TTY “Serial” Terminal over USB

serialterminalusb

I have a few servers in a rack that like to drop their network connection, requiring a restart and/or handheld intervention. I purchased a Linksys NSLU2 and installed Debian on it in order to create a serial terminal. However, with USB-Serial converters running in the $30 range I'd really like to use USB (I have plenty of USB cables).

Is there a way to get Ubuntu Server to listen for "serial" terminals on a USB port? I doubt I'll coax the BIOS into talking to me over USB, but can I at least convince Ubuntu to do it?

Best Answer

Tell mingetty or whatnot to connect to ttyUSB<n> in inittab.

Related Solutions

Linux – USB/Serial converter, data passes only one way

Have you tried all the different options in the screen man page that are around baud_rate ?

      <baud_rate>
             Usually  300,  1200, 9600 or 19200. This affects transmission
             as well as receive speed.

      cs8 or cs7
             Specify the transmission of eight (or seven) bits per byte.

      ixon or -ixon
             Enables (or disables) software  flow-control  (CTRL-S/CTRL-Q)
             for sending data.

      ixoff or -ixoff
             Enables  (or  disables)  software  flow-control for receiving
             data.

      istrip or -istrip
             Clear (or keep) the eight bit in each received byte.

Also, maybe the output of the following command run on the server might help?

sudo stty -a -F /dev/ttyS0

Linux USB/Serial port won’t create a tty device in /dev

<6>usb 2-1: new full speed USB device using sl811-hcd and address 4
<6>usb 2-1: configuration #1 chosen from 1 choice

The messages above only indicate you have the basic USB support loaded in your kernel.

I guess you don't have the usb-serial kernel module loaded. What does lsmod | grep serial return?

What distribution are you using? And is the kernel the one bundled with the distribution or have you compiled your own?

Best Answer

Related Solutions

Linux – USB/Serial converter, data passes only one way

Linux USB/Serial port won’t create a tty device in /dev

Related Topic