Hi,
similar to the issue reported in https://forum.armbian.com/topic/6566-le-potato-serial-getty-on-ttys0-starts-stops-restarts/ the /var/log/syslog file is being spammed with the following entries:
Jul 11 00:37:04 localhost systemd[1]: serial-getty@ttyS0.service: Service hold-off time over, scheduling restart.
Jul 11 00:37:04 localhost systemd[1]: Stopped Serial Getty on ttyS0.
Jul 11 00:37:04 localhost systemd[1]: Started Serial Getty on ttyS0.
Jul 11 00:37:14 localhost systemd[1]: serial-getty@ttyS0.service: Service hold-off time over, scheduling restart.
Jul 11 00:37:14 localhost systemd[1]: Stopped Serial Getty on ttyS0.
Jul 11 00:37:14 localhost systemd[1]: Started Serial Getty on ttyS0.
Jul 11 00:37:25 localhost systemd[1]: serial-getty@ttyS0.service: Service hold-off time over, scheduling restart.
Jul 11 00:37:25 localhost systemd[1]: Stopped Serial Getty on ttyS0.
Jul 11 00:37:25 localhost systemd[1]: Started Serial Getty on ttyS0.
The only working serial interface is probably "/dev/ttyMV0" which is being brought up at boot together with "/dev/ttyS0":
[ OK ] Found device /dev/ttyS0.
[ OK ] Found device /dev/ttyMV0.
I could observe this behaviour on the following ARMBIAN, kernel and U-Boot versions:
ARMBIAN 5.44 user-built Debian GNU/Linux 9 (stretch) 4.14.40-mvebu64, U-Boot 2017.03-armada-17.10.3-g06ad760-armbian (May 10 2018 - 16:45:48 +0200)
ARMBIAN 5.44 user-built Debian GNU/Linux 9 (stretch) 4.17.5-mvebu64, U-Boot 2017.03-armada-17.10.3-g06ad760-armbian (May 10 2018 - 16:45:48 +0200)
Can this be fixed in armbian? Should I open a bug in git?