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Adding serial terminals

Restoring non-functional terminals

A completely non-functional terminal displays no login prompt and does not respond to keyboard input. This situation is usually caused by hardware failure or configuration problems. To check a non-functioning terminal:

  1. Check the brightness control on the terminal.

  2. Check the power and communication connections at the terminal and computer.

  3. If applicable, enter set-up mode on the terminal and verify the terminal configuration settings. The settings should include 9600bps, 8 data bits, 1 stop bit, and no parity.

  4. Enable the port to which the terminal is connected. For example, to enable tty2a, use the following command:

    enable tty2a

  5. Verify that there is a getty process associated with the terminal port. For example, enter:

    ps -t tty2a

  6. Test the hardware communications by disabling the port and redirecting output to the non-functional terminal: for example, to test tty2a, use the following commands:

    disable /dev/tty2a
    echo hello > /dev/tty2a

If this fails to restore the non-functional terminal, check the terminal's documentation for troubleshooting suggestions.
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© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003