12. Advanced Configuration

When diagnosing issues with 2X ThinClientServer, 2X ThinClientOS, or actual Thin Clients, it is possible to set configuration options to override certain behaviour, allowing the Administrator to circumvent potential pitfalls.

These options are activated or deactivated by adding lines in the text file (creating it if necessary):

.../conf/options.conf

...located under the “htdocs” folder containing the Management Console installation. In a typical Windows scenario, the full path would be:

This is the list of settings available:

The default behaviour in terms of passing credentials via the Windows Terminal Server Login is as follows:

Username is passed in the format <user>@<domain> only if...

This option can be set to force the system to ALWAYS pass the username in <user>@<domain> format.

When using a multi-monitor support, it is possible to disable one of the outputs of a dual head card so as to use the only one output of the vga card and the output of the onboard video card

This inverts the ordering of the video cards on the motherboard to be initialized due to hardware or driver malfunctions.

The default value for RDP connections is version 5.x. Version 4 is used on legacy Windows NT Terminal Servers.

The default behaviour is to leave the NUMLOCK to be set by the BIOS of the PC. You can specify the state of the NUMLOCK for all your ThinClientOS installation by setting it to OFF or ON depending on your requirements.

When this option is set, it is possible to use the NUMLOCK as a toggle when switching between multiple “Full Screen” connections. The NUMLOCK will toggle wether pressing ALT+TAB will be used by the 2X Desktop or else by the Terminal Server.

This enables the HOTKEYS bundled with the Citrix ICA Client for Linux. These are not enabled by default.

This option forcefully preloads the NX application to the ThinClientOS

This option forcefully preloads the full screen RDP client to the ThinClientOS

This option forcefully preloads the Citrix ICA Clientto the ThinClientOS

This option forcefully preloads the 2X ApplicationServer client to the ThinClientOS

Set the codepage to be used by the ThinClientOS. This will be used accessing removable media with file names stored in foreign languages. The default value is 437

The default volume of the ThinClientOS volume mixer is set to maximum due to the low output of some sound cards. This can be set to a lower value depending on the requirements of the administrator. The values accepted range from 0-99.

This setting affects the amount of time the ThinClientOS will wait to blank the screen as an effort to reduce screen burn (screen saver). The amount quoted is in minutes. If you do not want to enable the built in screen saver, you can safely omit the option.

When client shadowing is enabled, a prompt is displayed on screen to notify the user that an administrator is going to switch on the shadowing service. This is required by law in most countries. If you want to disable the display of the prompt and enable shadowing anyway, set the option above. Note that it’s the responsibility of the Administrator to make sure that the users are notified separately about the shadowing service if need be.