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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: 
serial-getty@ttyS0.service: Failed with result 'exit-code'
serial-getty@ttyS0.service: Scheduled restart job
The issue has been discussed publicly in the Debian kernel mailing list.

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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.

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Existing systems

If you already have a running Debian 13 system affected by this issue, you can silence the logging noise with the following commands: 
systemctl disable serial-getty@ttyS0.service
systemctl mask serial-getty@ttyS0.service

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Optional verification

You can verify the service status with: 
systemctl status serial-getty@ttyS0.service

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Additional information

Related Debian discussion: lists.debian.org/debian-kernel/2025/02/msg01161.html
Last modified on May 22, 2026