The /dev/serial0 link is created by a udev rule.
The 6.12 update is closer to the upstream device-tree / sys-fs setup and unfortunately that breaks the udev rule. We are working on updating the udev rules because unless there's a very simple downstream patch it makes sense to follow upstream
There's a WIP udev rule here
https://github.com/timg236/raspberrypi- ... ee/serial0
Reboot, or to test with /dev/ttyS0 or /dev/ttyAMA0 if you have dtoverlay=disable-bt in config.txt
The 6.12 update is closer to the upstream device-tree / sys-fs setup and unfortunately that breaks the udev rule. We are working on updating the udev rules because unless there's a very simple downstream patch it makes sense to follow upstream
There's a WIP udev rule here
https://github.com/timg236/raspberrypi- ... ee/serial0
Code:
git clone https://github.com/timg236/raspberrypi-sys-mods --branch serial0# Backup current filecp /etc/udev/rules.d/99-com.rules $HOMEsudo cp raspberrypi-sys-mods/etc.armhf/udev/rules.d/99-com.rules /etc/udev/rules.dCode:
sudo udevadm test /dev/ttyS0Statistics: Posted by timg236 — Mon Apr 07, 2025 4:36 pm