Touchscreen Loses Calibration

Touchscreen Loses Calibration

Context


Acer or POS-X terminals connected to an ELO touchscreen that have OS image versions 4.2.0 - 4.2.2 and ELO driver version 1.1 or older.

Symptoms


  1. Touchscreen needs to be calibrated daily or weekly.
  2. Terminal beeps when the user touches the screen.

Diagnosis


  1. Log into the terminal via SSH.
  2. Check the OS image version:

# cat /etc/FC-release

  1. Check the version of the ELO driver that is installed:

# rpm -qi fullcount-terminal-elo

Resolution


  1. Log into the terminal via SSH.
  2. Download the package named fullcount-terminal-elo-1.2-0.x86-64.rpm:

# placeholder for commands to download

  1. Stop the service for the existing driver:

# service elo-usb stop || killall elousbd

  1. Uninstall the existing driver:

# rpm -e --nodeps fullcount-terminal-elo

  1. Install the new driver:

# rpm -ivh fullcount-terminal-elo-1.2-0.x86-64.rpm

  1. Restart the application:

# service xdm restart || killall xinit

  1. Calibrate the touchscreen.
  2. Ask the user to confirm that the touchscreen is working correctly.

 


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