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  • 4DPI-32 rev 1.3 problems

    Hello, my 4DPI-32 worked ok until of updating OS. Now new Raspbian was installed to SD card and after installing display drivers I got display working, but network stoped to work.
    Installation procedure from year 2018:
    1. Fresh raspbian installed
    2. wget http://www.4dsystems.com.au/download...34_v1.1.tar.gz
    3. sudo tar -xzvf gen4-hats_4-14-34_v1.1.tar.gz -C /
    4. sudo nano /boot/config.txt
    5. uncoment: #dtoverlay=4dpi-32

    So, what I am doing wrong or what am I missing here?

    Regards, Vlado



  • #2
    Hello Vlado,

    Please follow the instructions in the latest datasheet, it details the OS and Kernel Pack required, and the limitations of updating at the moment.
    Hopefully it is clear in the latest Datasheet from our website

    https://4dsystems.com.au/products/4dpi-32-ii

    https://4dsystems.com.au/mwdownloads...d/link/id/273/

    Specifically section 4.2

    Regards
    James
    James

    Comment


    • #3
      Hello James, I did use your image from the link, then:
      wget https://4dsystems.com.au/media/downl..._5-4-68.tar.gz
      next:
      sudo tar --no-same-owner -xzvf gen4-hats_5-4-68.tar.gz -C /
      shutdown rpi, then montage the 4DPI-32
      power on
      and black screen.
      I can see rpi is booting up, but ... ?

      Regards,
      Vlado

      Comment


      • #4
        Sorry you have a REV 1.3, my mistake. So no EEPROM on that model, so yes you will need to force it by the overlay, by uncommenting #dtoverlay=4dpi-32

        Did you try that with the new image?

        We have not updated that old model datasheet for some time now, not many people use those anymore.
        That is a 2014 era model, which was replaced in 2015 with the REV 2.0 which had EEPROM.
        Current version 2.1 came out in 2020.
        James

        Comment


        • #5
          I did try to find #dtoverlay=4dpi-32 in config.txt, but there is no such an option ...

          Regards, Vlado

          Comment


          • #6
            You have to add manually dtoverlay=4dpi-32 in boot/config.txt
            See my Post in Raspberry sektion I have a Rev 1.1 and works now
            you can Click my picture to See my posts
            Cheers Tom
            Last edited by advance; 30 July 2021, 09:34 PM.

            Comment


            • #7
              Thanks for responding Tom. I did exactly as you did, but it doesn't work for me.
              Code:
              #dtoverlay=vc4-fkms-v3d
              max_framebuffers=2
              dtoverlay=4dpi-32
              [all]
              #dtoverlay=vc4-fkms-v3d
              Regards, Vlado

              Comment


              • #8
                Which Pi do you use ?

                Comment


                • #9
                  I have RPi3B+. Just did second try of installation, same result as before.

                  Comment


                  • #10
                    Could you copy your config.txt here just to compare text inside it.

                    Comment


                    • #11
                      Code:
                      # For more options and information see
                      # http://rpf.io/configtxt
                      # Some settings may impact device functionality. See link above for details
                      
                      # uncomment if you get no picture on HDMI for a default "safe" mode
                      #hdmi_safe=1
                      
                      # uncomment this if your display has a black border of unused pixels visible
                      # and your display can output without overscan
                      #disable_overscan=1
                      
                      # uncomment the following to adjust overscan. Use positive numbers if console
                      # goes off screen, and negative if there is too much border
                      #overscan_left=16
                      #overscan_right=16
                      #overscan_top=16
                      #overscan_bottom=16
                      
                      # uncomment to force a console size. By default it will be display's size minus
                      # overscan.
                      #framebuffer_width=1280
                      #framebuffer_height=720
                      
                      # uncomment if hdmi display is not detected and composite is being output
                      hdmi_force_hotplug=1
                      
                      # uncomment to force a specific HDMI mode (this will force VGA)
                      hdmi_group=2
                      hdmi_mode=4
                      
                      # uncomment to force a HDMI mode rather than DVI. This can make audio work in
                      # DMT (computer monitor) modes
                      #hdmi_drive=2
                      
                      # uncomment to increase signal to HDMI, if you have interference, blanking, or
                      # no display
                      #config_hdmi_boost=4
                      
                      # uncomment for composite PAL
                      #sdtv_mode=2
                      
                      #uncomment to overclock the arm. 700 MHz is the default.
                      #arm_freq=800
                      
                      # Uncomment some or all of these to enable the optional hardware interfaces
                      dtparam=i2c_arm=on
                      #dtparam=i2s=on
                      dtparam=spi=on
                      
                      # Uncomment this to enable infrared communication.
                      #dtoverlay=gpio-ir,gpio_pin=17
                      #dtoverlay=gpio-ir-tx,gpio_pin=18
                      
                      # Additional overlays and parameters are documented /boot/overlays/README
                      
                      # Enable audio (loads snd_bcm2835)
                      dtparam=audio=on
                      
                      [pi4]
                      # Enable DRM VC4 V3D driver on top of the dispmanx display stack
                      #dtoverlay=vc4-fkms-v3d
                      max_framebuffers=2
                      dtoverlay=4dpi-35
                      [all]
                      #dtoverlay=vc4-fkms-v3d
                      
                      [pi0]
                      kernel=kernel_hat.img
                      
                      [pi1]
                      kernel=kernel_hat.img
                      
                      [pi2]
                      kernel=kernel7_hat.img
                      
                      [pi3]
                      kernel=kernel7_hat.img
                      
                      [pi4]
                      kernel=kernel7l_hat.img
                      
                      [all]
                      hdmi_force_hotplug=1
                      hdmi_drive=1
                      
                      enable_uart=1

                      Comment


                      • #12
                        Thanks Tom, I found only 4 diferences in files and I did test them with no luck. Black screen again.
                        Hope, James will come out with some solution...
                        Regards, Vlado

                        Comment


                        • #13
                          SPI and I2C also aktive?

                          Comment


                          • #14
                            yes, same settings as yours. I suppose you need uart for something else...

                            Comment


                            • #15
                              Hello,

                              Sorry for the weekend delay.

                              What is the jumper shunt set to on the back of the module? PWM or ON/OFF?

                              I am trying to find an old 4DPi-32 to try and emulate it, however I am not sure I have a module that old handy. I will report back if I find one.
                              James

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