This tutorial will go over the steps to go through in order to set up a serial console on Ubuntu Linux.

Linux Serial Ports
Ubuntu Serial Port Monitor Cable Adapter
Ubuntu Serial Port Monitor

Unlike most other distros, Ubuntu uses upstart instead of sysvinit and as such, there is a few differences between most of the tutorial that you might find on the internet regarding how to set up a serial console.

The command above using grep shows port 22 only and sshd service is listening on that port Use the ss Command. Netstat is not install on Ubuntu by default the ss command is installed as a replacement for netstat. As with netstat, the ss command is use to display network information on Linux systems.

A Serial Console becomes handy when running a headless server (i.e no keyboard and screen) or if you cannot connect a a server because of a network issue.

Linux Serial Ports

Platform: Ubuntu Eclipse Juno SR1 Arduino IDE 1.0.1 Plugin version 1.2.5.5. Firstly, everything builds perfectly fine. I have no problems with the rest of the plugin at all. Except for where serial ports are involved. In the serial monitor I go to add a monitor and the droplist to select the serial port is empty and greyed out.
Is there any software as Serial Port Monitor ( Eltima ) in Ubuntu Thanks and regards Adv Reply. October 24th, 2008 #2. View Profile View Forum Posts.

In this tutorial, we will set up a serial console on the server, the machine we want an access to. Setting up a serial console client will be covered in another article.

1. Checking the serial devices

Ubuntu Serial Port Monitor Cable Adapter

In order to find which devices are available on a box, you can run:

From this output, we can guess that there is 1 serial interface (/dev/ttyS0). You might possibly have more than one interface on your machine, this tutorial considers that you are using device 1 (ttyS0), if you use the second device, you will need to change ttyS0 by ttyS1.

2. Setting up the serial console on the server

On the server, we are going to set up:

A serial console on ttyS0
Have kernel booting messages output to the serial console
Make Grub outputs to the serial console

2.1. The serial console

To set up a serial console, We need to create a new file called /etc/event.d/ttyS0 in order to spawn a getty on the serial device. getty will take care of prompting the user for a username and password.

Ubuntu Serial Port Monitor

Go and edit /etc/event.d/ttyS0 and add:

To authorize root (if you enabled root account on your machine) to log in through the serial console, you need to edit /etc/securetty and add:

2.2. Having grub outputting to ttyS0

grub can be configured to output on the serial console.Edit grub and add:

In the section before the different kernels. This will take care of having grub being displayed one the serial console so you can actually modify grub through the serial console or boot using another kernel.

If using ttyS1, then change it to –unit=1

Also, in order to get the booting messages outputted to the serial console, you can append to your kernel line the following:

So, finally, the kernel line will look like:

That’s it, upon next reboot, you will be able to connect directly to your box using a serial console!.