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TDA4VMXEVM: DisplayPort doesn't work with different displays

Grigory Kletsko
Prodigy 130 points

Part Number: TDA4VMXEVM

Hi,

I'm using run_app_dof.sh test and bsp j7_07_00_00_11. We have several different monitors with DisplayPort. Dell U2417H works fine and I can see demo UI. Dell U2415 doesn't work -- shows black screen. The first one has default resolution 1920x1080 and the second one 1920x1200. I assume that current PSDK doesn't support setting correct mode of the display via DP port.

Do you have solution for that? Because we have plenty of different displays, but applications always have standard resolutions (1920x1080 usually).

--

Grigory

  • 0
    TI__Guru**** 449835 points

    Hi Grigory,

    Do you mean second display does not support 1920x1080 resolution? 

    Can you try un-commenting below lines in the file psdk_rtos_auto_j7_07_00_00_11\vision_apps\utils\dss\src\app_dss_j721e.c?

    #if 0
    if(prm->display_type==APP_DSS_DEFAULT_DISPLAY_TYPE_EDP)
    {
    appDssConfigureDP();
    }
    #endif

    Rgds,

    Brijesh

  • 0 in reply to Brijesh Jadav
    Prodigy 130 points

    Hi Brijesh,

    I haven't tried that yet but I've found when I run the application that uses DP port with "bad" display and disconnect manually DP connection and then connect it back again -- pictures appears on the screen (while app is still running). I believe that Dell display checks the already incoming stream and reconfigures itself.

    I will try your advice and let you know.

    --

    Grigory