<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Tue, Nov 7, 2017 at 5:48 PM, Yann Le Mouel <<a href="mailto:yann@lemouel.ch" target="_blank">yann@lemouel.ch</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-GB" link="#0563C1" vlink="#954F72"><div class="m_-1668732439613245018WordSection1"> Nov 06 09:37:02 systemd[1]: <a href="mailto:serial-getty@ttyS1.service" target="_blank">serial-getty@ttyS1.service</a> holdoff time over, scheduling restart.Nov 06 09:37:02 systemd[1]: Started Serial Getty on ttyS1.Nov 06 09:37:02 systemd[1]: Starting Serial Getty on ttyS1...Nov 06 09:37:02 systemd[1]: <a href="mailto:getty@ttyS1.service" target="_blank">getty@ttyS1.service</a> has no holdoff time, scheduling restart.Nov 06 09:37:02 systemd[1]: Started Getty on ttyS1.Nov 06 09:37:02 systemd[1]: Starting Getty on ttyS1...Nov 06 09:37:02 systemd[1]: <a href="mailto:serial-getty@ttyS1.service" target="_blank">serial-getty@ttyS1.service</a> holdoff time over, scheduling restart.Nov 06 09:37:02 systemd[1]: start request repeated too quickly for <a href="mailto:serial-getty@ttyS1.service" target="_blank">serial-getty@ttyS1.service</a>Nov 06 09:37:02 systemd[1]: Failed to start Serial Getty on ttyS1.Nov 06 09:37:02 systemd[1]: Unit <a href="mailto:serial-getty@ttyS1.service" target="_blank">serial-getty@ttyS1.service</a> entered failed state.Nov 06 09:37:02 systemd[1]: <a href="mailto:serial-getty@ttyS1.service" target="_blank">serial-getty@ttyS1.service</a> failed. </div></div></blockquote><div> </div><div>You have two services (getty@ and serial-getty@) fighting over the tty device. Start by disabling the former.</div><div> </div><div>(Actually, since you're getting dmesg output to the serial console, you might even have a *third* service, console-getty, doing the same...)</div></div><div> </div>-- <div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr">Mantas Mikulėnas <<a href="mailto:grawity@gmail.com" target="_blank">grawity@gmail.com</a>></div></div> </div></div>