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PTZ Stops Functioning After Reboot on Linux

Symptoms:

Systems with Ubuntu 14.04 exhibit no analog PTZ control after rebooting. 

Customer may note that they find the ‘Profile / Protocol’ field on the Serial Ports page has changed or defaulted and PTZ works again after setting this back to the correct protocol. 

Issue is exhibited after system reboots but not after restarting only the server service.

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Problem:

ModemManager is taking control of the serial port before exacqVision Server.

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Solution:

1) If they are using the exacqVision USB DIO accessory, this requires install of the exacqVision USB DIO Setup Package found on the Software Downloads page under ‘Accessory Installers’. 

    Ensure they have installed version 1.2.3.99807 or higher installed. 

2) If they already have the above mentioned USB DIO version mentioned above installed or are not using a USB DIO device, perform the steps below:

A) Open Terminal.

B) You will need ‘root’ access. If a ‘root’ password has already been assigned, type:   su     Then press Enter. Enter the ‘root’ password when prompted. 

     If ‘root’ has not been configured yet, type:   sudo passwd root    Press Enter and type a password for the ‘root’ account’.

C) Once you are ‘root’ type: 

 echo “manual” > /etc/init/modemmanager.override     Press Enter. 

D) When rebooting this should resolve the issue.