Color rendering problem

Discussion in 'ZIDOO X6 Pro' started by Calvin Hobbes, Feb 4, 2016.

  1. Calvin Hobbes

    Calvin Hobbes New Member

    Guys, i got a color rendering problem with my zidoo x6.
    The tv and x6 connected via hdmi cable.
    Sometimes the screen blinks and a video (or menu) looks like this for couple a minutes.
    [​IMG]

    Does anyone know what the problem is?
     
    Last edited: Feb 4, 2016
  2. Calvin Hobbes

    Calvin Hobbes New Member

  3. cobra78

    cobra78 Member

    Phillips tv's are known for causing color problems on Android tv boxes.
    Time to get a non Phillips tv.
    In the mean time you can type this into a terminal app to fix the color.
    Must be rooted.
    To see all the values type cat /sys/class/display/display0.HDMI/color
    Then apply it with eg. echo mode=1 > /sys/class/display/display0.HDMI/color and change to something not 'auto'
     
    Apofisao likes this.
  4. Calvin Hobbes

    Calvin Hobbes New Member

    cobra78, thank you for reply. Can it be fixed by installing a new firmware?
    Hmm.. I`ll test it and say if it be any effect.
     
  5. Calvin Hobbes

    Calvin Hobbes New Member

    I`ve tried my X6 at Samsung & Sony tv. Works fine.
     
  6. Apofisao

    Apofisao New Member

    I have same problem with two televisions, a Sony and a Samsung. I don't know how to fix the problem and I'm thinking of returning the box
     
  7. cobra78

    cobra78 Member

    The fix was just posted above by me, didn't you read it?
     
  8. Apofisao

    Apofisao New Member

    I read your post but my device isn't rooted. I'll try as soon as possible (this afternoon) and I'll tell you the result. However, I tried to change the settings in the menu> Settings> Display> HDMI> and I set 1980p 60 htz, without results
    Thank you

    EDIT (15/02/2016:

    Hi, I rooted the device and I tried to follow the instructions but does not work. I tried to edit the file named "color" but I can't change the values shown in your post as it does not present
     
    Last edited: Feb 15, 2016
  9. Louis_Znd

    Louis_Znd New Member

     
  10. Louis_Znd

    Louis_Znd New Member

    In the x-6 box i have there is no such directory like ...display/display0.HDMI/ instead the directory .../display/HDMI/ exist
    so to solve the problem the next command should be executed
    echo mode=1 > /sys/class/display/HDMI/color
    This schould solve the problem.
     
  11. PacoRabanne

    PacoRabanne Well-Known Member Beta test group

    To summarize, I suppose that
    • the file "color" is in the folder /sys/class/display/HDMI/
    • if present, it contains some string and relevant value with a syntax like "variable=number" or "variable=string" (without the "")
    • to try to solve "that" problem, the value of the variable "mode" should be set to "1", modifying it if present or adding it inserting a new line with this string "mode=1" (without the "")
    Is it correct?
     
  12. cobra78

    cobra78 Member

    Have to set it with command in terminal app as root user.
    Since it's a kernel file, you can't just edit it.
    Different values
    0 - Auto (default)
    1 RGB 255 Color
    2 RGB 235 Color
    3 YUV
    4 YUV different

    Auto color setting doesn't work on all tv's and might set it to some YUV color mode some Phillips or Samsung tv's don't support, RGB color is supported on most tv's
    cat /sys/class/display/HDMI/color shows all the values
     
  13. PacoRabanne

    PacoRabanne Well-Known Member Beta test group

    Very clear. So could Zidoo add a Setting option to set this value? Or is not a good idea?
    For whom that don't want X6 rooted...
     
  14. cobra78

    cobra78 Member

    They can make a kernel with a default value.
    But for tv's that don't have a color problem, those people will get a purple,green startup screen but afterwards it's fine.
    So for people that don't have a problem at the moment it might introduce a color problem for the first few seconds when booting up.
     
  15. Louis_Znd

    Louis_Znd New Member

    I found a way to automatically switch the HDMI color-mode to 1 (RGB-mode) at start-up.
    I added a line at the end of the file /system/bin/smb.sh
    echo mode=1> /sys/class/display/HDMI/color
    Maybe is not really the proper place to put this line in, but it works fine.
    This way you get in fact a defualt value for color
     
  16. Apofisao

    Apofisao New Member

    Thanks .... I'm testing your solution, that is for me the easier, and now the device works fine. work in progress
     
  17. spring

    spring Guest

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