LVDS and HDMI at the same time on ubuntu

Discussion in 'General Discussion' started by henriksan2, May 30, 2014.

  1. henriksan2

    henriksan2 New Member

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    how do you run output on hdmi and lvds at the same time on ubuntu 12.0.4?
    can you run 2 applications with one of them outputting to lvds and the other to hdmi?
     
    henriksan2, May 30, 2014
    #1
  2. delba

    delba Administrator Staff Member

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    Not at the moment. You can Boot android from both LVDS and HDMI (not Linux) but you cannot run 2 applications in 2 different output.
     
    delba, Jun 4, 2014
    #2
  3. henriksan2

    henriksan2 New Member

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    is running 2 applications on the the 2 separate outputs a hardware restriction or software?
     
    henriksan2, Jun 7, 2014
    #3
  4. miousername

    miousername New Member

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    Hi,
    you can run an hardware accelerated application in the first hdmi screen ( opengl,opengles, video) and launch a video in the second screen with udoo.
    You have to setup correctly bootargs in this way:
    hdmi + lvds
    video=mxcfb0:dev=hdmi,1920x1080M@60,if=RGB24 video=mxcfb1:dev=ldb,LDB-WVGA,if=RGB666

    From commandline launch this command:

    root@udoo# cat /proc/cmdline

    In this way you can control that bootargs are correctly setted.
    Now launch a graphical application in this way:
    root@udoo# export DISPLAY=:0
    root@udoo# cd /opt/vivsamples/vdk

    root@udoo#./tutorial3_es20 & <- launch application in hdmi screen
    root@udoo# gst-launch playbin2 uri=file:///path/to/video.mp4 video-sink="mfw_v4lsink device=/dev/video17" <- launch video in lvds screen
     
    miousername, Jun 7, 2014
    #4

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