10.04 serial console is not up automatically

lynnos@tong-ji.org · 06-20-2010, 10:48 PM

All,
I am trying to pxe boot ubuntu 10.04

grub config:

Code:

Code:

title Linux NFS 
dhcp
root (nd)
kernel /vmlinuz-2.6.34 console=ttyS0,9600 root=/dev/nfs nfsroot=192.168.1.1:/home/nfsroot ip=dhcp rw
initrd /initrd.img-2.6.34-pxenfs

ttyS0.conf in /etc/init

Code:

start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345] 

respawn
exec /sbin/getty -L ttyS0 9600 vt102

When it boot up,it doesn't show up login prompt from serial console ttyS0, and I login it via ssh,then run

Code:

start ttyS0

serial console is working

Why ttyS0.conf job isn't invoked automatically ? is there anything wrong with configuration?

Thanks for your help in advance

Lynn

Laurens73 · 06-24-2010, 12:12 PM

I don't know how to do that the official way, but if you want to have it working fast, to gain more time to do it right, just add the lines you normally type to the file /etc/rc.local

Code:

start ttyS0

lynnos@tong-ji.org · 06-25-2010, 01:32 AM

Quote:

Originally Posted by Laurens73

I don't know how to do that the official way, but if you want to have it working fast, to gain more time to do it right, just add the lines you normally type to the file /etc/rc.local

Code:

start ttyS0

Thanks for your reply.
These days I am doing more investigation.The issue is that runlevel is unknown,not N 2,that's why ttyS0 isn't executed
I still don't know the root cause

linus.newbert · 06-25-2010, 06:41 AM

AFAIK the kernel console redirection is not enabled by default so these messages shouldn't appear (in order to do so, a new kernel must be built from sources). For the other issue, have you tried installing the ttySX activation with update-rc.d?