Overview
Some Debian 13 installations repeatedly attempt to start a serial console (ttyS0) even on systems where no physical or virtual serial device exists.
This can result in continuous log noise similar to:
The issue has been discussed publicly in the Debian kernel mailing list.
EDIS Global handling
EDIS Global automatically disables the unnecessary serial getty service during fresh Debian 13 installations to avoid excessive logging and unnecessary service restarts.
Existing systems
If your Debian 13 system shows this repeated failure and you do not use a serial console on ttyS0, stop the service and prevent it from starting again:
Optional verification
You can verify the service status with:
The expected state is inactive and masked. If you later need this serial console, reverse the change with:
The browser VNC console is separate from the ttyS0 serial console. See the systemctl reference for the difference between stopping, disabling, and masking a service.
Related Debian discussion: lists.debian.org/debian-kernel/2025/02/msg01161.htmlLast modified on September 30, 2026
