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New gen4-4DCAPE-50CT-CLB with bone-debian-9.5-lxqt-armhf-2018-10-07-4gb.img.xz fails

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  • New gen4-4DCAPE-50CT-CLB with bone-debian-9.5-lxqt-armhf-2018-10-07-4gb.img.xz fails

    Hi, folks,

    I have a brand new gen4-4DCAPE-50CT-CLB with a brand new Beaglebone Black.

    I burned the uSD with the image from here:
    http://debian.beagleboard.org/images...-07-4gb.img.xz

    The Beaglebone Black starts up and I can log into it, but I'm not seeing any activity on the LCD.

    And I see this in the dmesg:

    Code:
    [    1.488828] bone_capemgr bone_capemgr: compatible-baseboard=ti,beaglebone-black - #slots=4
    [    1.535457] bone_capemgr bone_capemgr: slot #0: '4D 5.0 LCD CAPE - 4DCAPE-50CT,00A1,4D Systems,BB-BONE-4D5C-01'
    [    1.564060] bone_capemgr bone_capemgr: slot #1: No cape found
    [    1.592578] bone_capemgr bone_capemgr: slot #2: No cape found
    [    1.619434] bone_capemgr bone_capemgr: slot #3: No cape found
    [    1.619736] bone_capemgr bone_capemgr: initialized OK.
    [    1.624666] bone_capemgr bone_capemgr: loader: failed to load slot-0 BB-BONE-4D5C-01:00A1 (prio 0)

    Anybody have a suggestion--either for a fix or for a pointer to an image that works?

    Thanks.

    Code:
    root@beaglebone:~# uname -a
    Linux beaglebone 4.14.71-ti-r80 #1 SMP PREEMPT Fri Oct 5 23:50:11 UTC 2018 armv7l GNU/Linux
    Starts
    14th February 2019
    Ends
    14th February 2019
    Last edited by buzmeg; 14th February 2019, 10:49 AM.

  • #2
    Hi, welcome to the forum.

    May I know what power source you are using?
    By default, using DC jack powers the display but if you're using the usb jack, there is a need for you to connect the solder bridge in 4DCAPE adapter in order for the display to work.

    Best regards,
    Vince_4D

    Comment


    • #3
      It turns out that my issue was the version of u-boot on the eMMC as documented here:
      https://groups.google.com/forum/#!ca...ck/ZqL5cZenCd4

      Doing the following...

      Code:
      sudo dd if=/dev/zero of=/dev/mmcblk1 bs=1M count=10
      (CAUTION: This likely destroys the ability of your eMMC to boot by itself without a uSD card. You have been warned.)

      and rebooting cleared the issue and allowed the LCD to come up.

      This probably needs to go into the datasheet.

      (I am powering from a DC jack tied directly to my lab bench power supply. It may be shocking, but I did read the datasheet and noted Page 5 Section 3.2.6 as well as Page 7 Section 8.
      Last edited by buzmeg; 14th February 2019, 12:25 PM.

      Comment


      • #4
        Hi,

        I am glad that you were able to solve your problem on your own.
        We are currently making an update of the datasheet for the gen4-4DCAPES and planned to include the method you raised.
        Thank you for pointing that out.

        Best regards,

        Vince_4D

        Comment

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