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Sometimes when you install the Axxon One Client, you can have problems with packages, specifically with incompatible versions of Mono mono packages. By default, version 6.8 is installed, but version 6.4 is required for Axxon One to work. To resolve the problem, do the following:

1. Completely remove Mono mono packages by running the commands:
   

   Code Block
   language bash
   sudo apt purge mono* libmono* sudo apt autoremove

   Install new Mono packages from the repository
2. Run the command again to remove all dependencies:
   

   Code Block
   language bash
   sudo apt-get install mono-complete -t stretch autoremove

After that, you can repeat the installation of the the Axxon One Client (see Installing the Axxon One Client in Linux OS).

Problem with displaying a dialog box or a drop-down list

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By default, the Nouveau driver can be installed in Linux OS. This driver does not guarantee stable operation when using NVIDIA graphics cards for decoding Axxon One detection tools (see Configuring detection toolsDetectors).

To resolve the problem, you need to install the current graphics card driver from the official NVIDIA website and run the command in the terminal:

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1. Change the package configuration using the command:
   

   Code Block
   sudo dpkg-reconfigure axxon-one-core

    

2. In the groups selection dialog box, set the checkbox next to the render group.

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