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IDProjectCategoryView StatusLast Update
0002972Alternative ArchitecturesGeneralpublic2023-04-21 20:34
ReporterDan Heath Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
PlatformRaspberry Pi CM4OSRocky LinuxOS Version8
Summary0002972: Rocky 8 uart serial console configuration missing/incomplete
DescriptionWhen attempting to use the implemented console configuration provided, the console port selected is incorrect. Also uart is not enabled although a console is setup.
Steps To Reproduce- attach uart cable (I'm using the ADAFRUIT Industries 954 USB-to-TTL Serial Cable)
- start uart session on client (screen /dev/ttyUSB0 115200 on connecting host)
- boot Raspberry Pi using Rocky Linux RockyRpi_8.7.img installed on usb storage

Result is no console output is produced on the console session.
Additional InformationThe following changes followed by a reboot resolve this issue for me:

Update /boot/cmdline.txt:
Original:
console=ttyAMA0,115200 console=tty1 root=PARTUUID=13381799-03 rootfstype=ext4 elevator=deadline rootwait
Updated:
console=serial0,115200 console=tty1 root=PARTUUID=13381799-03 rootfstype=ext4 elevator=deadline rootwait

Create /boot/config.txt and adding the following:
[cm4]
enable_uart=1

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Issue History

Date Modified Username Field Change
2023-04-21 20:34 Dan Heath New Issue