# Raspberry Pi 3 Model B/B+

**URL:** <https://hub.mender.io/t/raspberry-pi-3-model-b-b/57>\
**Category:** Yocto Project\
**Tags:** yocto, raspberry-pi, sumo, rocko, thud, warrior\
**Created:** [September 28, 2018, 1:07pm UTC](https://hub.mender.io/t/raspberry-pi-3-model-b-b/57 "2018-09-28T13:07:59Z")\
**Posts on this page:** 1\
**Showing post:** 31

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**Author:** ![electricworry](https://avatars.discourse-cdn.com/v4/letter/e/cab0a1/32.png) [@electricworry](https://hub.mender.io/u/electricworry)\
**Post date:** [June 10, 2023, 1:04pm UTC](https://hub.mender.io/t/raspberry-pi-3-model-b-b/57/31 "2023-06-10T13:04:57Z")

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I’m using kirkstone and I’m just getting started with Mender on RaspberryPi 3 Model B, and I’ve run into a problem that the device will not boot when meta-mender-raspberrypi is added and ENABLE\_UART=“1” is NOT set. It boots fine if ENABLE\_UART=“1” is added.

AFAIK, the only change this mades to the boot partition is to add `console=serial0,115200` to the cmdline.txt and `enable_uart=1` to config.txt.

I’ve started going down a [rabbit hole](https://github.com/raspberrypi/firmware/issues/1483) of suggestions. It sounds like Mender’s changes to u-boot may have regressed it such that it balks at the DTB when UART is not enabled, but this is way over my head.

Any suggestions? I can progress with learning for now with UART enabled but at some point I’d like to be able to turn it off.

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