Re: Serial console on /dev/ttyS0

[Olof Tångrot <olof.tangrot@omicron.se>]

Thanks for the answer.
I guess I must rebuild the initrd after my changes. How do I do this?

Ivan Shmakov skrev:
>>>>>> "OT" == Olof Tångrot <olof.tangrot@omicron.se> writes:
> 
>  OT> So I uncommented the following line in inittab (of the compressed
>  OT> squashfs file system):
> 
>  OT> #T0=:23:respawn:/sbin/getty -L ttyS0 9600 vt100
> 
>  OT> After boot that linte in inittab mysteriously becomes:
> 
>  OT> T0:23:respawn:/bin/login -f user </dev/tty >/dev/tty 2>&1
> 
> [...]
> 
>  OT> What mechanism rebuilds inittab?
> 
> 	It's the autologin mechanism that does.  And it seems that it
> 	assumes `tty[[:digit:]]*' as the device name, which is not the
> 	case for a serial console.
> 
> 	The following kernel command line options may be of use:
> 
> --cut: /usr/share/doc/live-initramfs/parameters.txt --
> live noautologin
> live noxautologin
> --cut: /usr/share/doc/live-initramfs/parameters.txt --
> 
> 	OTOH, if autologin is desired, then you may wish to look at:
> 
> $ cat < /usr/share/initramfs-tools/scripts/live-bottom/25configure_init 
> ...
>         if [ -f /root/etc/inittab ]; then
>             sed -i -e "s|^\([^:]*:[^:]*:[^:]*\):.*getty.*\<\(tty[0-9]*\).*$|\1:/bin/login -f $USERNAME </dev/\2 >/dev/\2 2>\&1|" /root/etc/inittab
>        fi
> ...
> $ 
> 
> 	There, the regular expression should obviously read
> 	...tty[A-Z]*[0-9]\+..., not ...tty[0-9]*...
> 
> 	(And what's about USB to RS-232 converters, would those be
> 	usb/ttyUSB0 or something like that, BTW?)
> 
>  OT> How can I make a proper change to the compressed filesystem that
>  OT> works as intended?
> 
> [...]
>