns “RANDR extension is not present”. Current xorg.conf file.

    Section "ServerLayout"
    Identifier "Dual Layout"
    Screen 0 "Screen0" 0 0
    Screen 1 "Screen1" RightOf "Screen0"
    InputDevice "Generic Keyboard"
    InputDevice "Configured Mouse"
    EndSection

    Section "InputDevice"
    Identifier "Generic Keyboard"
    Driver "kbd"
    Option "XkbRules" "xorg"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "us"
    EndSection

    Section "InputDevice"
    Identifier "Configured Mouse"
    Driver "mouse"
    Option "CorePointer"
    EndSection

    Section "Monitor"
    Identifier "Monitor0"
    VendorName "Samsung"
    ModelName "SQ04"
    Option "dpms"
    EndSection

    Section "Monitor"
    Identifier "Monitor1"
    ModelName "CLAA102"
    Option "dpms"
    EndSection

    Section "Device"
    Identifier "i.MX_FBDev0"
    Driver "vivante"
    Screen 0
    Option "fbdev" "/dev/fb0"
    Option "vivante_fbdev" "/dev/fb0"
    Option "HWcursor" "false"
    EndSection

    Section "Device"
    Identifier "i.MX_FBDev1"
    Driver "vivante"
    Screen 1
    Option "fbdev" "/dev/fb2"
    EndSection

    Section "Screen"
    Identifier "Screen0"
    Device "i.MX_FBDev0"
    Monitor "Monitor0"
    SubSection "Display"
    Viewport 0 0
    Depth 24
    Modes "1280x720"
    EndSubSection
    EndSection

    Section "Screen"
    Identifier "Screen1"
    Device "i.MX_FBDev1"
    Monitor "Monitor1"
    SubSection "Display"
    Viewport 0 0
    Depth 18
    Modes "1024x600"
    EndSubSection
    EndSection

    Any insight or suggestions is appreciated. Thanks in advance.

  2. #2
    Administrator MikeTbob's Avatar
    Join Date
    Apr 2006
    Location
    Texas
    Posts
    7,864
    Try renaming xorg.conf to something simple like xorg.conf.old, reboot the machine and see what happens. Xorg can boot without a config file...the question is, will it work properly? If it doesn't work, rename that file back to xorg.conf and try something else. What kind of video card is it?
    Make sure that all monitors are set to VGA as it may help detect them better but this is just a guess.
    I do not respond to private messages asking for Linux help, Please keep it on the forums only.
    All new users please read this.** Forum FAQS. ** Adopt an unanswered post.

    I'd rather be lost at the lake than found at home.

  3. #3
    Just Joined!
    Join Date
    Apr 2013
    Posts
    14
    what card are you using i had aloot of tttroubleeee configing my nvs 290 so i just used it as extend and finaly just went to oneeeee moniter if i didnt install updddddates duuuuring inssssstal then axtivate recommendded driver it wouldent boot into a gggui on second boot up sorry for the extra characters immm using a bt kkkeyboard aaand its not cooooperating
    thanks dc

    Sent from my GT-N8013 using Tapatalk HD

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