Hi, I have been faced with intermittent issues with regards to the dev-ttyS0.device timing out upon boot up That being said I have ensured that my kernel has CONFIG_FHANDLE=y (version 4.9) and I have the udev package installed But I am still seeing this issue popping form time to time. I have read online that this could be a symptom of there are race conditions happening on the systemd but I have no idea on how to debug this since I cannot get the dmesg and there is no kernel panic BR Hean Loong Internal Global Dial: 2 701 6773 Direct Line: +60 4 636 6773 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/systemd-devel/attachments/20180313/639f2467/attachment.html>