Contribute  :  Calendar  :  Advanced Search  :  Site Statistics  :  Directory  :  Contact Us  :  Mailing List  :  Web Resources  :  Polls  :  My Downloads  :  Media Gallery  
    Highland Lakes Linux User Group Bringing GNU/Linux and F/OSS to the Highland Lakes    
advanced search  
Topics
Home
LUG News (10/0)
Meeting Minutes (7/0)
Linux News (22/0)
Linux Tips (28/0)
Book Reviews (5/0)
Distro Reviews (3/0)
Software Reviews (1/0)
User Functions
:

:

Don't have an account yet? Sign up as a New User
Lost your password?
Events
Site Events

Saturday 17-May
Who's Online
Guest Users: 1
Sponsors
Bubba's Geek
 Welcome to Highland Lakes Linux User Group
 Sunday, May 11 2008 @ 07:43 PM MDT

Howto enable Serial Console

    
Monday, December 03 2007 @ 08:45 PM MST
Contributed by: emperor
Views: 398
Linux TipsA serial port can be setup for use as a console quiet easily.

For example. for use as COM1 (ttyS0), 38400 baud, 8 bits, 1 stop, no parity:

1. To enable the GRUB menu, add the following to /boot/grub/menu.lst:

serial --unit=0 --speed=38400 --word=8 --parity=no --stop=1
terminal --timeout=10 serial console

2. To redirect the messages during the boot process, append the following kernel parameters:
"console=tty0 console=ttyS0,38400n8". For example:

title CentOS (2.6.18-53.1.4.el5) (hd0)
root (hd0,0)
kernel /vmlinuz-2.6.18-53.1.4.el5 ro root=/dev/md2 rhgb quiet console=tty0 console=ttyS0,38400n8
initrd /initrd-2.6.18-53.1.4.el5.img

Note: enabling the redirection of the kernel messages will disable the usplash screen on the video monitor.

3. To enable serial console login once the system is booted, add "agetty" to "/etc/inittab". For example:

# Run gettys in standard runlevels
co:2345:respawn:/sbin/agetty ttyS0 38400 vt102

Now reboot the computer and connect a laplink style serial cable between this computer and another "client" computer. Start a serial terminal program like "minicom" (set to 38400 baud) on the client and you should see some text asking you to press any key or maybe the GRUB menu once the timeout (10 seconds) has expired. Once the system has full booted, you can login to the machine using your own account or the root account.

Reference:
http://tldp.org/HOWTO/Remote-Serial-Console-HOWTO/index.html








 
What's Related

Story Options

Howto enable Serial Console | 0 comments | Create New Account
The following comments are owned by whomever posted them. This site is not responsible for what they say.
 Copyright © 2008 Highland Lakes Linux User Group
 All trademarks and copyrights on this page are owned by their respective owners.		 Powered By Geeklog 
Created this page in 0.19 seconds