Public bug reported:
I'm using the popular PL2303 to convert the USB signal from my computer
to UART TTL signal by connecting it to the Raspberry Pi GPIO pins,
following the guide here: https://cdn-learn.adafruit.com/downloads/pdf
/adafruits-raspberry-pi-lesson-5-using-a-console-cable.pdf
I have done this with my mac, and it works fine, but I tried with 18.04
and 20.04, and it doesn't appear to send any output to the serial
console, although it does seem to receive it for a while if you have
screen listening to /dev/ttyUSB0 while rebooting the pi, but after a few
seconds, it stops outputting anything.
It does work on Ubuntu 16.04, so I'm not sure exactly what changed
there, but maybe that's a starting point.
I'm also kind of a noob with this stuff, so if anyone can tell me how to
load the kernel module for 16.04 for the UART TTY stuff, that would be
great as well.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.8.0-44-generic 5.8.0-44.50~20.04.1
ProcVersionSignature: Ubuntu 5.8.0-44.50~20.04.1-generic 5.8.18
Uname: Linux 5.8.0-44-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.16
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Mar 2 20:10:03 2021
InstallationDate: Installed on 2020-08-19 (195 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe-5.8 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1917543
Title:
can't connect to raspberry pi UART TTL
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-signed-hwe-5.8/+bug/1917543/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
