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Thread: neither /boot/vc/config.txt nor /boot/efi/config.txt work

  1. #1

    neither /boot/vc/config.txt nor /boot/efi/config.txt work

    I tried these parameters but they seemed to be ignored.

    Not sure why there is /boot/vc/config.txt and also /boot/efi/config.txt

    # Disable the power led
    dtparam=pwr_led_trigger=none
    dtparam=pwr_led_activelow=off
    # disable wifi and bluetooth
    dtoverlay=pi3-disable-wifi
    dtoverlay=pi3-disable-bt

  2. #2

    Re: neither /boot/vc/config.txt nor /boot/efi/config.txt work

    asnrcw,

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  3. Re: neither /boot/vc/config.txt nor /boot/efi/config.txt wor

    Quote Originally Posted by asnrcw View Post
    I tried these parameters but they seemed to be ignored.

    Not sure why there is /boot/vc/config.txt and also /boot/efi/config.txt
    The /boot/vc directory is on your root file system (and thus the reference for updates, etc) while the /boot/efi one is on the separate VFAT partition. The one in use is /boot/efi/config.txt.

    Quote Originally Posted by asnrcw View Post
    # Disable the power led
    dtparam=pwr_led_trigger=none
    dtparam=pwr_led_activelow=off
    # disable wifi and bluetooth
    dtoverlay=pi3-disable-wifi
    dtoverlay=pi3-disable-bt
    The dtoverlay option does not have any effect in the SLES12SP2 image, as the device tree will get overwritten by U-Boot again.

    Instead, you would need to either

    a) create a boot.scr file that applies the dt overlays or
    b) create a full dtb file at dtb/$fdtfile that has the overlay

  4. Re: neither /boot/vc/config.txt nor /boot/efi/config.txt wor

    For reference, I'm currently working on loosening up that situation, so that you can use the dtoverlay option. But that's nothing that will get integrated for SLES12SP2, as that code base is stable as is.

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