Continuing the discussion from Testing HailoRT on Slackware AArch64 Linux
~# hailortcli logs runtime
Mar 9 15:10:12 hailo10 authpriv.err getty[1032]: /dev/ttyS1: not a tty
Mar 9 15:10:22 hailo10 daemon.info init: Id “S1” respawning too fast: disabled for 5 minutes
getty is trying to open a serial console on /dev/ttyS1 inside the Hailo-10H device and failing because it’s not a real tty. Most likely a leftover debug/console configuration in the Yocto build that’s not applicable to the production hardware configuration.
Should have been commented out before shipping? getty keeps trying to open ttyS1, but fails because there’s no tty there. So it crashes, respawns, then hits the respawn limits, then is disabled for 5 minutes, then starts again. Rinse and repeat. 
# S1:2345:respawn:/sbin/getty -L ttyS1 115200 vt100 # comment out this line
Trivial one line fix for the Hailo firmware devs… specifically the embedded Linux (Yocto) image that’s flashed to the device. 