Enabling a uart dtoverlay on ubuntu server 20.04 for RPi4 stops it from booting

Asked by Emile Akbarzadeh on 2020-07-22

Hi all,
I recently upgraded my Raspberry Pi 4 from Ubuntu 18 to 20. In the boot/usrcfg.txt file, I have the following to enable one of the uarts: dtoverlay=uart3

Unfortunately this causes the pi to not boot at all. I have verified that when the offending line is removed, it boots fine. Furthermore I have tried using different values from uart1-uart5 - all result in the pi showing activity lights and then staying dead with no screen output at all.

I downgraded to ubuntu 18 and tried it again and it worked perfectly fine.

Thanks for your help!

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Last query:
2020-07-22
Last reply:
2020-08-06
Launchpad Janitor (janitor) said : #1

This question was expired because it remained in the 'Open' state without activity for the last 15 days.