Every 10 seconds, service agetty-serial logs the following message in /var/log/errors.log.
"/dev/ttyAMA0: cannot open as standard input: No such file or directory"
Looks like something left over from ARM implementation.
Yes, ARM usually requires serial tty to be enabled. I think setting SPAWN="no" in /etc/s6/sv/agetty-serial/conf should do the trick
I should probably make that "no" by default.
That's OK. Simple fix. Can make it in next build.
Better idea, I'll rewrite the agetty scripts to check for the existence /dev/tty{whatever}.
Should be fixed now with the latest s6-scripts.